Grab the interest of that kid who just doesn't like math with this great site!
physics experiment with coins
Your Guide to Health and Fitness Tracking Apps
How writing affects your brain
Works like a charm! You might want to use a rubber band instead of string, because the higher friction between the band and the hammer's handle makes it MUCH easier to adjust without the string sliding down the handle.
Exercises for Knee Strength and Flexibility
The Core Challenge - an amazing workout to tone and tighten your tummy!
21 most incredible themed races...definitely putting these on my list!!!