Reflection: Interval Notation - Section 2: Bell Work


I was surprised when one student in each of my classes ask which range do you mean.  I asked the students to clarify.  The students brought up how range is used in analyzing data. I asked the students to read the prompt. "Does the prompt give you a clue to which range?"  Each one said oh you want "y or output".  

As soon as I see the word domain I do not even think of range as analyzing data.  This was a great opportunity to teach a reading skill, using contextual clues. Students do not think about using the context of the problem to understand a term in mathematics.  Using context also helps students understand whether (3,6) is an ordered pair or interval notation.

  Domain and Range
  Domain and Range
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Interval Notation

Unit 2: Functions and Piecewise Functions
Lesson 1 of 15

Objective: SWBAT express and interpret different methods for writing intervals.

Big Idea: Explore the different methods of writing intervals in describing domains, ranges and intervals describing graphs.

  Print Lesson
Math, Precalculus and Calculus, range, domain restrictions, 11th Grade, 12th Grade, interval notation, function, Mathematical literacy, function
  60 minutes
interval notaton
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