Secret Code Addition with Christmas — Grade 1

Here addition wears a disguise. A legend assigns each of the Christmas things a number; the child reads each row of pictures, substitutes the numbers, and adds three or more of them together. The decoding gives a reason to keep going, but the real work is the multi-number addition that defines Grade 1. Every sum is held within twenty, so a child can fall back on counting to be sure the code came out right.

The legend turns addition into look-up-and-combine, which mirrors how a child will later use facts they know: find each value, then total them. Practised within twenty with three or more addends, it is solid Grade 1 work — the puzzle keeps engagement high while the repeated multi-number adding does the real teaching, every total small enough to check by counting the decoded numbers.

Children who like christmas treat each row as a small puzzle, which keeps a code-breaker happily adding. When this feels easy, crack the code in secret code addition with classroom objects, or try secret code addition with faces (black & white). You can also browse every secret code addition worksheet or the whole Christmas things collection for grade 1 — each sheet prints cleanly or plays online for free.