Global Math Project Experiences
6.2 ADD TILL IT’S PLAID
And a second honour from Henri: his beautiful geometric approach to solving systems of equations. Stunning!
Henri writes:
These are two lessons on the relationship between linear equations in ax+by=c form and their graphs.
The first explores what happens when a point moves left and right, or up and down, and how it affects its relationship to the line’s equation. It lays the conceptual groundwork for solving systems graphically.
The second shows what happens graphically when you combine two linear equations by addition, subtraction, and/or scaling, and leads to a strategy for solving systems.
Both lessons involve GeoGebra files, which you can download for use in your classroom.
To find the two lessons, head here.
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