Difference between revisions of "Quadratic equations introduction to quadratic equation actvity 2"
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| − | =Activity - Name of Activity= | + | =Activity - Name of Activity='''Rectangular garden''' |
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A gardner wants his garden to have a geometrical shape. He decides on the following rules for building the flowerbeds.<br> | A gardner wants his garden to have a geometrical shape. He decides on the following rules for building the flowerbeds.<br> | ||
#They must all be rectangular | #They must all be rectangular | ||
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How many different flower beds can the gardener make if both the sides are of same length. <br> | How many different flower beds can the gardener make if both the sides are of same length. <br> | ||
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| + | ==Estimated Time==30min | ||
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| + | ==Materials/ Resources needed== paper and pen | ||
| + | ==Prerequisites/Instructions, if any==Students need to use their own strategies to solve the equations. | ||
| + | Students may, for example establish a set of equivalent quadratic equations through the balancing method which they are familiar in the context of linear equations. | ||
| + | ==Multimedia resources==nil | ||
| + | ==Website interactives/ links/ simulations/ Geogebra Applets== | ||
| + | ==Process (How to do the activity)==draw suitable diagram for the problem.<br> | ||
[[File:images.jpeg|200px]] | [[File:images.jpeg|200px]] | ||
| − | + | ==Developmental Questions (What discussion questions)==How to find the area and perimeter of the rectangle?<br> | |
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The aim of this activity is to make a situation that leads to the quadratic equation-<br> | The aim of this activity is to make a situation that leads to the quadratic equation-<br> | ||
x(x-3)=4x-6<br> | x(x-3)=4x-6<br> | ||
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x^2 =4x by x <br> | x^2 =4x by x <br> | ||
x=4 | x=4 | ||
| − | + | ==Evaluation (Questions for assessment of the child)==how many roots does the linear equation can have?<br> | |
| + | ==Question Corner== | ||
| + | #Can this equation has any other solutions? | ||
| + | ==Activity Keywords== | ||
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| + | '''To link back to the concept page''' | ||
| + | [[Topic Page Link]] | ||
| + | . | ||
'''To link back to the concept page''' | '''To link back to the concept page''' | ||
[[Quadratic_Equations]] | [[Quadratic_Equations]] | ||
Revision as of 09:50, 20 February 2015
=Activity - Name of Activity=Rectangular garden
A gardner wants his garden to have a geometrical shape. He decides on the following rules for building the flowerbeds.
- They must all be rectangular
- The perimeter and area must be the same.
How many different flower beds can the gardener make if one of the sides ia 3 units less than the other side.
How many different flower beds can the gardener make if both the sides are of same length.
==Estimated Time==30min
==Materials/ Resources needed== paper and pen ==Prerequisites/Instructions, if any==Students need to use their own strategies to solve the equations. Students may, for example establish a set of equivalent quadratic equations through the balancing method which they are familiar in the context of linear equations. ==Multimedia resources==nil
Website interactives/ links/ simulations/ Geogebra Applets
==Process (How to do the activity)==draw suitable diagram for the problem.
==Developmental Questions (What discussion questions)==How to find the area and perimeter of the rectangle?
The aim of this activity is to make a situation that leads to the quadratic equation-
x(x-3)=4x-6
x^2=4x
Students need to use their own strategies to solve the equations.
Students may, for example establish a set of equivalent quadratic equations through the balancing method which they are familiar in the context of linear equations.
- .x^2-3x = 4x-6 => x^2-7x= -6
- .x^2-4x = 0
However ,students will probably have no other methods available but to solve using numerical method. They might set up tables from original eqn.
They need to be encouraged to move through the numbers to find the solutions and to make sense of the solution. It also needs to be made explicit here that we are now dealing with an equation that involves a term with an unknown of second degree. This is one feature that distinguishes it from linear equation.
- note- In using the balancing method pupil might very well divide both sides of equation
x^2 =4x by x
x=4
==Evaluation (Questions for assessment of the child)==how many roots does the linear equation can have?
Question Corner
- Can this equation has any other solutions?
Activity Keywords
To link back to the concept page Topic Page Link . To link back to the concept page Quadratic_Equations