Lesson 29 Straight line graphs
Lesson plan
| Piagetian Level | |||
|---|---|---|---|
| 3 B Mature Formal |
Extension to simultaneous equations, one a quadratic Description of lines in terms of intercept and slope e.g. 3 + 2x = y Analysis in terms of slope = change in y value + change in x value |
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| Pupils relate relative positions to a 4-quadrant coordinate model |  |
Producing equations for all shooting lines | |
| 3A Early Formal |
Pupils get most of the relative positions right in their own drawings
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Finding the slope of shooting the lines from y = 3 by trial and improvement | |
| Description in terms of different sloped and different distances above x-axis | |||
| 2B* Concrete Generalisation |
Representing the problem in graphical terms | ||
| 2B Mature concrete |
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| Middle concrete |
Episode 1 Re-inventing the coordinate system |
Episode 2 Patterns in slanting lines |
Episode 3 Paths of moving objects |
