The last equation is a fantastic book for any child. Once you read the book you should read the other books in the series.

This was my first book I ever read from PJ our way. It also was the best book I read this month. I think everyone should read and enjoy it's adventure. If you are getting this book, I hope you like it!

it was SO GOOD!!!! i stayed up all night reading this. i was seriously thinking about writing the author for another one. there are not enough books like this in the world.

People who love math and puzzles, this is perfect for you!

I couldn't put it down.