Reflection: Developing a Conceptual Understanding Inequalities: True or False? - Section 1: Introduction


This is one of my favorite inequality activities. I really like how students are asked to kind of play around with an inequality that is true and check and see if it remains true after they do the same operation to both sides. Too often we tell students how things are in math, rather than letting them figure it out for themselves.  I find this task to be simple but powerful and it does a good job of highlighting the differences of how we can manipulate equations versus inequalities.

  Students uncover the rule
  Developing a Conceptual Understanding: Students uncover the rule
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Inequalities: True or False?

Unit 1: Introduction to Algebra: Focus on Problem Solving
Lesson 13 of 14

Objective: SWBAT determine which operations keep inequalities true. SWBAT understand why multiplying or dividing an equality by a negative number makes it false. SWBAT write inequalities based on problem situations.

Big Idea: Is 4 always less than 6? Students explore what happens when they perform the same operation on both sides of an inequality.

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