Lesson Instructions Day 1: (Duration: 60 minutes) 1. Read a book about the Earth’s Layers. I use Planet Earth/Inside Out by Gail Gibbons (1998). 2. Look up a picture of the Earth’s layers (here’s a good URL: http://www.universetoday.com/61200/earths-layers/) or use a poster that shows the Earth’s layers. Introduce or review the different layers of the […]