We learned several different things in this science chapter,but for the sake of time heres a few.We learned about expansion and contraction, we learned about heat, and we learned about conductors and insulators.Something that I liked best about this unit was probably the activity about all the different ways to make popcorn. Something that I liked least about the unit was remembering all the things like convection, conduction, radiation, and thermal energy. Do you know what thermal energy is?