Lesson 3 Number lines galore
Lesson plan
| Piagetian Levels | Learners Thinking and abstract of the activity | ||
|---|---|---|---|
| 3A Early Formal |
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| 2B* Concrete Generalisation |
'If I add I make it bigger. With a -ve number it's going down, so if I subtract it must be going up ' Realising that with negative numbers direction of addition and subtraction inverts Subtract larger from smaller creates a number called 'negative'. |
 "below 0"  Equal interval scale |
Finding an expression for converting Fahrenheit to Celsius
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| Relative size of numbers | |||
| 2B Mature concrete |
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| Mid concrete |
Episode 1 Three number-lines |
Episode 2 Constructing a number scale |
Episode 3 Temperature scales |
