## Reflected Triangles + #ShowYourWork

08 Sep

I’ve used the Illustrative Mathematics task Reflected Triangles for several years now. This year students practiced “Show Your Work” (from Jill Gough) along with coming up with a correct solution.

Level 4: I can show more than one way to find a solution to the problem.

Level 3: I can describe or illustrate how I arrived at a solution in a way that the reader understands without talking to me.

Level 2: I can find a correct solution to the problem.

Level 1: I can ask questions to help me work toward a solution to the problem

Which of the directions can you follow exactly to construct the line of reflection? Are there any that need clarification?

Students wrote first and then constructed their lines of reflection. I used the Class Capture feature of TI-Nspire Navigator to watch. We’ve spent longer on this task in the past, but this year, I only had about 5 minutes for a whole class discussion. Whose work would you select for the whole class to see?

We started with Kaelon’s construction.

How is Holly’s construction different? Can you tell what Holly did?

How is Phillip’s different? Can you tell what he did?

We are well on our way towards learning how to “describe or illustrate a solution in a way that the reader understands without talking to me”, as the journey continues …

Posted by on September 8, 2015 in Angles & Triangles, Geometry, Rigid Motions

### 2 responses to “Reflected Triangles + #ShowYourWork”

1. September 8, 2015 at 6:59 pm

Love this post! I find that I am really having to reign in my expectations for #showyourwork as we start this year. I have to celebrate where they are NOW and not fret over the progress they need to make. Do you feel the same way at the beginning of the year?

• September 10, 2015 at 5:40 am

Hi, Kato! I absolutely feel the same way! It’s also challenging for me to try not to push too much to learn at the beginning. I have to make myself take one practice or process at a time so as not to overwhelm!