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Great book. Fun for those in my family that find math easy, and those that have trouble with math in school (we have the full spectrum in my house). Read morePublished 15 days ago by Geoff R
What an interesting book. I wish I knew about the skills in the book earlier.Published 20 days ago by Byeol Kim
it is a nice little book, I am a college student and I love to show off some of the tricks I learned from the book to my friends, and I alway end up labelled as "Smart". Read morePublished 21 days ago by Spicy Pepper