Sure enough, stop the presses. I was caught unawares.
The booklet that comes with the Keva blocks was worth a thousand words, of course, and the most thoughtful of our compadres took a moment to look at and read the simple booklet before proceeding. That was their success.
Come to find out, Keva blocks teach simple but profound concepts of design and construction. A tightly webbed inter-locking of the bricks achieves enormous stability and firmness.
Check it out for yourself:
In addition, we always host a Take Apart Table that encourages teens to dig under the surface and deconstruct the way electronic toys work.