Bridges Blog Archive for Grade 3

If you're preparing to teach Bridges Grade 3, Unit 8 on bridges, you might want to view the 15 Longest Bridges in the World. (Due to advertising on the page, preview before sharing with your class.) Students will find it hard to believe that bridges can be over 100 miles long! Pose some questions:

Looking for ways to explore relationships between circumference, radius, diameter and area? Check out The Circle Tool from NCTM Illuminations. You’ll notice three buttons that run along the top of the game window: Intro, Investigation and Problems. With the Intro button selected, you’ll notice an icon of a video camera.

MLC's Number Rack App provides a tech alternative to traditional models such as ten-strips and ten-frames. Let's consider a couple examples.

In the 3rd Grade Bridges Game, "Twenty or Bust", students use ten-strips to add 3 or more numbers as shown:

An assortment of new and updated Bridges Supplements are available to support grades 3-5. The free pdfs include:

Bridges Supplements - Grade 3

A5 Fractions - Updated
D7 Masses & Volumes - New
E3 Line Plots - New

Don't miss the series of math videos produced by the folks at Math Antics. They write,

Looking for some free, fun ways to approach fractions? Here are some new activities for Bridges grade 3 users...or anyone looking for ideas to spice up fractions!

For your amusement...Abbot and Costello compute 28 divided by 7. Consider asking students to analyze what happened. What's wrong with the strategies?