This Earth Day Color by Number worksheet is a no-prep, print-and-go activity designed for 1st–2nd grade students to build foundational math skills while staying engaged in a seasonal, meaningful theme. Students solve simple math problems (such as addition and subtraction within 20 or basic number recognition, depending on your version) and use the answers to color a hidden Earth Day-themed picture. The final image reinforces Earth Day concepts with visuals like the Earth, trees, flowers, and rec