# Standards

• Common Core
• HSA.REI.C.6 – Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.
• TEKS
• A.5(C) – solve systems of two linear equations with two variables for mathematical and real-world problems

## 2 thoughts on “Systems of Equations: Introduction”

1. K Cox

I used this as a introduction to systems and really liked it. I especially loved that students noticed the “equal” stacks weren’t exactly equal. How did you explain the y-intercept for zero cups wasn’t zero centimeters in a way that made sense to students?

1. Thank you for the comment and feedback! Andrew Stadel did a great job designing that lesson.

For the y-intercept, I told them that it would make more sense to label our table as the number of cup rims for the x values and the total height for the y values. That way, if you take away all the rims, theoretically there would still be the base of the cup left over. Also, I really tried to emphasize how the height was changing. It was growing by an additional cup rim each time. Then, I asked what stayed the same the whole time which was the base of the cup.

Let me know if that helps!

This site uses Akismet to reduce spam. Learn how your comment data is processed.