Students read The Gadget War by Betsy Duffey. They complete a variety of cross-curricular activities surrounding inventors and inventions. Included are reading, art, math, science, writing, social studies, and library connections.

Students examine six simple machines by looking at pictures of real world objects.

Fourth graders predict, observe, and compare what happens when a force is applied to an object. In this forces lesson, 4th graders complete a 'swinging hammer' activity to learn about forces and motion.