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This charming book is the second in the ‘Number Friends’ series and has been designed to help young children explore the concept of doubling. Join the Number Friends as they embark on an exciting pirate adventure, with lots of doubling fun along the way!



Instructions to make your own ‘doubling doorway’ – see what you can double at home or school!

Doubling certificate signed by Tommy and Tilly!


Great for P.E ideas or garden games – can you scurry like a mouse, flutter like a firefly or march like the Grand Old Duke?


Created to appeal to a wide range of learning styles, and learning needs including dyslexia, the ‘Number Friends’ series and uses familiar characters to explore early maths concepts.

Number Friends and the Doubling Doorway

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