G2 U10 L7 TE
Applied MP
MPs * Embedded MP
Group Math Task Grade 2 · Unit 10 · Lesson 7
1
2
3
4
5
* * *
MC: 2.OA.4
6
7
8
*
*
Student Journal Pages
(none)
Today, I will work in a small group to apply my knowledge of relating arrays to addition and multiplication.
Materials One student recording sheet for each group. One marker or crayon for each group.
Prep
The recording sheet is divided into 4 sections. Each section is numbered 1-4.
Example:
1
2
3
4
Check for Understanding
Are students able to collaborate in a small group?
Are the students able to arrange objects in an array?
Are the students able to articulate how they found their total number by using the arrays as a resource?
Are students able to articulate what they would do differently to solve the problem? (Error Analysis)
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
Answer Key: VI
HW
1.
1.
6 + 6 = 12
3 + 3 + 3 + 3 + 3 = 15
2.
2.
2+2+2+2=8
5 + 5 + 5 + 5 + 5 = 25
3.
3.
4 + 4 + 4 = 12
4. Arrays may vary; equation must match the array. Sample answer.
4. Arrays may vary; equation must match the array. Sample answer.
5 + 5 + 5 + 5 = 20
Copyright © Swun Math
3 + 3 + 3 + 3 = 12
Grade 2 Unit 10 Lesson 7 T TE
Verbal Instruction
*MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem.
Section 1: Draw an array with 6 columns. Each column must contain 2 circles. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 2: Draw an array with 5 columns and 5 rows. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 3: Draw an array with 4 columns. Each column must contain 3 circles. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 4: Create an array with 20 total objects. Write an addition equation to represent the total number of objects in the array.
Group Presentation *MP3: Do you agree/disagree with what
said?
*MP6: How do you know your answers are correct/reasonable?
How did you solve Section 3? How could you use the same total and create another array?
What would you do differently to solve the problem correctly in the future?
Reflective Closure
Were students able to work together as a group?
Were students able to verbalize the mathematical content?
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
Name: ____________________________ Directions: Solve.
Date: ______________________________
1. Draw an array with 3 columns and 5 rows. Write an addition equation to find the sum of the circles in the rows.
2. Draw an array with 2 columns and 4 rows. Write an addition equation to find the sum of the circles in the rows.
3. Draw an array with 4 columns. Each column has 4 circles. Write an addition equation to find the sum of the circles in the rows.
4. Create an array with 12 objects. Write an addition equation to find the sum of the circles in the rows.
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
MPs * Embedded MP
Group Math Task Grade 2 · Unit 10 · Lesson 7
1
2
3
4
5
* * *
MC: 2.OA.4
6
7
8
*
*
Student Journal Pages
(none)
Today, I will work in a small group to apply my knowledge of relating arrays to addition and multiplication.
Materials One student recording sheet for each group. One marker or crayon for each group.
Prep
The recording sheet is divided into 4 sections. Each section is numbered 1-4.
Example:
1
2
3
4
Check for Understanding
Are students able to collaborate in a small group?
Are the students able to arrange objects in an array?
Are the students able to articulate how they found their total number by using the arrays as a resource?
Are students able to articulate what they would do differently to solve the problem? (Error Analysis)
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
Answer Key: VI
HW
1.
1.
6 + 6 = 12
3 + 3 + 3 + 3 + 3 = 15
2.
2.
2+2+2+2=8
5 + 5 + 5 + 5 + 5 = 25
3.
3.
4 + 4 + 4 = 12
4. Arrays may vary; equation must match the array. Sample answer.
4. Arrays may vary; equation must match the array. Sample answer.
5 + 5 + 5 + 5 = 20
Copyright © Swun Math
3 + 3 + 3 + 3 = 12
Grade 2 Unit 10 Lesson 7 T TE
Verbal Instruction
*MP1: Make sense of the problem and persevere in solving it! *MP8: Find a strategy to help solve the problem.
Section 1: Draw an array with 6 columns. Each column must contain 2 circles. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 2: Draw an array with 5 columns and 5 rows. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 3: Draw an array with 4 columns. Each column must contain 3 circles. Count the total number of objects in the array. Write an addition equation to find the sum of the circles in the rows.
Section 4: Create an array with 20 total objects. Write an addition equation to represent the total number of objects in the array.
Group Presentation *MP3: Do you agree/disagree with what
said?
*MP6: How do you know your answers are correct/reasonable?
How did you solve Section 3? How could you use the same total and create another array?
What would you do differently to solve the problem correctly in the future?
Reflective Closure
Were students able to work together as a group?
Were students able to verbalize the mathematical content?
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
Name: ____________________________ Directions: Solve.
Date: ______________________________
1. Draw an array with 3 columns and 5 rows. Write an addition equation to find the sum of the circles in the rows.
2. Draw an array with 2 columns and 4 rows. Write an addition equation to find the sum of the circles in the rows.
3. Draw an array with 4 columns. Each column has 4 circles. Write an addition equation to find the sum of the circles in the rows.
4. Create an array with 12 objects. Write an addition equation to find the sum of the circles in the rows.
Copyright © Swun Math
Grade 2 Unit 10 Lesson 7 T TE
