# Bridges Units Resource & Tech Links – Grade 2

The following resources extend beyond the current Bridges program and complement specific Bridges Units. These resources may be used to provide students additional challenge or support or teachers may decide to share some of them with families so students can review content at home.

Sessions on the matrix include reference to the CCSS Supplement Sets listed in the order recommended by the CCSS Pacing Guide.

Go to: Unit 2, Unit 3, Unit 4, Unit 5, Unit 6, Unit 7, (Go to Number Corner)

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Unit 1 – Sorting, Patterning & Number (*Patterns, Functions & Algebraic Thinking*)

Link |
Session |
Type |
Math Topic |
Notes |

Work Place Gradual Entry - suggested gradual entry schedule for teachers interested in introducing Work Places one at a time. | Any, as needed | Print Resource | Work Places | |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | Available for Units 1-7 and Supplements A1, Activity 2, and A5, Activity 2. | |

Investigating Growing Patterns - Mathwire contains a wide array of growing pattern explorations. | 6-16, 22 | Activity | Growing Patterns | Also goes with Work Place 3A. Mathwire is an excellent source of standards-based math activities that could be used as extensions. |

Pattern Bugs - insects illustrate simple patterns. Rhyming text demonstrates the same pattern. For example, the bee page shows an AAAB pattern through text, “Buzz-buzz-buzz-sip,” the colors of the striped bees--yellow, yellow, yellow, black--and the colored border--orange, orange, orange, yellow. | 6-16, 22 | Book | Patterns | Also see Pattern Fish by the same author. |

Moon Rock Patterns - recognize and complete patterns of colored dots. | 6-16, 22 | Game | Patterns | Contains increasingly difficult levels of repeating patterns. |

Cyber Pattern Player - click on squares to make a pattern, then hear the pattern played. | 6-16, 22 | Activity | Patterns | Musical way of looking at patterns. |

Coin Box - variety of activities to count, collect, exchange, and make change for coins. Option to use visuals similar to money value pieces. From NCTM. | 7, Work Place 2B | Activity | Money | Could be used in a whole group lesson. If students work independently, they'll need teacher support to get started. |

Coin Combo - click on coins to equal total money value shown. Coins continually fall in columns; when a column fills, game is over. | 7, Work Place 2B | Game | Money | Levels increase in difficulty, starting with nickels & dimes and small money values and increasing to larger coins and money amounts. Fun. |

Coins for Candy - money tutorial. Students must identify coins, know their value, and compare values for pennies, nickles, and dimes. At the end, they find the correct coin to pay for candy. | 7, Work Place 2B | Activity | Money | Lesson relies on reading. Audio is available for non-readers and beginning readers. Activity is for students who need review in recognizing coins and their worth. |

Whack a Mole - click on the mole that shows each subsequent number in a counting pattern. | 17 | Game | Number Patterns | Game can be set for any start number and any counting-by sequence. After An Hour or Bust! students could continue exploration of 5's counting. |

Saucer Sorter - teaching tool. Students close eyes as teacher covers a number on a number line or moves numbers around. Students then figure out the missing number or sort numbers. Can be used on IWB. | 17 | Activity | Number Patterns | Designed for whole group instruction. Choose the start number and the count-by sequence. Help video. In Session 17, use it to explore 5's counting pattern. |

Quilt Books - optional books to read during Session 19, emphasizing quilting and community. | 19 | Book | Quilts - Patterns Geometry | Consider Sam Johnson and the Blue Ribbon Quilt or The Patchwork Quilt. |

Factorize - NCTM activity visually explores factors through rectangular arrays. | 20 | Activity | Factors - Rectangular Arrays | In Session 20, explore the possible arrays for the class quilt blocks. After a tile exploration, this could be used as a whole group activity. |

Prep Charts for Measurement Supplements - preparation list for Supplement Set D2 on measurement. | Supplement D2 | Print Resource | Measurement | Contribution by a Bridges teacher. |

