Where does the line of rotation need to be to get a cone? Pupils respond to three questions involving rotating a right triangle about different lines. The scholars describe the solid created along with providing details about its...

Visit the Magic Treehouse and take your class on a trip through time with a reading of the children's book Mummies in the Morning. Using the story to spark an investigation into Egyptian culture, this literature unit engages...

This tutorial provides illustrations for regular 2-D shapes as well as a definition for polygons and for regular polygons.

[Free Registration/Login may be required to access all resource tools.] The video describes how to determine what shapes are used to create a given composite shape. The video is followed by practice problems.

[Free Registration/Login may be required to access all resource tools.] The video defines a composite figure and describes how to determine how many triangles are within the given composite shape. The video is followed by practice problems.

[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which shapes are similar by looking at the attributes of the given shapes. The video is followed by a series of practice...

[Free Registration/Login may be required to access all resource tools.] The video describes how to classify a real-world object as a circle, triangle, square or rectangle. The video is followed by additional practice problems.

In this task, students investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...