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.
This is Book 1 in the The Sherlock Bones Practice Workbook Series. See all The Sherlock Bones Practice Workbook books here.
See More Educational: Mathematics & numeracy
John Bigwood (Illustrator)
John Bigwood is an illustrator and graphic designer who illustrates titles for children and adults across a range of genres. John studied Illustration and Animation at Falmouth College of Art and currently lives and works in London.
Jonny Marx (Author)
Jonny Marx is a book editor a