FREE Christmas Color by Code Worksheet | Addition Within 20 🎁 Make math festive and fun with this FREE Christmas Color by Code worksheet! Students practice addition within 20 while coloring a cute Christmas-themed picture—perfect for building math fact fluency in an engaging way. This single-page freebie is great for Kindergarten, 1st Grade, and 2nd Grade, and works well for December math centers, morning work, early finishers, or holiday homework. ✨ What’s Included ✔ 1 Free Christmas Co