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K-5 Grade 2 Unit 3 Lesson 11

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Lesson 11

Warm-up Activity 1 Activity 2

Unit 3, Lesson 11

Saree Silk Stories: Necklaces and Bracelets

Grade 2

Warm-up

What do you notice? What do you wonder?

Scissors cutting ribbon.

Diagram. rectangle partitioned into 2 parts. First part, Total length, question mark. Other part, Total length, 16. Total length of rectangle, 54.

Activity 1

Girls in saris dresses.

What do you notice? What do you wonder?

Priya has a ribbon that is 44 inches long. She cuts off 18 inches. How long is it now?

Andre draws this diagram to help him think about the problem.

Diagram. rectangle partitioned into 2 parts. First part, total length, question mark. Other part, total length, 18. Total length of rectangle, 44.

What does the “?” represent in the story?
Why do you think there is a dotted line between the parts?
Find the unknown value. Show your thinking using drawings, numbers, or words.
Priya’s ribbon is __________________ long.

Activity 2

Label the diagram. Find the unknown value. Show your thinking using drawings, numbers, or words. Write the units.

Elena starts with 58 inches of ribbon. She gives Clare 27 inches of ribbon. How much did Elena keep?
Han has a piece of ribbon that is 64 inches long. He cuts off 28 inches to make a necklace for his sister. How much ribbon is left?
Priya cuts off 25 inches of ribbon. She has 38 inches of ribbon left. How much ribbon did Priya start with?

Scissors cutting ribbon.

Standards Alignment

Building On

Addressing

Building Toward

2.MD.5

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

View Full Standard

Standards Alignment

Building On

Addressing

2.MD.5

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

View Full Standard

2.NBT.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

View Full Standard

Building Toward

Standards Alignment

Building On

Addressing

2.MD.5

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

View Full Standard

2.NBT.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

View Full Standard

Building Toward