Banana Boy's 3rd science unit was the African Savanna. This one was pretty informal and he watched a lot of movies. Some of our favorites were
Mama Mirabelle's Home Movies
Wildebeest: The Great African Migration (you can read my review of this movie at Amazon)
and some National Geographic movies.
We also read the One Small Square: African Savanna
I promised him (foolishly) that he could make a diorama of the savanna when he was done. This would have been a great and fun project for the girls, who love to draw from Draw Write Now books. BB, however, spends a lot of time looking at this book, making some marks with a pencil, then crumpling the paper, throwing it at the wall and stomping around the room.
So one morning, we made a very quicky diorama, with Mom doing much of the work. Now BB is happy to have his African scene and he took it up to the attic where he adds the little plastic African animals from the drawer to his scene.