|
Constellations Knowledge Cards
Each card shows a constellation on the front and the name and pertinent information on the back.
|
|
Dipole Dilemma Puzzle
Place the 28 neodymium spheres in the tray opening so they lie completely flat. Sounds simple, right?
|
|
More Illusions Card Decks
Each deck contains 56 optical illusions and visual oddities, different from the original series.
|
|
Optical Illusion Card Deck
This deck of high quality playing cards includes a different optical illusion on every card.
|
|
The Challenge! - Coin Puzzle
Can you remove the quarter? Easier said than done!
|