Just a quick update to let you know of a great deal you may want to take advantage of.
CAST 2014 is this week in Dallas, TX. 9 of us science teachers from Teachers Pay Teachers got together and created an awesome bundle of products for the event. Even if you are not at the conference you can take a look at the activities online and purchase. http://www.4mulafun.com/product/science-teachers-of-tpt-volume-1/ This is a limited run product and 80% off retail value. Enjoy.
This bundled CD includes a great selection of products at a huge discount!