Unit 9, Lesson 10
What’s the Question?
Grade 2
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The purpose of this Notice and Wonder is to elicit different questions from students about a story to prepare them for writing their own questions for a math story in an upcoming activity. Although students may notice and wonder many things, the most important discussion point is the types of mathematical questions that can be asked about the story.
There are 37 kids on the soccer field. There are 18 kids on the tennis courts. There are 25 kids at the picnic tables.
What do you notice? What do you wonder?
None
The purpose of this activity is for students to ask a question that can be answered with the given information and then answer the question. There are many different questions students can ask including:
These questions require all the given information to solve. Students may also ask questions which require only some of the information to solve, such as, “How many apples did Han pick?”
The Activity Synthesis focuses on sharing different questions students asked and sharing how they found the answer, with a focus on the multi-step problem “How many apples did they pick altogether?” Images are provided for display, however, student work should be used as much as possible in the Synthesis.
Elena picks 29 apples. She picks 14 fewer apples than Han. Han picks 15 more apples than Diego.
None
The purpose of this activity is to interpret student work with given numbers and use a story context to determine what question was answered. The first problem shows a tape diagram that puts together the three quantities in the story. The second problem shows a compare tape diagram with the three given quantities and an unknown. In each case, students need to reason about the representations and the given information to determine what question the work could answer (MP2). Determining the relationships between quantities and using them to ask questions and solve problems is an aspect of modeling with mathematics (MP4).
The goal of the Activity Synthesis is to identify questions, especially for the second problem, and discuss strategies for performing the calculations.
Clare picks 51 apples. Lin picks 18 apples. Andre picks 19 apples.
This work shows the answer to a question about the apples.
What’s the question?
Explain how you know.
This work shows the answer to a question about the apples.
Diagram. Two rectangles of equal length. Top rectangle, split into three parts. First part, shaded, length 19. Second part, shaded, length, 18. Third part has a dashed outline, length, question mark. Bottom rectangle, shaded, total length, 51.
What’s the question?
Explain how you know.
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