The addition doubles are a building block for learning the addition facts. Learning these addition doubles is one of the important skills that children develop as they learn about mathematics. To support them with this skill, this book uses rhymes and engaging illustrations to introduce facts like: 2 + 2 = 4 and 8 + 8 = 16 When reading this book, encourage children to count the images of each illustration carefully. Counting is an essential outcome as children develop early number knowledge. Most importantly, have fun Children learn best when they are engaged in their learning.