Madagascar is a great place to give children an appreciation for nature. It has a unique ecosystem. There are species here that exist nowhere else in the world, not even in continental Africa. Lemurs, for example, only exist because the island of Madagascar broke off from the African continent a few million years ago and none of the lemurs' prey ended up on the island with them. Madagscar has no venomous snakes for the same reason - none of the snakes' prey ended up on the island with them.
We also saw plant species that you don't find elsewhere, like the vanilla plant (yum!), a "crown of Christ" and yellow bamboo trees.
Next, we visited a crocodile farm.