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176 Counting Sets 3

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Teacher Notes


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Activity OutcomeSeparating a set (to 10) into 2 sub-sets. Recombine sub-sets to find original total.
Year 1
Australia - WA Curriculum 8 Calculate (Add and Subtract 1-2)
Topics Separating Sets
Keywords Separating Sets, Adding
GroupingWhole class and independent
ResourcesNot applicable
Lesson Notes
  • Provide children with a copy of activity sheet A.
  • Direct children to Task 1 and ask: How many shapes are there? How many different shapes are there? What are the shapes called? If you colour the short rectangles, how many rectangles will not be coloured?
  • Direct children to colour the short rectangles.
  • Ask: How many rectangles did you colour? How many rectangles are not coloured?
  • Read the story number sentence with the children.
  • Repeat for Task 2.
  • Direct children to complete Task 3. Share responses.
  • Provide children with a copy of activity sheet B.
  • Direct children to Task 4 and ask: We need to draw a set of 10 rectangles. Do you need to make all the rectangles the same? Direct children to draw 10 rectangles.
  • Say: Now I want you to colour some of the rectangles. How many rectangles will you colour?
  • Ask: How many rectangles have you coloured? How many are not coloured?
  • Direct children to the recording boxes and ask: What is missing in the first sentence? Second sentence? Third sentence?
  • Repeat for Task 5.
ReflectionsAsk: Can you make up a story problem like mine?
Integration Links Not applicable
Internet Links Not applicable
AnswersNot applicable