Fourth graders watch a video and find the circumference of a pumpkin. In this circumference lesson, 4th graders watch a video to help them find the circumference of their pumpkins. Students define the word circumference on their data...

Students examine how ancient Maya counted, and practice addition and subtraction using Maya number glyphs.

Students complete several activities to learn about currency and the functions of money. In this money functions lesson, students complete activities to learn what are the functions of money. Students calculate item prices with...