Information about the resource

Topic: Number > Four Rules > Subtraction
NNS Reference: Year 2 > Choose and use appropriate operations and efficient calculation strategies to solve problems, explaining how the problem was solved.
Original question level: 2c Testbase reference: 96.T.01

Teaching ideas

Warm up:

• Arrange and ask - Are more ducks on pond or grass? Fewer ducks on grass or on pond etc
• Various numbers in and out of pond - Count how many in/out/ altogether

Thinking:

• Predict, if (n) ducks leave pond how many will be left on pond? Operate and check answers.
• Tell me how many ducks to take out of the pond to have (n) ducks left on the pond
• Arrange ducks - Ask the difference between the number of ducks on the grass and the number on the pond

Puzzle:

• Can you work out how many different ways there can be more ducks on the pond than on the grass?
  

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