178 Missing Children

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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.
MTS Set 1
NSW Curriculum NS2 Addition and Subtraction (1-2)
Topics Separating Sets
Keywords Separating Sets, Adding
GroupingWhole class and small group
ResourcesCounting materials available for each child. Copy the activity to an overhead projector sheet, overhead projector.
Lesson Notes
  • Use this activity with the whole class and an overhead projector.
  • Direct children to the first picture (cover the others). Read the question to the children.
  • Draw a picture of a tree and ask: How can we tell how many koala children are behind the tree? How can we use our 'counters' to help answer the question? (A child can bring 6 counters to the overhead and place 3 counters on the koala children that can be seen. The remaining counters go 'behind' the tree.)
  • Ask: Can you tell me a story about Mrs Koala and her children? ("Mrs Koala has 6 children. 3 of them are holding on to her and 3 are hiding behind a tree.")
  • Provide the opportunity for several children to carry out this task and tell the 'story'.
  • Repeat for the other activities.
ReflectionsAsk: Place children into groups of 3 or 4 and ask: Can you make up an animal story like mine?
Integration Links Not applicable
Internet Links http://home.mira.net/~areadman/aussie.htm Australian animals with easy search facility and photos.
http://ausinternet.com/ettamogah/ Godd general site for children http://www.gdargaud.net/Antarctica/Anaglyph.html 3D pictures of penguins to browse
AnswersNot applicable