K-2 math concepts include power of 10. Let's learn to count by 10 with sea creatures! Kids will learn the different combinations that add up to ten and how to count by tens as they explore the ocean and its dazzling array of sea creatures. Forty jellyfish, fifty reef fish, sixty corals, seventy manta rays help illustrate groups of 10 to aid kids in counting, building up to 100. Kids can count, then watch the playful dolphins surf the waves! ABOUT THE SERIES: In Nature Numbers, math is beautiful, recognizable, and all around us! Highly engaging pictures of animals and nature scenes, along with cool chalk illustrations, are used to introduce basic math concepts and encourage kids to see a world of numbers all around them.