Discover the role of the heart with a fun and easy prep experiment, further exploration, and an exercise tracker for February or any time of year. This project-based unit encourages students to move around and provides an excellent introduction to the scientific method for young learners. A complete teacher guide is provided. *Newly updated on January 29th, 2024!!!! Now includes 3 activities.*Included in the Hands-On Investigation:NGSS Alignment K and First GradeK-2nd Grade Science and Engineer