The different types of tigers, where they're from and their characteristics. Very interesting.
Diagram of a Human Heart for Kids
Squats and abs
30 Day Plank Challenge (Download PDF) http://www.changeinseconds.com/30-day-plank-challenge/
Take the 30 Day Push Up Challenge this month and get those big ripped arms you always wanted, simply by doing push up exercises every day for a month
Work your way up to doing 100 squats in about a month! This great exercise strengthens your thighs, rear, and even your abs. So learn proper form and get going!