Singing with the Inchworm - Bridges teacher adds popular song to Supplement D2. |
Supplement D2 | Activity | Measurement | Contribution by a Bridges teacher. |

How Big is a Foot? - the King wants to give the Queen something special for her birthday. How can they figure out how big to make her new bed? | Supplement D2 | Book | Measurement | Optional read aloud for Supplement D2: Activity 1. |

Jim and the Beanstalk - in this sequel to the traditional story, Jim must measure the Giant for new glasses, false teeth, and a wig. | Supplement D2 | Book | Measurement | Optional read aloud for Supplement D2: Activity 3. |

Inch by Inch - the inchworm proudly measures until a bird threatens to eat him if he cannot measure his song. Caldecott Honor Book. | Supplement D2 | Book | Measurement | Makes a nice read aloud for Supplement D2: Activity 4. |

Twelve Snails to One Lizard - a bullfrog helps a beaver build a dam by explaining the concepts of inches, feet, and yards. | Supplement D2 | Book | Measurement | Optional read aloud for Supplement D2: Activity 7. |

Is a Blue Whale the Biggest Thing There Is? - illustrates the concept of big, bigger, and biggest by comparing the physical measurements of such large things as a blue whale, a mountain, a star, and the universe. | Supplement D2 | Book | Measurement | Optional read aloud for Supplement D2: Activity 8. |

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Unit 2 – Hungry Ants (*Problem Solving, Communication & Connections*)

Link |
Session |
Type |
Math Topic |
Notes |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | ||

The Ants Go Marching - lyrics to ten verses of "The Ants Go Marching" song with piano accompaniment. | Any | Music | Subject Integration - Ants | |

Ant Books - visit the Virtual Bookshelf for book titles on the theme of ants. | All | Book | Subject Integration - Ants | |

Pest World For Kids - website includes facts about ants commonly found in the United States. | All | Activity | Subject Integration - Ants | |

Peep Into the Ant Kingdom - series of web pages describe life of ants. Includes photos. | All | Activity | Subject Integration - Ants | |

AntWeb in Google Earth - instructions on how to put all of AntWeb's ants on the globe. Also see AntWeb for additional ant images. | All | Activity | Subject Integration - Ants | "You can open subfamilies, genus... all the way to the specimen level. When you're zoomed out, you just get pins where there are ants." |

The Hidden Life of Ants Photo Gallery - many ant photos from the Smithsonian National Museum of Natural History. | All | Activity | Subject Integration - Ants | Photo categories include: food, warriors, shelter, communication. |

Army Ants - photos and information about Army Ants. Also see photos and info on Harvester Ants. |
4 | Activity | Subject Integration - Ants | "Harvester Ants in Space," tells about passengers on a NASA space shuttle. |

Supplemental Activities Become Work Places - written directions to make several activities from Set A4 into Work Places. | Supplement A4 | Print Resource | Contribution by a Bridges teacher. | |

Sir Cumference and All the King's Tens - Sir Cumference & Lady Di need to figure out a quick way to count the guests coming to their party. They find the simplest way is to group them into tens, hundreds, and thousands. | Supplement A4 | Book | Place Value | Another great book in the Sir Cumference series by Cindy Neuschwander. |

Shark Numbers - given three numbers, look at the base ten pieces and click on the bubble that shows that number. Shark bites the boat if incorrect. | Supplement A4 | Game | Place Value | |

Shark Pool Place Value - look at the base ten pieces and click on the bubble that shows that number. In this game there are many numbers to choose from. | Supplement A4 | Game | Place Value | |

Partitioning Numbers - view a visual model of tens and units and click on the number represented. | Supplement A4 | Activity | Place Value | Fairly simple activity with only 2 places represented. |

Base Ten - represent a given number using base ten blocks. The program keeps track of the number of blocks as they are added and shows the progression on a numberline. | Supplement A4 | Activity | Place Value | Drum beat included; may wish to mute sound. |

