I would never us them to puzzle with them … just to decorate an apartment in the new future.
The premise sounds simple enough: take the wooden particle apart and then try to rebuild it without sneaking a peek at the solution. But watch out, recognizing spatial relationships and spotting the solution is about as easy as seeing an atom, particle, cell or molecule with the naked eye! Each measuring six inches in diameter, these extra-large, science-inspired brainteasers for older kids or grown-ups will put your gray matter to good use. Each puzzle has a different concept and difficulty level.
More info: Lab Test Games