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Develop your students’ graphing abilities with this multi-day series of linear function challenges:
Lesson Notes
This series of “match my graph” challenges stems from this experience with two of my classes. (An related update is available here.)
While the content is appropriate for younger students (Grade 6 and above), I’ve found that even older, more mathematically experienced students benefit from working through these challenges (even those in Calculus).
There are three ways to play:
- Display the slide image (graph plus brief directions, included below) via projector and have students work on a new Desmos graph
- Direct students to the graph URL (included below)
- Print a copy of the slide image and have students work with pencil and paper only
Depending on your classroom situation, you may find that one of those works better than another. My preference is for #1-2.
Also, though I typically advocate for 2:1 computing with almost all Desmos activities (2 students, 1 device), for this series of challenges I would recommend a 1:1 setup. Student collaboration is still a valuable element of this lesson, but requiring every student to apply what they’re discussing to their own Desmos graph has proved useful with each of my classes.
One final note before we get to the goods: This is not intended to be a single lesson, but rather eight separate mini-challenges. Depending on your students, the challenges may take anywhere from 2 to 20 minutes (or even longer). To keep this format fresh, and to keep students engaged, I recommend a “short and sweet” approach, rather than packing several challenges into a graph-matching-marathon.
Match My Graph #1
https://www.desmos.com/calculator/dfdexjzqvy
Match My Graph #2
https://www.desmos.com/calculator/phmxercufm
Match My Graph #3
https://www.desmos.com/calculator/c1chlcvltp
Match My Graph #4
https://www.desmos.com/calculator/nhaxiuju8h
Match My Graph #5
https://www.desmos.com/calculator/yzxmok4xbm
Match My Graph #6
https://www.desmos.com/calculator/gsiemb0l7c
Match My Graph #7
https://www.desmos.com/calculator/du7avodbhn
Match My Graph #8
https://www.desmos.com/calculator/3mbhbczmiw
Extensions
For challenges that require a single line (#1, 3, 5, and 7), you may extend the task for early finishers with this:
- How many different equations can you find that will match the graph?
Even on the relatively simple Challenge 1, with zero prompting I saw at least six different solutions. Here are a few.
Resources
- All images (.zip)
- Link collection (for sharing with students): bit.ly/rw-match-my-line
Standards
- CCSS 7.RP.A
Understand ratio concepts and use ratio reasoning to solve problems. - CCSS 8.F.A
Analyze proportional relationships and use them to solve real-world and mathematical problems. - CCSS 8.F.B
Define, evaluate, and compare functions. - CCSS HSF.IF.C
Analyze functions using different representations. - CCSS HSF.LE.A
Construct and compare linear, quadratic, and exponential models and solve problems.
Shout Outs
More Lessons
Looking for more lessons? Click here.
Comments 5
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Michael, I really like this idea for reviewing linear concepts. Rather than using it in my “linear unit” I think I’ll use it before we start comparing and contrasting different families of functions. I’ll do a couple of the linear match my graphs and a couple of the quadratic ones. I’m betting it would work well for exponential too.
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Author
Thanks, Andrew! I have half a mind to create an exponential series of challenges. Maybe you’ll beat me to the punch. 🙂
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I might be predicting the future, but are you making this into a series of steps using activity builder so you can watch the students progress?
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Author
Hi Martin! Great question. 🙂
As it turns out, Match My Line was the first thing I tried to build in Activity Builder. You can find a link to it at the bottom of the Activity Builder landing page: https://teacher.desmos.com/activitybuilder
Cheers!
Pingback: Desmos Math Journey: Representations of Linear Relations
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