Children will have fun learning simple arithmetic with these LARGE 8.5" x 11" monkey calculators. Choose the Monkey ADDER for help with addition, the MONKEY SUBTRACTOR (sold separately) for help with subtraction, or the MONKEY MULTIPLIER (sold separately) for help with multiplying. Then slide the monkey's feet so his toes point to the numbers you want to add, subtract, or multiply and the correct answer will appear in the ring between the monkey's hands!. Makes math fun!. Just slide the monkey's feet to the get the correct answer. No small parts and travel friendly. Makes a great companion for traditional flash cards. 4+ years. Grade PK+