Use the five provided double-sided activity cards to perform simple experiments using common household and classroom materials, ask observation questions, and introduce basic scientific concepts. Perfect for stations or independent exploration. Ages 5+. Each large ring magnet measures 1¼'' in diameter. Each colorful plastic disc measures ¾'' in diameter and includes a metal ring around the circumference making it magnetically receptive. The storage stand comes in 5 pieces and measures approximately 9'' L x 2¾'' W x 4¼'' H when assembled.