Looking for STEM curriculum?  Check out the Think Earth website for FREE, hands-on lessons.  There is a Teacher’s Guide that includes step-by-steps for lessons delivery.  All units correlate to Common Core State Standards, NextGen Science Standards, and McREL Online Standards Compendium.  Additionally, all print materials are available online.   What does it mean to Think Earth? Conserve natural resources, Reduce waste, and Minimize pollution!

Website: http://thinkearth.org/index.php