Tech Weigh In Sequel

How much does each weigh?


No Expectations/Standards Selected
Ontario Alignment By Grade
Ontario Alignment By Overall Expectation
CCSS Alignment By Grade
CCSS Alignment By Standard

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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About Kyle Pearce

I’m Kyle Pearce and I am a former high school math teacher. I’m now the K-12 Mathematics Consultant with the Greater Essex County District School Board, where I uncover creative ways to spark curiosity and fuel sense making in mathematics. Read more.


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