Groundhog Day: Investigating Shadows and Light Grades: Kindergarten Leave this field blank 2 votes with an average rating of 0.5. In this Kindergarten STEM lesson, students explore the concepts of light and shadows using Groundhog Day as a thematic starting point. The lesson begins with an engaging introduction through a SciShow Read more about Groundhog Day: Investigating Shadows and Light Holidays Groundhogs Day Shadows Math Integration