by: Mountain Rose Multi Media • 0
Can you do the math under time pressure? Prove it with Marble-Math! You get a pile of marbles with numbers and arithmetic symbols. Above that you’ll see a target number. It's your job to match that number by rapidly tap on the right numbers, and symbols. The more marbles you use, the higher your score. Marble-Math offers four different levels of difficulty, which makes it a brain teaser for any age.