Great Estimations - colorful photos depict strategies for estimating a variety of objects. Also see the book Greater Estimations for more strategies. | Supplement A4 | Book | Estimation | |

Estimatron - estimate groups of objects. | Supplement A4 | Activity | Estimation |
From Bruce Goldstone, author of Great Estimations. |

Number Eating Alligator Song - song explores greater than/less than. | Supplement A4 | Song |
Greater Than/ |
Ron Brown song. Suggested by a Bridges teacher. |

Compare Numbers - compare numbers and place the correct sign between them. | Supplement A4 | Game |
Greater Than/ Less Than |
Three levels: numbers to 100, 1,000, 10,000. |

Comparing Number Values - compare numbers with <, >, = signs. | Supplement A4 | Game |
Greater Than/ Less Than |
Three levels of play. |

Raceway Number Values - compare numbers with <, >, = signs. | Supplement A4 | Game |
Greater Than/ Less Than |
Two levels of play. |

Place Value Calculator - teaching tool for whole group instruction. Shows a target number to make in expanded form. | Supplement A4 | Activity | Place Value - Expanded Form | From this link go to "Teachers Toolkit" and then to "Place Value Calculator." |

Prep Charts for Measurement Supplements - preparation list for Supplement Set D3 on measurement. | Supplement D3 | Print Resource | Contribution by a Bridges teacher. | |

Measuring in Meters Worksheet - teacher created worksheet for use with Set D3, Activity 3, "100 Army Ants & More." | Supplement D3 | Print Resource | Estimate & Measure Meters | Contribution by a Bridges teacher. |

Millions to Measure - wizard explores the invention of length, weight, and volume, then introduces the world of metrics. Steven Kellogg's illustrations. | Supplement D3 | Book | Measurement - Metric Length | |

How Long or How Wide? - humorous rhyming text explains metric and U.S. Customary length. | Supplement D3 | Book | Measurement - Metric Length | Quick read. |

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Unit 3 – Addition, Subtraction & Probability (*Basic Facts*)

Link |
Session |
Type |
Math Topic |
Notes |

XtraMath - free, web-based, math fact fluency program. | Any - as needed | Program | Fact Fluency | Program includes addition, subtraction, multiplication, and division. Student accounts can be accessed from computers at home or school. Progress reports available. |

Math Magician - practice facts. Select from addition, subtraction, multiplication & division. Timed. | All | Activity | Fact Fluency | Specify exact facts to practice. Example: practice +3 addition facts, 20 questions in 1 minute. Nice layout. |

Addition & Subtraction Fact Strategy Posters - 8 1/2″ x 11″ posters (pdf) that describe and illustrate strategies such as doubles, neighbors, fast 9’s, take-away 10’s. | All | Print Resource | Addition & Subtraction | Contribution by a Bridges teacher. |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | Includes files for Supplement A1, Activity 2. | |

Falling Sums - A beat-the-clock game in which the player has to decide whether an addition or subtraction combination will be less than or greater than 10. | All | Game | Addition & Subtraction | Background information. In a more challenging version, the player decides whether an addition or subtraction combination will be less than or greater than 100. This game is great for developing number sense and estimation skills. |

Arithmetic Four - two player game in which students place pieces on the board by answering math problems. | All | Game | Addition & Subtraction | Choose from addition, subtraction, multiplication, division. Like connect 4. |

Number Fact Bingo - choose from 6 bingo games. Print the bingo game cards and use online machine to select the numbers. | All | Game | Addition & Subtraction | Combines desktop and online resources. Choose from a variety of math strands. |

How Many Under the Shell - Okta hides bubbles under a shell, then adds or subtracts some. Students determine how many are left. NCTM. | All | Game | Addition & Subtraction | Students will need teacher support as they learn to play. |

Number Jump - move a ball along a number line to smash flies. Uses - and +. | All, Supplement A1 | Game | Addition | |

