Reflection: Writing Across the Disciplines Interval Notation - Section 7: Closure

As I discuss how the notation can be confusing comments about interval notation looking like an ordered pair always arise.

Students get upset when mathematical notations can mean different things.  To help them see how we have this same issue in other areas I tell the students to write the word "red" on their paper.  I then write "read" on the board and ask how many students wrote this? Most student write red. The students say I need to have a sentence to know which one you mean. I respond oh you need to know the context of the word is that similar to the notation you need to know the context the notation is being used.

Here is another example of literacy in mathematics. The notations sometimes depend on the context of the notation.

Notations can have different meanings
Writing Across the Disciplines: Notations can have different meanings

Interval Notation

Unit 2: Functions and Piecewise Functions
Lesson 1 of 15

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

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Standards:
Subject(s):
Math, Precalculus and Calculus, range, domain restrictions, 11th Grade, 12th Grade, interval notation, function, Mathematical literacy, function
60 minutes

Katharine Sparks

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