Reviewed for 2009, Geocentral, Second Grade

Like people, every rock is unique. This little science set introduces four seemingly normal rocks, each with a hidden talent: one floats, one's a magnet, one can create sparks, and another grows its own sparkly crystals. The small hands-on kit comes with a sample of each rock and a set of easy experiments to bring their talents to light. A cool way to jump-start an interest in rocks and minerals. (Geocentral, $6.75)

Where to buy Activity Rocks