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| === Objectives === | | === Objectives === |
− | Being able to identify the roots of the quadratic equations. | + | Being able to identify the roots of the quadratic equations graphically. |
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| === Estimated Time === | | === Estimated Time === |
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| ===Prerequisites/Instructions, prior preparations, if any === | | ===Prerequisites/Instructions, prior preparations, if any === |
− | Knowledge about equations, linear equations, | + | Knowledge about equations, linear equations, meaning of quadratic equations |
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| === Materials/ Resources needed === | | === Materials/ Resources needed === |
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| The general form of quadratic equation is ax²+bx+c=0,where a, b, c are known values, x is variable and a≠0.This equations can also occur in different forms such as ax²+bx=0, ax²+c=0 and ax²=0. | | The general form of quadratic equation is ax²+bx+c=0,where a, b, c are known values, x is variable and a≠0.This equations can also occur in different forms such as ax²+bx=0, ax²+c=0 and ax²=0. |
− | # open the Geogebra file | + | # Open the Geogebra file |
| ## Start with values of b=0, c=0 | | ## Start with values of b=0, c=0 |
− | ## In quadratic equations why is a≠0? What happens to the quadratic equation, if a=0?
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| ## Change value of a to 1 (keeping b=0, c=0 and see what happens) | | ## Change value of a to 1 (keeping b=0, c=0 and see what happens) |
| ## Change value of c to 1, 2, 3 etc (keeping a=1, b=0 and see what happens) | | ## Change value of c to 1, 2, 3 etc (keeping a=1, b=0 and see what happens) |
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| === Evaluation at the end of the activity === | | === Evaluation at the end of the activity === |
| + | In quadratic equations why is a≠0? What happens to the quadratic equation, if a=0? |
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| Go back to the page - [[KVS Algebra|click here]] | | Go back to the page - [[KVS Algebra|click here]] |