I will be using A Reason For Science this year for my K, 2nd, and 3rd graders. Also check out www.hookedonscience.org it has some great experiments (It's my husband's website) :D Anyway if you want you can send him an email at jlindsey@hookedonscience.org and he will try to help you out. He has researched a lot of science curriculum's and might be able to help you out. Thanks and good luck.