Compound inequalities are a confusing and abstract concept for Algebra 1 students to wrap their minds around. For many of our students, it’s the first time that they see that x has multiple solutions.
The idea that there can and will be multiple solutions to a problem is an incredibly important concept to teach our students. Understanding the existence of two solutions is a foundational skill that will help them better understand polynomials and functions for their future in Algebra 1 and 2.
Introducing Compound Inequalities
So let’s talk about ways to introduce compound inequalities to your Algebra 1 students. If you’re teaching compound inequalities after basic inequalities, a great place to start is “or” problems. Here’s an example:
I like to use a graphic organizer to go along with my guided notes for compound inequalities. This graphic organizer is a quick reference sheet for my students to see the differences between “and” and “or” problems.
Activities for Compound Inequalities
This card sort is one of my favorite compound inequality activities to use with my students. The students need to solve each inequality, match the written solutions, and identify the correct number line.
This activity is perfect for independent practice, group work, or a formative assessment.
This compound inequalities digital escape room is a fan favorite with my students. It’s a great way to gamify your math classroom. Your students will solve compound inequalities to escape the zombie apocalypse. Get all the details here!
Desmos has super engaging activities for understanding compound inequalities too. Their discovery-based platform gets students thinking about the why behind the how of solving and graphing compound inequalities. Check it out here!
Compound inequalities is a challenging concept for Algebra 1 students to master. It’s so important to give them the time to really understand and practice this skill, so they can be prepared to solve absolute value equations and inequalities.
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