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If you have a child that has a hard time with static math worksheets then this might be a good option for you. This small lightweight unit is a great tool to use for basics, practice and more. The buttons are large and easy to read. The voice is clear and easy to understand and there are a variety of games with different levels to explore for the comfort of the child. The only thing that I would change would be separating the addition and subtraction. If you have a beginner or a child who gets anxious with math like mine, then it might be hard for them to recognize that it has changed from addition to subtraction. Other than that I highly recommend this! Easy to charge with the included USB, no batteries needed!!