Use knowledge of calculating within 20 to solve problems involving statistics
I can use knowledge of calculating within 20 to solve problems involving statistics
Use knowledge of calculating within 20 to solve problems involving statistics
I can use knowledge of calculating within 20 to solve problems involving statistics
Lesson details
Key learning points
- When adding three addends, it is efficient to first add two addends using a known fact e.g. pair to 10 or double.
- When adding, we can bridge 10 by partitioning a part so that we can ‘make 10’.
- When subtracting, we can bridge 10 by partitioning a part to create a part that is equal to the ones digit of whole.
- The difference can be found through subtraction.
Common misconception
Children may struggle to correctly read the information presented within the pictogram/bar chart.
A ruler can be used to help children line up the top of the bar with the scale. Model this as a strategy to support accurate reading.
Keywords
Interpret - Understand and give meaning to mathematical data.
Efficient - Not wasting time or effort. An efficient strategy is one we can carry out easily.
Bridge 10 - Addition or subtraction that crosses the 10 boundary.
Difference - The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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Starter quiz
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