This is one of my favorite lessons!! Have you ever seen those amazing water gels that can grow twice their size? You can find them in Wal-Mart or even Michaels. In this lesson, students explore to learn what makes them change and then they design an experiment to see how temperature affects the rate of change. Lesson plan covers 5 days (20 minutes at a time) and includes opportunities for students to use the science experiences in order to write!!