Robertson 
Counting by Fives [PDF ebook] 

In Counting by Fives, readers will learn how to count in sequence with repetitive text and imagery of familiar items. This 24-page title features colorful visual aids, simple text, comprehension and extension activities, and more to effectively engage beginning readers and reinforce the basics of counting. The Concepts: Shapes and Numbers series takes the learning of basic concepts to the next level. By connecting colors, counting, and shapes to what children know will result in greater understanding. Colors looks at the colors found in different seasons, Counting introduces children to the different ways they can count their favorite things, and shapes allows them to be creative and see what they can build.