Using logic, the “rules of science” and a pair of tweezers players must process the info on the challenge card and place the correct microbe into the petri dish. Fastest scientist wins. For 2-4 players. Comes with 5 challenge cards, 49 colorful multi-shaped microbes, 4 tweezers and 5 petri dishes. Fun way to improve visual processing, problem solving, attending and hand skills.