Tech Weigh In Sequel

How much does each weigh?


Ontario Grade Levels:
Common Core Grade Levels:

Shared By:
Kyle Pearce

Math Topic:
Solving systems of linear equations, point of intersection, elimination, substitution

Ontario Curriculum Alignment:

Common Core State Standard Alignment:

Tech Weigh In Sequel 3 Act Math Task Resources


Introducing Systems of Equations With Context and Visuals

Tech Weigh In Sequel - Screenshot

Recently, I’ve shared a few tasks related to linear relations with a push to explore multiple strategies including simple systems of equations. The intention of this post is to take students from working with partial variation linear relations to systems of linear equations.

While I’m excited to share the sequel to the Tech Weigh In task, I think it is important that you explore some of the following tasks prior to introducing systems of equations. Check these out with your students as suggested prerequisites prior to introducing the new tasks from this post:

Act 1 – Introduce the Problem

Show students this video.

Ask students what they are wondering? What questions come to mind?

After discussing with a group, help direct the focus to the question:

How much does each weigh?

Students can make predictions and argue why they believe their guess is best.

Act 2 – Give Some Information

Act 2, Scene 1

Show students scene 1.

Scene 2.

Scene 3.

Alternatively, you can show students the following images:

The Weight of 1 x laptop, 1 x iPad Mini, 1 x iPad 2

Tech Weigh In Sequel - Act 2 - 1 laptop, 1 mini, 1 ipad 2

The Weight of 1 x laptop, 1 x iPad Mini, 2 x iPad 2

Tech Weigh In Sequel - Act 2 - 1 laptop, 1 mini, 2 ipad 2

The Weight of 1 x laptop, 2 x iPad Mini, 1 x iPad 2

Tech Weigh In Sequel - Act 2 - 1 laptop, 2 mini, 1 ipad 2

Now, students can try to solve this system intuitively, by graphing or algebraically with substitution or elimination.

Act 3 – Show The Solution

Show students the solution video.

Alternatively, you can show students these images:

Tech Weigh In Sequel - Act 3 - Weight Of Laptop

Tech Weigh In Sequel - Act 3 - Weight Of iPad Mini

Tech Weigh In Sequel - Act 3 - Weight Of iPad2

Try it out and let us know how it goes in the comments!

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