This is a storybook + worksheets pack, inlcuding one simple storybook and 3 sets of worksheets on colors, big & small, and counting & addition (up to 8).Both the book and worksheets contains 3-4 difficulty levels for kids of different developmental capacities. Suitable for children age 1-4 years, especially kids on the autism spectrum disorder, learning difficulties, and other developmental delay and special needs. The pages contain very limited pictures and words to avoid too much visual s