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From Karnataka Open Educational Resources
Quadratic Equations application activity1 (view source)
Revision as of 17:37, 5 November 2019
, 17:37, 5 November 2019added Category:Quadratic Equations using HotCat
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'''To link back to the concept page'''+
==Website interactives/ links/ simulations/ Geogebra Applets==
==Website interactives/ links/ simulations/ Geogebra Applets==
−http://academic.sun.ac.za/mathed/malati/Files/Equity991.pdf
+[http://academic.sun.ac.za/mathed/malati/Files/Equity991.pdf '''more about quadratic equation''']
==Process (How to do the activity)==
==Process (How to do the activity)==
+'''A gardener wants his garden to have an interesting geometrical appearance.'''
+He decides on the following rules for building the flowerbeds
+They must all be rectangular.
+The perimeter and the area must be the same.
+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:
+
+
+
+
+
+2. How many different flowerbeds can the gardener make if both sides are the same
+length, as shown in the diagram below:
+
==Developmental Questions (What discussion questions)==
==Developmental Questions (What discussion questions)==
+
+#pupils should be encouraged to use their own informal methods before being
+introduced to formal solution procedures.
+#revisit the concept (meaning) of the solution of an equation. The number
+of solutions of an equation (no solution; 1 solution, 2 solutions or many solutions)
+will be dripped.
+#out of this they will extract the notion of a quadratic equation, so as to distinguish it
+#finally, we will reflect on the solution procedures.
+
==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.
+
+
+Image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Regular_polygon_4_annotated.svg/220px-Regular_polygon_4_annotated.svg.png
+
==Question Corner==
==Question Corner==
==Activity Keywords==
==Activity Keywords==
−[[Category:Quadratic Equations]]
−[[Topic Page Link]]
