Lower KS2 Christmas Code Breaker Lesson

Aimed at Years 3 and 4, students need to solve addition and subtraction code breaker problems using formal written methods in order to crack the Christmas themed codes. This resource includes:

• A PPT with a quick warm up, a practise code breaker and a missing number addition problem.
• Code breaker activity with three levels of differentiation:
  – Addition and subtraction with 2 and 3 digit numbers involving some carrying for addition and no exchanging for subtraction.
  – Addition and subtraction with 3 digit numbers involving carrying for addition and exchanging for subtraction.
  – Addition and subtraction with up to 4 digit numbers involving carrying for addition and exchanging for subtraction.
• Challenges with three levels of differentiation, challenges 1 and 2 involve missing number calculations. Challenge 3 involves word problems using different words to mean addition and subtraction.

• Answers.

Looking for more Christmas themed activities? Try our KS2 Advent Calendar or our KS2 activity bundle.

Looking for something for Years 5 and 6? Try our Upper KS2 Code Breaker Lesson.