Learners use clock arithmetic to find remainders. In this patterns in math lesson, students explore the relationship between clock arithmetic and remainders using a computer applet. Learners also identify patterns in Pascal's triangle...

A study of an image from The Library of Congress collection Civil War Photographs 1861-1865 launches an investigation of the connection between the Civil War and American industrialization. After analyzing “Petersburg, Va. The...

Fifth graders determine how to convert fractions, decimals, and percents. In this conversion lesson, 5th graders use an on-line applet to practice making these conversions. They review how to make the conversions in a whole class lesson...