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.
Jonny Marx is a book editor and bibliophile. He grew up in Stamford and has commissioned and edited more than 50 titles and worked with dozens of talented illustrators and authors along the way. He is the author behind 'The Book of Beasts' series. Jonny lives in London. Dr Gareth Moore (B.Sc (Hons) M.Phil Ph.D) is the internationally best-selling author of a
More about Buster BooksJohn Bigwood is an illustrator and graphic designer who illustrates titles for children and adults across a range of genres, such as the best-selling Sherlock Bones series and How to Draw People for the Artistically Anxious, among others. John studied Illustration and Animation at Falmouth College of Art and currently lives and works in London.
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