Sums Stacker - drag values from stack to stack until the sum of each stack equals the target number. | All | Game | Addition | Choose from values shown in: dice, numbers, money. Try to make as few moves as possible. Choose from solve or race modes. |

Addition with Manipulatives - see and hear an addition problem. Answer the problem. Drag marbles onto a work surface to help with counting, as needed. | All | Game | Addition | Five levels of addition, starting with simple 1 digit problems. Players must score 70% or greater to advance levels. Audio directions. Site contains ads. |

Connect Sums - Click on values that add up to target sum. Clicked items must be next to each other. | All | Game | Addition | Values can be shown as dice, numbers, or money. |

Deep Sea Duel - play against an octupus to be the first to collect cards that add up to a specified sum. NCTM. | All | Game | Addition | Choose how many cards, types of numbers, and level of strategy. |

Jet Ski Addition - move jet ski along by solving addition problems. Choose the correct answer from 3 given choices. | All | Game | Addition | Play against other online players or the computer. |

Speed Grid Addition - select two numbers from a grid that equal the given sum. Timed. | All | Game | Addition | More advanced levels: Speed Grid Addition 2 and Speed Grid Addition 3. |

Sum Sense Addition - drag & drop number cards to make an addition number sentence. | All | Game | Addition | |

Techno Tortoise - add 2 numbers by moving a turtle along a number line using -1, +1, +5, or +10. | All, Supplement A1 | Game | Addition | Nice way to show addition strategies on a number line. Most problems are multi-digit. Site includes a demonstrator tool that could be used by teachers for whole group instruction. In the game mode, 5 correct answers results in a quick non-math, video-like activity. |

Catapult Count On - use a catapult to hit a castle by adding a single digit to a double digit to jump to the next multiple of ten on a number line. | All, Supplement A1 | Game | Addition | Pull down on catapult to adjust a number added on the number line. Check "hide jumps" to use mental math. See help video for demo. |

Speed Grid Subtraction - select two numbers from a grid that equal the given difference. Timed. | All | Game | Subtraction | More advanced levels: Speed Grid Subtraction 2 and Speed Grid Subtraction 3. |

Balloon Pop Subtraction - given a subtraction problem, pop balloons to figure out the solution. | All | Game | Subtraction | 3 levels of difficulty. Audio directions. Site contains ads. |

Subtraction Blast The player can subtract either 2 or 3 from a number as many times as desired . The goal is to get each number to 0 as quickly as possible. | All | Game | Subtraction | Talk with students about how they can get numbers to 0 quickly. (For example, you can get 10 to 0 by subtracting 2 five times, or you can subtract 2 twice and 3 twice.) Site contains ads. Press M to mute sound. |

Fact Strategies Button Chart - model of what one teacher did with an addition chart. | 2 | Activity | Addition Fact Strategies | Although the example is from a first grade classroom, similar ideas could be used at the second grade level. Teacher contribution. |

Math Lines - The player races to pair numbers that add up to 10. Before students play, review the pairs of numbers that add up to 10. | 7, All | Game | Addition | Site contains advertising. Fun game. Goes with Work Place 4B if students wish to make 10. Or select this version of Math Lines and choose your own target number. |

Bonds of Ten - Set a whale free by adding pipe sections with numbers to make ten. | 7, All | Game | Addition | Could be a "make 10" extension for Work Place 4B. |

Catch Ten - help a bear catch the base ten blocks that add up to ten. | 7, All | Game | Addition | |

Make the Sum - demonstration video features the game from Session 7. | 7, All | Video | Addition | Students combine cards to make a target sum. Also goes with Work Place 4B. Related blog article. |

The Josephina Story Quilt - Pa says there's no room to bring the pet chicken on the trip West. The subsequent adventures are recorded on a quilt sewn to tell of the journey. | 9 | Book | Quilts - Geometry | Optional read aloud for Session 9. |

Pattern Blocks - use virtual pattern blocks for additional exploration of symmetry, balance, and pattern. | 9-11 | Activity | Quilts - Geometry | |

