Lesson C-3A. Energy and Force
Bradley, Kimberly Brubaker. Forces Make Things Move (Let’s-Read-and-Find-Out Science 2). HarperCollins, 2005.
Gray, Susan M. Experiments with Motion (True Book). Children’s Press, 2012.
Swanson, Jennifer. Explore Forces and Motion! With 25 Great Projects. Nomad Press, 2016.
Ward, D. J. Simple Machines (Let’s-Read-and-Find-Out Science 2). HarperCollins, reillustrated 2015.