Pupils identify the value of quarters, dimes, nickels, and pennies, and use a variety of coins to show the value of a dollar. They count the exact amount of purchase.

Students play a probability game, then design and complete a probability problem concerning changing odds.

Students create a glossary of geometric terms while exploring tangram manipulatives.

Students combine imaginative powers with known map-making techniques to create a whole new world.

Lesson plans for many student activities which introduce the concept of polyhedra into the classroom. Some activities can be accomplished by hand with paper, pencils, and scissors, but the unit works best if the students can regularly...