Reflection: Discourse and Questioning Find intercept by solving equations - Section 3: Practice


This video captured a conversation between myself and a student on finding key features of a logarithmic function. Through question I am able to assess the students understanding and help the student decide if his idea of finding key features of a logarithmic function will work for him.  He could use the method he talks about but he decides trying to remember how the key features are connected would make his process more difficult.

I loved that this student was seeing the connections between exponential and logarithmic functions and thinking how he could use the exponential function, which is more familiar to him, to find the key features of a logarithmic function. I was able to confirm that this student has a good grasp of the connections I have been working to create in the unit.

  Discourse and Questioning: Students thinking
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Find intercept by solving equations

Unit 3: Exponential and Logarithmic functions
Lesson 6 of 11

Objective: SWBAT find x and y intercepts for logarithmic or exponential graphs

Big Idea: It is sometimes necessary to solve an equation to find the x and y intercepts of a logarithmic or exponential graph.

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Math, graphing exponential functions, Graphing logarithmic functions, PreCalculus, exponential function, logarithmic functions, equation solving, Properties of Logarithm
  70 minutes
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