Thursday, May 23, 2013

Linear Equations Graffiti Posters

WOW does time fly by- my last blog post was January 13 and it is now May 23! I think it goes without saying I have been a terrible blogger this year.  I have had the best of intentions of posting new ideas over the past few months- I have the pictures on my phone to prove it :)

One of my favorite activities from this year was a graffiti poster on linear equations.  I used this activity to summarize several of the investigations in the curriculum I teach.  I was becoming increasingly frustrated that my students could tell me all parts of the equation (independent variable, constant rate/slope, dependent variable, y-intercept) but could not connect how the equation could be communicated in the table and graph.  I thought that if students could get all of the connections out of their mind and in their face on a poster the connections would happen.

Before students started on their posters I showed them an example of the end product.  Students worked in groups and were given one linear equation.  I tried to include some more difficult equations like an equation that has  slope of one or y-intercept of (0, 0). 

I had student color code each part of the equations to help keep their ideas organized. 

 I loved the final products and we had great conversations about each poster.  Next year I will try to start this poster earlier in the book to have an ongoing summary.  I want students to keep reflecting on the equations and add new knowledge after every investigation. 

I am 3 weeks away from summer which hopefully means I can spend more time updating this poor neglected blog :)

Happy Thursday!


  1. I found the same is true with my students. I like the idea of having them make the posters and sharing thier different veiwpoints. Sometimes it only takes something small to make that connection.

  2. Hi, I'm Janelle! I am a third year middle school teacher, and I have been browsing through teacher blogs recently. Yours looks fun, so I decided to follow. I am always looking for new ideas, and I always try to share mine when I can!

    -Janelle at

  3. This is awesome! I am emailing you some graffiti my husband and I saw on a building at MIT a few summers ago - real-world connections! :)

    1. Thanks for the picture Denise! I can't wait to show it to my students next year when I introduce the graffiti poster!

  4. Haha nice and creative project. A good way to impart students with mathematical concepts and ideas. This strategy is amazing. Thanks for sharing. I'm sure your students will learn a lot from these activities. Good luck with a new school year.

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  5. This idea is wonderful! It's great to see students breaking down the equations into smaller parts so they can understand. Add the visual element and you have a recipe for success! Did you get any feedback from the students on what they thought about this project?

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    1. The students were very engaged during the activity but had a little bit of a hard time seeing the connections between all the posters. I am interested if I can facilitate a better conversation next month when I do the activity again!