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| ==Website interactives/ links/ simulations/ Geogebra Applets== | | ==Website interactives/ links/ simulations/ Geogebra Applets== |
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− | [http://academic.sun.ac.za/mathed/malati/Files/Equity991.pdf'''more about quadratic equation'''] | + | [http://academic.sun.ac.za/mathed/malati/Files/Equity991.pdf '''more about quadratic equation'''] |
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| ==Process (How to do the activity)== | | ==Process (How to do the activity)== |
− | '''A gardener wants his garden to have an interesting geometrical appearance. | + | '''A gardener wants his garden to have an interesting geometrical appearance.''' |
− | He decides on the following rules for building the flowerbeds''' | + | He decides on the following rules for building the flowerbeds |
| They must all be rectangular. | | They must all be rectangular. |
| The perimeter and the area must be the same. | | The perimeter and the area must be the same. |
| 1. How many different flowerbeds can the gardener make if one of the sides is | | 1. How many different flowerbeds can the gardener make if one of the sides is |
| 3 units less than the other side as shown in the diagram below: | | 3 units less than the other side as shown in the diagram below: |
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| ==Evaluation (Questions for assessment of the child)== | | ==Evaluation (Questions for assessment of the child)== |
| + | *pupils will probably have no other method available but to solve these |
| + | equations using numerical methods<br> (setting up a table or proceeding with guess and |
| + | improve). <br>*The pupils might set up tables from the original equations:<br> |
| + | x 2 − 7x −6<br> |
| + | 6 − 12 −6<br> |
| + | 10 − 12 −6<br> |
| + | x x(x − 3) 4x − 6<br> |
| + | 3 0 4 <br> |
| + | *The pupils need to be encouraged to move through the numbers to find the solutions |
| + | and to make sense of the solution in the context of the problem.<br> |
| + | *It also needs to be made explicit here that we are now dealing with an equation that |
| + | involves a term with an unknown of the second degree. |
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| + | Image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Regular_polygon_4_annotated.svg/220px-Regular_polygon_4_annotated.svg.png |
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| ==Question Corner== | | ==Question Corner== |
| ==Activity Keywords== | | ==Activity Keywords== |
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− | '''To link back to the concept page'''
| + | [[Category:Quadratic Equations]] |
− | [[Topic Page Link]] | |