Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

Explore elements and compounds in the context of particle models and chemical formulas!

Explore and classify matter using particle models with this chemisty worksheet!

Apply concepts of energy and motion to marbles in this fourth-grade worksheet!

Brush up on some physics vocabulary with this energy word search!

Learn the language of chemistry by reading and writing chemical equations in this middle-grade worksheet! 

Discover the difference between physical properties and chemical properties of matter in this informative science worksheet!