This experiment is so simple...all you need is a ruler! It is a great opportunity to get students involved in doing the work of scientists. They also learn about the messages that our brains send and receive by testing reaction time. The experiment could be conducted as a whole class or in small groups.
This product includes a two page student handout, answer key, and tips for the teacher. Feel free to leave a comment or ask a question at my store if you have any questions!
My students certainly enjoyed this experiment, and I hope yours will too!