This kit gives some structure to free-form building with planks, including an idea book with instructions for building ball-track structures, ramps, funnels and more. It allows for scientific experimentation as kids test rolling the two included lightweight balls to see if they move as anticipated. 
— "A new concept kit will help kids build bigger and better — simple, open-ended and smart," said John MacDougall, owner of 
Golden Apple Learning Store in Pleasanton, Calif., at 
Toy Fair 2010.
— It was also a top-two favorite at ASTRA's Share the Fair event during 
Toy Fair 2010.
— In an April 2012 survey, Elmer Carranza, manager of 
Doodlehopper 4 Kids in Springfield, Va., told 
TDmonthly that KEVA blocks are their best selling construction toy.