Addition vs Subtraction: Spot the Difference!
Year 1 & 2 Mathematics WALT: Identify the differences between addition and subtraction
WALT & Success Criteria
WALT: Identify the differences between addition and subtraction Success Criteria: • Classify problems correctly as addition or subtraction • Use physical and virtual tools to support learning • Work collaboratively in groups with appropriate challenges
What Do You Already Know?
Think about these questions: • What happens when we add things together? • What happens when we take things away? • Can you give an example of each?
Addition vs Subtraction - Key Differences
{"left":"Addition means ADDING or putting things together\nWe use the + symbol\nThe answer gets BIGGER\nExample: 3 + 2 = 5","right":"Subtraction means TAKING AWAY\nWe use the - symbol\nThe answer gets SMALLER\nExample: 5 - 2 = 3"}
Interactive Sorting Game
Let's sort these problems together! • Listen to each story problem • Decide: Addition or Subtraction? • Drag the card to the correct column • Explain your thinking using: 'This is addition because...' or 'This is subtraction because...'
Small Group Challenge Time
Work in groups of 4-5 students Sort your problem cards into two piles Use counters or drawings to check your answers Help each other explain the differences Teacher will visit each group for support
Reflection Time
Think and share: • How can you tell if a problem is addition? • How can you tell if a problem is subtraction? • What clue words help you decide? • Which operation makes numbers bigger? Smaller?
Success! What We Learned Today
We can identify addition and subtraction problems Addition (+) makes numbers BIGGER Subtraction (-) makes numbers SMALLER We used tools and teamwork to solve problems Next lesson: We'll practice with bigger numbers!