SUDOKU FOR KIDS Vol 2: 4 x 4, 6 x 6, 9 x 9 Grids for Kids + Colouring124 puzzles from Easy to Challenging in this 6" x 9" paperback book for ages 6 years and up. With a Dinosaur Theme and lots of rewarding colouring in, plus some Dinosaur facts and a bookmark to cut out. Help your child increase concentration and feel happy and smart!