Even Steven and Odd Todd - Cousin Odd Todd arrives to visit Even Steven who likes everything to come in even numbers. | 12, 13 | Book | Even & Odd Numbers | |

Dinosaur Dentist - use knowledge of doubles and neighbors to remove the dinosaur's bad tooth. | 12, 13, 20, 21, All | Game | Addition - Doubles & Neighbors | |

Robin Hood Archery Doubles - see a number, then click the double on the archery board. Up to 10+10. | 12, 13, 20, 21, All | Game | Addition - Doubles | Correct answer results in loud trumpet playing. Consider muting. Try Robin Hood Doubles Beyond 10 for doubles greater than 10+10. |

Bridge Doubles - simple game in which player doubles a number to complete a bridge, allowing a car to drive over. | 12, 13, 20, 21, All | Game | Addition - Doubles | Takes player straight through doubling numbers 1-10, then starts again with 1. |

Ann & Addem's Dartboard Game - hit the ring just outside the number on the dartboard that must be doubled to equal the target number. | 12, 13, 20, 21, All | Game | Addition - Doubles | In order to grab the dart the player must click precisely on the dart tip. |

Sum Sense Subtraction - drag & drop number cards to make a subtraction number sentence. | 14, All | Game | Subtraction | Extension for Session 14, learning to record differences as subtraction sentences. |

Supplemental Activities Become Work Places - written directions to make Set A1, Activity 1 into a Work Place. | Supplement A1, Activity 1 | Print Resource | Addition & Subtraction | Contribution by a Bridges teacher. |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Supplement A1, Activity 2 | Smart Board Files | Addition & Subtraction | Notebook file contributed by a Bridges teacher supports Number Line Showdown. |

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Unit 4 – Exploring Shapes, Symmetry, Area & Number (*Geometry)*

Link |
Session |
Type |
Math Topic |
Notes |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | ||

Mummy Math - two children use their knowledge of geometric solids to locate a burial chamber in an Egyptian pyramid. | 2-4, Work Place 6A | Book | Geometry - 3D Figures | Covers faces, edges, vertices (corners.) |

Captain Invincible and the Space Shapes - while piloting his spaceship, Captain Invincible encounters three-dimensional shapes, including cubes, cylinders and pyramids. | 2-4, Work Place 6A | Book | Geometry - 3D Figures | |

3D Shifting Shapes - a 3D shape is hidden. Use a tiny window to peer at parts of the shape. Can you guess the shape? | 2-4, Work Place 6A | Activity | Geometry - 3D Figures | Includes this vocabulary: cube, cuboid, prism, triangle or square based pyramid, cone, sphere, cylinder. Substitute terms used in Bridges while looking at the shapes. |

Geometric Solids - manipulate & color 3D shapes to explore faces, edges, vertices. From NCTM. | 2-4, Work Place 6A | Activity | Geometry - 3D Figures | Use as a teaching tool for demonstration purposes. |

3D Shapes Rap! - rap includes four shapes--sphere, cylinder, cube and cone--with many, many "real world" examples pictured. | 2-4, Work Place 6A | Video | Geometry - 3D Figures | Catchy review of 3D shape names. Blog entry includes song for 2D Shapes. |

Shape Lab - help cartoon scientist finish his project by handing him the shapes with the right characteristics. | 2-9 | Game | Geometry, Fractions | 3 levels of play. Includes basic fractions and side #s of a figure in lowest levels and lines of symmetry at highest level. |

Triangle Sort - sort triangles into Venn diagrams. | 6-WorkPlace 6F, 18 | Activity | Triangles | Activity begins with a tutorial on scalene, isosceles, and equilateral triangles. For more challenge try "Shapes" at the bottom of the index page. |

Tessellations - choose a shape and color and watch it tessellate automatically. | 10-11 | Activity | Tessellations | PBS parent site. |

Tessellate! - tessellate a triangle, rectangle or hexagon. | 10-11 | Activity | Tessellations | More complex activity that may need teacher guidance. Provides a challenge for those wanting to further explore tessellations. |

