This Topsy and Tim activity book has shiny, wipe-clean pages and also comes with a special pen to make practising first sums as easy as 1, 2, 3! Number bonds from 1-10 are introduced in the order that they are taught in schools and content has been approved by an educational consultant. Simple sums and interesting maths activities help to reinforce first adding and subtracting skills, while colourful pictures of Topsy and Tim and their world are fun and reassuring. Help your child to fill in the ...