Innately curious, infants and toddlers love to explore, investigate, and discover-making the earliest years a perfect time to begin teaching the foundations of STEM. This book defines what science, technology, engineering, and math education looks like for this age group, and why it is so vital for children to develop STEM knowledge. Expand your understanding of STEM to lay the foundation for children to develop skills in critical thinking, communication, collaboration, and creativity. This book supplies fifty play-based developmentally appropriate activities for introducing STEM. All activities include extensions, inquiry questions, and tips on how to help parents strengthen children's learning at home.