In this set of worksheet activities, students will be guided to discover formulas for area of polygonal shapes and circles.

Straightforward instructional activity that introduces students to pi by letting them measure real objects and solve a challenge problem. Includes instructions and a "Data Sheet" for keeping track of measurements. Available in English...

Students analyze data by finding the mean, median, mode, and range of a set of numbers. Line plots, bar graphs, and circle graphs are also included in this lesson.

Try to figure out the area of this challenging shape. In order to view the images, you will need to use JavaSketchpad.

The CyberSquad has to deal with angles and distances to locate a treasure chest in this video segment from Cyberchase.

Excellent resource for "paper-plate" activities that help simplify various astronomy topics. Learn how to build a "Moon Finder" and "Planet Pointer," and create a paper-plate model that explains the Transit of Venus.

This page offers a variety of math center ideas for general math and geometry. Instructions on setting up the center are not provided for most ideas, however, those lacking instructions are pretty self-evident.