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Constellations Knowledge Cards
Each card shows a constellation on the front and the name and pertinent information on the back.
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Dipole Dilemma Puzzle
Place the 28 neodymium spheres in the tray opening so they lie completely flat. Sounds simple, right?
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More Illusions Card Decks
Each deck contains 56 optical illusions and visual oddities, different from the original series.
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Optical Illusion Card Decks
These decks of high quality playing cards include a different optical illusion on every card.
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Salt Shaker Puzzle
Ask students how to fill and use this unusual salt shaker. The explanation involves inertia, gravitational force, and centripetal force. Available while supplies last.
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The Challenge! - Coin Puzzle
Can you remove the quarter? Easier said than done!
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