Everything you need to help the little ones (5-7 years old) practice addition and subtraction independently or in small groups.Tout ce dont vous avez besoin pour aider les petits de 5-7 ans à pratiquer l'addition et la soustraction indépendamment ou en petits groupes.If you buy this product and are not satisfied for any reason, please email me at mathiasesther057@gmail.com and I will fix the problem or refund you 100%. Also, please kindly rate my product (s) and follow me so you will be the fi