The document describes a math book about penguins where the reader groups penguins in different ways to write number sentences, types number sentences based on penguin pictures, and completes a counting and pattern activity by moving penguin images. The reader groups penguins to write number sentences like 7+3=10 penguins and 6+4=10 penguins, types the number sentence 5-2=3 penguins for a picture, and completes a pattern by moving penguin images numbered in a counting by twos pattern.