First, give an exit slip to your students based on a particularly important concept (PIC) for which you want to check for understanding.

Next, sort the exit slips into piles based on the method students chose to use (whether they used it perfectly or not). Choose two examples from the student work that highlight one or two probably misconceptions students still have on the chosen PIC.

Remove identifying information from the student work, photograph it (or use a document camera) and show it the next day in your class. Ask students a question about the work that requires them to think about the work. "Which one of these two examples is correct?" is not a very good question because it can be answered by guessing. "Why do I really want these two students to talk to each other about their solution?" is a good question because if students answer it, they will have to think about the concept a bit differently.

Repeat this every day.

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David is a Formative Assessment Specialist for Mathematics at **New Visions for Public Schools** in NYC. He has been teaching since 2002, and has worked in Brooklyn, London, Bangkok, and Vancouver before moving back to the United States. He has his **Masters degree in Educational Technology from UBC**, and is the **co-author of a mathematics textbook**. He has been published in **ISTE's Leading and Learning**, **Educational Technology Solutions**, **The Software Developers Journal**, **The Bangkok Post** and **Edutopia**. He blogs with the **Cooperative Catalyst**, and is the **Assessment group facilitator for Edutopia**. He has also helped organize the first **Edcamp in Canada**, and **TEDxKIDS@BC**.

- Creating a WiiMote interactive white board at my school for under $50.
- 20 reasons not to use a one to one laptop program in your school (and some solutions)
- What is Edcamp?
- For whom are Interactive White boards Interactive?
- Mathematics education blogs
- Forget the future: Here's the textbook I want now
- Eight Videos to Help Teachers Get Started Using Twitter
- Why educators should blog: A helpful flowchart
- There are no aha moments
- Paper use in schools
- 15 things kids can do instead of homework
- Online Geogebra training
- The difference between instrumental and relational understanding
- What is The Effect of Technology Training for Teachers on Student Achievement?
- Why teach math?
- Using Google forms for a "Choose your own adventure" style story
- Ways to use technology in math class
- A Fundamental Flaw in Math Education
- We are homeschooling our son
- A Restitution Guide to Classroom Management
- 25 Myths About Homework
- The Death of the Amateur Mathematician
- Migrating away from Google Reader
- Free tools for math education
- The Role of Immediacy of Feedback in Student Learning

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## Comments

## Five minute formative assessment strategy

Great idea. I love the discussion opportunities this would generate. Perhaps you do this but it was unstated was following the discussion allow time for the students to make corrections to their work or try the other method. The other students receive enrichment. While that turns it into a 10-15 minute formative assessment, it's time well spent.

I've used quick sorts as well, however I sort them into 3 piles: exceeds, meets, and not yet for the purpose of identifying who understands the mastery objective. Then provide feedback in the form of questions. For example if 6th graders are finding the area of a triangle and they are multiplying the two known sides I might write, "How can the base and height help you?" Then they are returned to students to continue work.

Many of my students are able to identify other students' handwriting so I would probably project work from another class. Or digitize them to save for the future classes.

Like you said, "Repeat this every day." I need to do this.

## Yeah, it would probably take

Yeah, it would probably take longer in class if you ask students to revise their work. My thinking was that the preparation for this activity takes 5 minutes of teacher time outside of the classroom, and potentially 5-10 minutes of class time.

## Why wait until tomorrow for what you can do today?

Actually, I can think of lots of reasons, but in the spirit of closing the formative assessment feedback loop as moment-to-moment as possible, you might like this Teaching Channel video on "My Favorite No": https://www.teachingchannel.org/videos/class-warm-up-routine

(I think the particular example filmed is not the most wonderful, but the core strategy is a great idea - giving a concrete thing to work with but pushing for some potentially complex reasoning.)

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