This product was designed for intermediate grade levels. I have to give a MA state science test for grades 3-5 and develop my units for review and instruction. My state is adopting the NGSS standards and we will be transitioning next year. This unit covers the relationship of the Earth, moon, sun and planets. It covers relative distance of planets from the sun, patterns of daily changes in length, shadows from sun, day and night and seasons. I designed the unit for grades 3-5, but can be adap