Two students looking at a ruler.

Fourth graders in Mrs. Patrocky's class have been learning about the structures and functions of the human body. This week, students were focusing on the brain and the nervous system. After a few lessons about how our brains send signals through our bodies, students put their brains and bodies to the test. Students dropped rulers for each other to measure their reaction time. They had a great time discovering how quickly their brains could deliver a message to react!