This 41-page science mini-book was created to help teach the Next Generation Science Standards for 4th grade. This booklet covers 4-PS3 (energy) and 4-ESS3 (earth and human activity).It covers the following principles: what is energy, how does energy work, different kinds of energy, potential & kinetic energy, moving energy, light energy, sound energy, heat energy, electrical energy, natural resources, renewable vs. non-renewable resources, wind energy, hydropower energy, solar energy, geoth