by Buster Books (Author), John Bigwood (Illustrator), Kirstin Swanson (Contributor)
Sherlock Bones and Dr. Catson are entangled in an arithmetic adventure. They must follow a teasing trail of addition and subtraction-themed maths puzzles, and it's up to the reader to solve each sum, all in the hope of foiling Professor Moriratty's evil plan. This charming maths activity book features 'Sherlock's Secret Solver' magnifying glass which reveals the answer to each puzzle when placed over a moire area, allowing children to test their numeracy skills again and again.
Format: Paperback
Pages: 32
Edition: Amazon POD
Publisher: Buster Books
Published: 12 Jul 2018
ISBN 10: 1780555504
ISBN 13: 9781780555508
Children’s book age: 7-9 Years
Book Overview: Ideal for children aged 7+ (KS2), this fun-filled addition and subtraction-themed maths puzzle book allows children to test their numeracy skills again and again, with a built-in 'reveal the answers' feature that uses a moire device.