Catalysts, reactants, or products? The final unit in the middle school chemistry module examines chemical changes. Tweens perform experiments to determine what factors impact the rate of chemical reactions, study energy changes, both...

Photosynthesis, extinction, biomimicry, and bioremediation. Young environmental engineers study these processes. Using photosynthesis as a model and biomimicry as an example, groups research how nature provides hints for engineering...