National Council of Teachers of Mathematics
Nctm: Illuminations: Geometric Solids
This tool allows you to manipulate various geometric solids and investigate their properties.
National Council of Teachers of Mathematics
The Math Forum: Defining Geometric Figures
This site provides an in-depth definition of a two-dimensional figure and a three-dimensional figure. Related terms include arcs, vertices, polygon, and many more.
Alabama Learning Exchange
Alex: Geometric Man
The students will explore angles, rays, line segments, perpendicular lines, parallel lines, and two-dimensional figures through the use of the book Shape Up! Fun With Triangles and Other Polygons by David A. Adler. They will also...
Alabama Learning Exchange
Alex: What Can Shapes Be
This is a hands-on lesson plan that will help young scholars explore shapes in their environment. Students will work in diverse groups to complete this activity. Young scholars will make a class book of their findings.This lesson plan...
NC State University
The Engineering Place: Shapes
A lesson in creating 3-D solids using toothpicks and marshmallows.