Bridges Blog Archive for Geometry

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.

The following videos feature MLC's Geoboard App, a free application available both online and through the AppStore. The first, an instructional movie, highlights the Geoboard tools and demonstrates how to create a variety of polygons.

Sharing a little math humor to wish you...

Happy Valentine's Day!

A free pdf of this quote is available here.

During Unit 4, fourth grade classes following the Bridges & CCSS Pacing Guide encounter a series of creative lessons in Supplement C3 Circles & Angles that provide a foundation for understanding angle measurement.

Know Your Quadrilaterals, a YouTube song/video by Dave Nelson, shows a variety of quadrilaterals as part of a family tree, different yet related. Shapes include: kite, trapezoid, parallelogram, square, rectangle, and rhombus. Bridges students may enjoy viewing this upbeat video during Unit 3 in Grades 3 and 5 and Unit 4 in Grade 4.

In The Polygon Movie, a third grade production, circle is rejected because she isn't a polygon. Throughout the movie students explore attributes of polygons using geometric vocabulary.

Sir Cumference and the Viking's Map, the seventh book in the series by Cindy Neuschwander, will intrigue adventurers in grades 3-5.