You can download the Britannica Kids Rainforest app for free right now from iTunes. Here is the description of what this app does:
Explore the world’s rainforests and the unique animals, plants and people which inhabit them in this latest addition to the Britannica Kids series. This app is perfect for exploring the secrets and mysteries of rainforests in a fun and engaging way. Learn and play at the same time through a variety of games like Memory Match, Jigsaw Puzzles, and the Magic Square among others. Explore the earth’s rainforests through a wealth of amazing images (which you can e-mail to friends!) videos and informative articles.
I think this looks like a fun and educational app for the kids!
Head over to iTunes to have a look.