Make an illustrated map of Captain Cook's voyages. Try your hand at some aboriginal style art from Australia. Use our printables to make a mega timeline of life from the earliest bacteria to human beings all courtesy of the fossil record. And learn about the principles that make art beautiful. Layers of Learning Unit 3-15 includes all of this, dozens more explorations, plus library lists, printables, and links to take you to the web. 60 pgs. Full color. This is a PDF. In each unit you'll find a recommended library list, important background information about each topic, lots of activities to choose from for kids of all ages, and sidebars with a bunch more ideas including Additional Layers, Fabulous Facts, On The Web, Writer's Workshop, Famous Folks, and Teaching Tips. Printable maps and worksheets are included at the end of each unit and may be printed as often as needed for your family or class.