This comprehensive unit introduces students to wave energy in the form of light and sound. The unit begins with lessons relating to waves. Many hands on opportunities help students develop a strong understanding of necessary concepts. This unit was designed to address several standards in the NGSS fourth grade curriculum: 4-PS3-2, 4-PS4-1, 4-PS4-2, and 4-LS1-2. This unit is appropriate for grades 3-5If you are looking for a digital version of this product click here.Here's a list of all th