$10.95
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This Thinking Putty has incredible magnetic properties! It's tougher than ... more
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$11.95
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Learn about the science behind chocolate as you mix up your own delicious c... more
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$11.95
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With this kit you can make a battery from a potato, lemon, water, coins, or... more
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$13.95
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An inexpensive, easy-to-use pocket microscope that can be carried along any... more
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$13.95
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Discover chaos and its random behavior with this fascinating toy that uses ... more
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$14.95
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Grow some of the most unique plants - a variety of cacti and succulents tha... more
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$21.95 $14.95
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This classic beginner rock collection contains 15 number-coded 1.5" specime... more
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$24.95 $14.95
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This is an economical collection of 35 mounted and labeled 5/8" specimens. ... more
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