❤️ Valentine’s Day Color by Code – Addition with Number Lines (Sums to 10 & 20) Make math practice fun, visual, and stress-free with this Valentine’s Day Color by Code math activity! Students solve addition problems using a number line and follow the color key to reveal adorable Valentine-themed pictures. This resource is perfect for math warm-ups, centers, independent work, early finishers, or sub plans—and it keeps students engaged while reinforcing addition skills. 📌 What’s Included: ✔