Kids develop basic math skills with this handy, portable plastic board. No more flash cards. No battery needed. 81 keys, each with a math equation on it. Press the key down to reveal the answer.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.