PhysicalSci is an interactive study tool for the topics of matter and energy. It provides simulations, videos, vocabulary flash cards, and a glossary for all the topics covered. It is like having the textbook with animated experiments for the students to observe. Much of the material is geared more towards upper elementary, middle school, and high school. However, as a former fourth grade teacher, there are plenty of resources I would use within this app for teaching science. As I am looking through the Indiana science standards, it would supplement the physical science as well as the science, engineering and technology standards for third and fourth grade well.