invento just play the Purple Cow, Professor Crazy Activity Cards: Indoor Experiments, 20 Cards with Amazing Science Experiments in Household, for Children Aged 6 and Up

EXCITING EXPERIMENTS: Each Professor Crazy metal box contains 20 cards with funky experiments on a wide range of topics - for indoor and outdoor use. SIMPLE AND AWESOME Each card describes in detail and illustrates an exciting experiment while delivering an easy-to-understand, scientific explanation. EDUCATIONAL AND EDUCATIONALLY VALUABLE: Professor Crazy opens up the fascinating world of discovering learning to children and adults - with experiments that are both educational and quite exciting. Materials: The exciting experiments can be carried out with ordinary household materials. Ideal gift: the high-quality metal box and an attractive price point make Professor Crazy the perfect gift for little scientists aged 6 and up., Manufacturer: The purple Cow