Thirteen Ways of Looking at a Half - find thirteen different ways to show one half by clicking on triangles in a big square. Cyberchase activity. | 11 | Game | Fractions - Half | Natural extension to Lesson 11. |

Shape Facts - explores lines of symmetry in a variety of shapes. | 12, 13 | Activity | Symmetry | Watch the pieces virtually fold. |

Quilt Books - browse book titles with quilt themes. | 11-14 | Books | Quilts - Geometry | |

Shifting Shapes - a simple 2D shape is hidden on the screen. Use a small window to look at parts of the shape. Can you guess what it is? Try Shifting Shapes Year 1 for additional shapes: hexagon, octagon. | 19-20 | Activity |
Geometry - 2D Figures |
Shapes are simple: triangle, square, rectangle, circle. Interesting activity. Eye icon shows you the shape. The star and circle icons are windows. Using blue arrows to make your windows bigger or smaller. Challenge kids by using small windows. |

Concentration - click on 2 windows at a time. Match geometric shape (visual) to its name. | 19-20 | Game |
Geometry - 2D Figures |
Set to shape mode. 1-2 players. 2 levels of play. Free app also available. |

Teaching Shapes Using Read-Alouds, Visualization, and Sketch to Stretch - students listen to snow books as a starting point to learn about shapes. | 22-25 | Activity |
Geometry - 2D Figures |
Lesson from ReadWriteThink. Goes with the snow people lessons. |

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Unit 5 – Branching Into Larger Numbers (*Money & Place Value*)

Link |
Session |
Type |
Math Topic |
Notes |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | Also includes files for Supplement A5, Activity 2. | |

Shark Numbers - given three numbers, look at the base ten pieces and click on the bubble that shows that number. Shark bites the boat if incorrect. | All | Game | Place Value | Options for numbers up to 29, 59, 99, 999. |

Shark Pool Place Value - look at the base ten pieces and click on the bubble that shows that number. In this game there are many numbers to choose from. | All | Game | Place Value | |

Partitioning Numbers - view a visual model of tens and units and click on the number represented. | All | Activity | Place Value | |

Higher & Lower - put 5 cards in order and check your answer. | All | Activity | Place Value | First click on cards to reveal values. Then click "order" to receive sorting framework. Then "check" answer. Choose from categories of numbers to 10, 20, 100, 1000. Includes many other modes, including time. |

Estimate - estimate a whole number on a number line. This valuable teaching tool could be used as a class opener. | All | Activity | Estimation | Session 22 and 23/Work Place 9B especially focus on estimation. |

Glowla's Estimation Contraption - round numbers to estimate faster in this Cyberchase activity. | All | Game | Estimation - Rounding | |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Supplement Set A5, Activity 2 | Smart Board Files | Multi-Digit Addition & Subtraction | Notebook file contributed by a Bridges teacher supports Jump-a-Ten. |

Coin Box - variety of activities to count, collect, exchange, and make change for coins. Option to use visuals similar to money value pieces that will be used in Bridges grade 3. From NCTM. | 12, 14, 26, 27, 28 | Activity | Money | Also goes with Work Place 8A, 8E, 9A, 9E. |

Money Flashcards - add amount shown (in coins & dollars) and enter total. Keeps track of # correct and # attempted. | 12, 14, 26, 27, 28 | Activity | Money | No end to game. Could be used in whole class review. |

Learn to Count Money - count money by clicking & dragging coins & bills into box. | 12, 14, 26, 27, 28 | Activity | Money | Becomes progressively more difficult as students master levels. Level 1, count to 99 cents. Level 2, count to $10. Level 3, count to $100. Also choose from beginner level (using any combination of coins) and expert levels (using least number of bills & coins.) |

Cash Out - sell as many items as possible before time runs out. Make change for each customer by clicking on correct coins. | 12, 14, 26, 27, 28 | Activity | Money | Choose from levels of difficulty. |

