Planning a unit on simple machines? Save some time and energy with this collection of lessons and activities that explores how these devices are used in the real world to make life a little easier. 

Students examine concept of time, and explore difference between analog and digital clocks; students make art project to represent time and create a time-story problem and solution.

Fifth graders imagine an aquarium filled with 1,000 fish on a math worksheet. They express each species as a fraction of the total number of fish in the tank. Students reduce each fraction to lowest terms and then express them as...

Middle schoolers create a chaotic system. They display a basic knowledge of the system and are able to recognize it. The students form a hypothesis about a chaotic system and theorize the cause and effect.