standard_description: Explain why the sum or product of two rational numbers is rational; that the sum of a rational number and an irrational number is irrational; and that the product of a nonzero rational number and an irrational number is irrational.
problem_activity: Narrative
The purpose of this warm-up is for students to make sense of the structure of a story problem, which will be useful when students solve story problems and write equations in a later activity. The problem does not have numbers, so that students can focus on the action of the problem.
Launch
Groups of 2
Display story problem.
“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?
Kiran has some books.
His friend gives him some more books.
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Student Response
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Activity Synthesis
“Where might numbers fit into this story problem?” (To tell the number of books Kiran has and the number of books he gets from his friend. To tell how many books Kiran has in all.)


aligns: no