Sums Stacker - drag coins from stack to stack until the sum of each stack equals the target number. | 12, 14, 26, 27, 28 | Game | Money | Choose money mode. Try to make as few moves as possible. Choose from solve or race modes. Also goes with Work Place 8A, 8E, 9A, 9E. |

Connect Sums - Click on values that add up to target sum. Clicked items must be next to each other. | 12, 14, 26, 27, 28 | Game | Money | Select the money mode. Also goes with Work Place 8A, 8E, 9A, 9E. |

Coin Combo - click on coins to equal total money value shown. Coins continually fall in columns; when a column fills, game is over. | 12, 14, 26, 27, 28 | Game | Money | Levels increase in difficulty, starting with nickels & dimes and small money values and increasing to larger coins and money amounts. Fun. Also goes with Work Place 8A, 8E, 9A, 9E. |

Number Sense - Cyberchase place value game in which player must create a 3-digit number bigger than Hacker's. | 16, All | Game | Place Value | |

More M & M's Math - estimate a handful of candy, sort, graph, add, then find the difference from the original estimation. | 18-20 | Book | Estimation | Optional read aloud provides a preview of some of the activities in Sessions 18-20. Currently out-of-print, but available in many libraries. |

Bugs in the System - capture bugs and make a bar graph to count totals. | 19 | Game | Data Analysis | As bugs are captured, the "bar graph scaler" must be adjusted. Players then must analyze bar graphs that are set to different scales. |

Techno Tortoise - add 2 numbers by moving a turtle along a number line using -1, +1, +5, or +10. | 21-26, Supplement A5 & A9 | Game | Multi-Digit Addition | Nice way to show addition strategies on a number line. Site includes a demonstrator tool that could be used by teachers for whole group instruction. In the game mode, 5 correct answers results in a quick non-math, video-like activity. |

Adding 2-Digit Numbers - teaching tool to model adding tens digit and unit digit separately. TESiboard. | 21-26, Supplement A5 & A9 | Activity | Multi-Digit Addition | Slide each number into parts. Then slide the ones together and the tens together. So 32+45 becomes 30+40 (slide together to make 70) and 2+5. |

Number Pyramid - help Molly through the pyramid doors by completing addition and subtraction number sentences with the correct number or symbol. | 21-26, Supplement A5 & A9 | Game | Addition & Subtraction | "Really hard" level uses 3 digit addition and subtraction. |

Grouping & Grazing - count, add, & subtract to move cows into corrals. Corral in groups of 5 or 10. NCTM. | 21-26, Supplement A5 & A9 | Game | Addition & Subtraction | Students need instructional support to get started. |

Count On Convict - stop prisoners from escaping by doing subtraction on a number line. | 24-25, Supplement A9 | Game | Multi-Digit Subtraction | Players must type in each jump on the number line and then add the jumps together to find the difference. Students will need teacher support to get started. |

Send in the Trolls - find the troll with the middle height to represent the Cyberchase Beauty Contest. | 30-32 | Activity | Averaging | Work through 3 levels with increasing numbers of trolls. |

Supplemental Activities Become Work Places - written directions to make 2 activities from A5 into Work Places. | Supplement A5 | Print Resource | Contribution by a Bridges teacher. | |

Telling Time: How to Tell Time on Digital and Analog Clocks - humorous text explains the concept of time, from seconds to hours on both analog and digital clocks, from years to millennia on the calendar. | Supplement A5, Activity 1 | Book | Time | Optional read aloud for Supplement A5: Activity 1. |

100 Hunt + 10 - while looking at a 100 grid, click on the number that is 10 more than the target number. | Supplement A5, A9 | Activity | Add 10 | Natural extension to Supplement A5, Activity 2. |

Add 10 Sub Challenge - two player game in which a player must add 10 to a given number. First player to correctly complete 5 problems wins. | Supplement A5, A9 | Game | Add 10 | Players shoot at submarines. |

