There’s also an accompanying teacher’s guide, with teaching ideas across the grades from kindergarten to high school. (Look inside the guide here.) In the upper right corner of the screen, a green starburst appears with text: Which one doesn’t belong? What is the average class size at this school?” would produce numerical data with some variability.

My classes thoroughly enjoyed this book and our conversations about shapes. It generated deep thinking and brought up a few questions that we are still wondering about. In a good way!’

Graph 34

I think it would also be very interesting to have the students write their own reflections. Did they find this activity interesting and why? What do they think they learned from this activity? At the conclusion of the unit, I would like to repeat the activity and see how their answers and explanations change. Will I see any growth in their vocabulary? Will they notice new differences based on the properties of the figures?

On average, what is the furthest, in miles, that each student in this class has ever been from home? A speech bubble out of the yellow shape over 2:3 appears that reads: Ok, so this one doesn’t work. Why else might 5 not belong?A green starburst shape appears in the upper right corner. Inside is text: Which one doesn’t belong?]

I thought the WODB activity might generate some interesting conversations and serve as a review for our geometry unit which we were concluding. So we gave it a try! Which One Doesn't Belong? and other resources and I've always found the routine to be a good one for math learning and supporting conversations around math. Which One Doesn’t Belong? has won the Mathical Book Prize, which will be presented to Christopher Danielson at the National Math Festival in Washington, DC on April 22, 2017. The Mathical Book Prize is an annual award for fiction and nonfiction books that inspire children of all ages to see math in the world around them.

Give AI a Try!

How many students are on the roster for this class?” would produce numerical data that does not vary. There is only one value in the data set, so there is no variability. I was inspired by the work of Christopher Danielson, so I started creating my own WODB activities geared towards students in elementary and middle school. For each of the 4 questions, write a survey question that will help you collect data from the class that can be analyzed to answer the question.