| | WHAT | HOW LONG | MATERIALS |
| BRIDGE | *Review Quadratic Formula by introducing the fun song from the web: *Tell students being able to graph basic quadratic functions without using a graphing calculator is important (why?) and the Quadratic formula will be a useful method to remember in graphing a quadratic function | 1 minute | |
| LEARNING OBJECTIVES | *to learn how to graph a quadratic function of a standard form,  , by hand | | |
| TEACHING OBJECTIVES | *to teach effective ways of graphing a quadratic function: 1. using domain, range, vertex, x/y-intercepts 2. using a shortcut (a, b, and c relations in ) | | |
| PRETEST | *Test if the students can rewrite the general quadratic equation in standard form by using the method of completing the square | 2 minutes | |
| PARTICIPATORY LEARNING | *Observe changes in graphs by altering a, b, and c in :- discuss the role of a, b, and c (use the following simulation to demonstrate the role of ‘a’ *Do a specific example by sketching a quadratic function of standard form by finding: 1. vertex 2. maximum and minimum 3. x & y-intercepts - analyze the domain and range *Compare the graph on paper with the one on the graphing calculator screen | 1 minute 4 minutes | graphing calculators |
| POST-TEST | *Give students an example to work on their own and let them check their graphs with the graphing calculator *Each of us will go to a group of 5-6 students and help them if questions/difficulties arise | 5 minutes | graphing paper, graphing calculators |
| SUMMARY & WRAP-UP | *If the students grasp the main idea, then we can introduce the shortcut method. (a, b, and c relations in ) 1. x-coordinate of vertex = -b/2a 2. y-coordinate of vertex = c-b^2/(4a) (or by plugging in the x-coordinate to the given function) 3. y-intercept = (0, c) 4. x-intercept = (x, 0), where x can be found by using the quadratic formula *For some quadratic functions with complicated numbers, we might not be able to draw by hand; however, it is important to understand the process and the basic shape of the graph. | 1-2 minutes | |
Friday, October 15, 2010
Microteaching: Sketching a Quadratic Function by Maria, Hungdang,and Esther
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This is a good lesson plan, Hung Dang, and the lesson itself went fairly well. However, you have not yet posted your reflections on your self-assessment and your peers' assessment of the group microteaching. Please do so, and let me know when it is posted, so that I can revise your assignment mark.
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