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1st Grade Task: Aisha's Rule

Standards & Objectives

Learning objectives:

Students will:

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.
Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Essential and guiding questions:

Tell me about your thinking.
How do you know Aisha is adding 4 to every number?
Can you use these numbers in a different way to see if you get the same answer?
Can you show your thinking using a number line, or a part, part, whole diagram?
What if Booker gives her the number 20?
What if Aisha changes her rule to minus 2 each time, how would that change the answers she gave Booker?
Tell me about your thinking.
I see your thinking. So what is Aisha’s rule?
Can you use these numbers in a different way to see if you get the same answer?
Can you show your thinking using a number line, or a part, part, whole diagram?
What if Booker gives her the number 20?
What if Aisha changes her rule to minus 2 each time, how would that change the answers she gave Booker?
How will you decide what Aisha will say when Booker gives her a number like 15?

Activity/Task Variations

Blooms taxonomy level:

Understanding

Extension suggestions:

If students finish early…

Tell me what you found.
What problems did you have during your work?
What if Booker gives her the number 20?
What if Aisha changes her rule to minus 2 each time, how
would that change the answers she gave Booker?

Originator:

Tennessee Department of Education