A breezy, enjoyable middle grade mystery that pulls off the difficult feat of being both educational and entertaining, thanks to its easygoing prose and dry sense of humor.

Kids who are into math will take special delight in the story, but those with zero interest in math will find themselves not only unable to put it down but turned onto math before they’re finished.

I just wanted to say thank you for another book! My son struggled with learning to read but he instantly fell in love with this series. He reads them over and over again. When the latest book comes in, he throws his iPad to the side and grabs the book to start reading immediately.

These books are as interesting for adults as they are for children. If you have not already found the value and mysteries in mathematics, just read these novels to your children.

This is an engaging series combining math and literacy. Perfect for middle school kids as well. Highly recommend this for the math classroom or just reading for fun.