The "What's the "matter" With XOD" activity addresses students' misconceptions and refines their ideas about phases of matter. This activity introduces the characteristics for solids, liquids, and gases, and begins a discussion about physical and chemical changes and how matter can cycle through different phases. Depending on class size and…

Recently, high-probability request sequences has shown promise as a method to enhance student compliance using positive methods without sacrificing the quality of the assignment. High-probability request sequences use a series of preferred behaviors to increase the likelihood that nonpreferred behaviors will occur. For this intervention, a series…