If i knew and kangaroo brain teasers for mathematics mind opening questions packed with attention and intelligence boosting puzzles that kids will love! you can write on the cards or get the answer with the erasable stylus. box contents: - 54 task cards - 106 activities - write and erase pen age group: suitable for ages 6 and above.. more than 100 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.