價格：免費
更新日期：2018-09-29
檔案大小：201.9 MB
目前版本：1.1
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
What’s the secret word? Use SUBTRACTION to find out.
Each letter is hidden inside a set of boxes, and each box has a math problem. Do the math problems, select all the correct boxes (just like BINGO), and see the hidden letter. Finish all the letters to uncover the secret word.
Customize the math difficulty with three levels.
Customize the spelling difficulty with three levels--- more than 1,500 words!
Great homework practice for young & curious students, and a nice way for grown-ups to keep minds sharp. Designed for ages 3 to 103!
See the YouTube demo on our website.
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Copyright 2016-2018, Otto PD. All rights reserved.
Patent Pending.
支援平台：iPhone, iPad