standard_description: Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = �� – 3, 6 + 6 = ��.
problem_activity: Narrative
The purpose of this warm-up is to elicit the idea that students can create stories from a picture, which will be useful when students tell their own story problems in a later activity.
Launch
Groups of 2
Display the image.
“What do you notice? What do you wonder?”
1 minute: quiet think time
Activity
“Discuss your thinking with your partner.”
1 minute: partner discussion
Share and record responses.
Student Facing
What do you notice?
What do you wonder?
[IMG]
Student Response
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Activity Synthesis
“What story could we tell about this picture?” (There were 9 books on the table. Then a girl took away 4. How many books are left on the table?)


aligns: no