I use this book in order to encourage my kids to think mathematically, in order to solve everyday problems and to help them in their school work. If you want to use it with kids, I recommend looking through the book first on your own and then using and teaching kids the mental math ideas one by one. It's fun and the kids enjoy being able to work calculations out in their head. A bit of work is involved but it's all fun but serves the purpose of encouraging kids to like math because it's practical. It's also useful for adults though. Highly Recommended.
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