Octopus - click on the shell that shows 10 more than the given number. | Supplement A5, A9 | Game | Add 10 | |

Adding 10 Depth Charger - add 10 to the sonar scanner to destroy robot submarines. | Supplement A5, A9 | Game | Add 10 | Displays base ten pieces with tens and units on the "sonar screen." |

Catapult Count On - use a catapult to hit a castle by adding a single digit to a double digit to jump to the next multiple of ten on a number line. | Supplement A9, Activity 3 | Game | Addition | Pull down on catapult to adjust a number added on the number line. Check "hide jumps" to use mental math. See help video for demo. |

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Unit 6 – Get Those Marbles Rolling (*Connecting Math & Science*)

Link |
Session |
Type |
Math Topic |
Notes |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | ||

Creative Building - visit the Virtual Bookshelf for titles that emphasize creative building in childhood. | Any | Book | Optional read alouds to use throughout this unit. Several books emphasize perseverance in building. | |

Create a Graph - choose a type of graph to design. | 10 | Activity | Graphing | Consider use as a teaching tool for whole group instruction. Students could create line plots (Standard: CCSS MD.9) for ramp height/distance. |

Cereal Toy Investigation - in this Mathwire lesson, students collect and analyse data in a simple dice roll experiment. | Any, after 10 | Activity | Graphing | This extension provides additional experience with line plots (Standard: CCSS MD.9). |

Line Plots with Names - NCTM lesson in which students count the number of letters in their first names and make line plots of the data. | Any, after 10 | Activity | Graphing | This extension provides additional experience with line plots (Standard: CCSS MD.9). |

Line Plots with Raisins - students count raisins in mini boxes and make line plots of the data. | Any, after 10 | Activity | Graphing | This extension provides additional experience with line plots (Standard: CCSS MD.9). |

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Unit 7 – Games, Graphs & Toys (*Statistics, Probability & Computation*)

Link |
Session |
Type |
Math Topic |
Notes |

Smart Board Files - electronic white board display files contributed by Bridges teachers. | Any, as needed | Smart Board Files | ||

Bugs in the System - capture bugs and make a bar graph to count totals. | All | Game | Data Analysis | As bugs are captured, the "bar graph scaler" must be adjusted. Players then must analyze bar graphs that are set to different scales. |

Factorize - create rectangular arrays and explore their factors. NCTM. | 3 | Activity | Factors | Teaching tool for exploring rectangular arrays. Works with numbers from 2-50. Could also serve as an extension for students; by choosing "automatic number" mode they must find all factors of that number. |

Eating Fractions - simple look at halves, thirds, and quarters with photos of food. | 5 | Book | Fractions | Look for this out-of-print book in your library. |

Telling Time: How to Tell Time on Digital and Analog Clocks - humorous text explains the concept of time, from seconds to hours on both analog and digital clocks, from years to millennia on the calendar. | Supplement D5 | Book | Time | Optional read aloud for Supplement D5: Activity 1. |

Pigs Will Be Pigs - the pigs go on a money hunt so they can go out to eat. | Supplement A6 | Book | Money | Optional read aloud for Supplement A6: Activity 1. For additional money activities, see Unit 5 resources. |

Sir Cumference and All the King's Tens - Sir Cumference & Lady Di need to figure out a quick way to count the guests coming to their party. They find the simplest way is to group them into tens, hundreds, and thousands. | Supplement A4 | Book | Place Value | For additional activities for Supplement A4, see Unit 2 resources. |

Techno Tortoise - add 2 numbers by moving a turtle along a number line using -1, +1, +5, or +10. | Supplement A9 | Game | Multi-Digit Addition & Subtraction | For additional activities for Supplement A9 and Multi-Digit Addition/Subtraction, see Unit 5 resources. |

Supplemental Activities Become Work Places - written directions to make Set A7, Activity 2 into a Work Place. | Supplement A7 | Print Resource | Contribution from a Bridges teacher. |