# Module 2 - Ed Partners

```Title
Designing Jewelry
3
SBAC Assessment Claim
Claim #1:
Students can explain and apply mathematical concepts and carry
out mathematical procedures with precision and fluency.
Claim #2: Students can solve a range of complex well-posed
problems in pure and applied mathematics, making productive
use of knowledge and problem solving strategies.
SBAC Assessment Target
Apply mathematics to solve well-posed problems arising in
everyday life, society, and the workplace. Model with
mathematics using a variety of methods.
Learning Goal
Demonstrate understanding of number relationships and principles
underlying the structure of the number system. Apply understanding of
properties of multiplication and the relationship between multiplication
and division when multiplying and dividing.
Represent and solve problems involving multiplication and division.
Item Type
Standards
3.OA.3: Use multiplication and division within 100 to solve word
problems.
3.OA.5: Apply properties of operations as strategies to multiply and
divide.
3.OA.6: Understand division as an unknown-factor problem.
Practice(s)
1, 2, 3, 4, 6, 7
Depth of Knowledge
1,2,3
In Parts One, Two, Three, and the Performance Task, students will
construct justifications in words, diagrams, and symbols to
support their problem solutions as they relate to the number
relationships and properties when multiplying and dividing.
Tasks will increase in level of rigor, as well as mirror the
corresponding progression of conceptual understanding.
The final Performance Task will require students will
demonstrate increasing ability to make use of structure inherent
in the number system to generate unique solutions to an open
question.
Students will demonstrate increasing fluency when multiplying
and dividing within one hundred in the Performance Task.
Designing Jewelry
Part One:
Children are learning to make jewelry during summer camp.
1. Jenna plans to make pearl necklaces which have 24 pearls each. If 6 pearls are in one
package, how many packages will she need to make necklaces for 10 friends?
2. Taj decides to create another style of a 24-bead necklace which uses beads in packs that
hold 8 each. How many people can receive necklaces if he buys 12 packs?
3. a. The craft supply room also has loose beads. Trayvon chooses blue beads that come in
scoops of 4 and red beads in scoops of 8. Unfortunately, the Craft Teacher spills
Trayvon’s bag and can only tell Trayvon that she picked up 48 beads. What are the
possible amounts of each color he may have chosen?
4. b. Demonstrate your solution(s) using a diagram, chart, number sentence, and/or a
picture.
c. Explain in words how you know your solution(s) would be possible. Describe any
patterns you notice between more than one possible solution.
Part Two:
In a Native American village, children are experts at making beautiful beaded belts.
4.a. Each belt is four strings wide. Draw a total of 20 green beads with an equal number
on each string.
________________________________________________
G
rr
r
________________________________________________
________________________________________________
________________________________________________
Write a multiplication sentence that describes your picture of the green beads.
Write a multiplication sentence that describes your picture of the yellow beads.
d. Write a number sentence that describes all the beads in your picture.
Use parentheses to combine the multiplication sentences from 1c and 1e.
(
) + (
)=
Part Three:
At the village, every child is making a belt to celebrate the return of spring.
5. a. If four beads make a line across the four strings,
________________________________________________
G
rr
rG
________________________________________________
rr
rG
________________________________________________
rr
r
________________________________________________
G
rr
design yourr own belt using one group of green beads and one group of yellow beads for
Draw a picture of your belt.
b. Write a number sentence that shows the number of green and yellow beads in each
group.
c. Use words and numbers to describe your belt.
Design three different belts using green and yellow lines of beads with a total of 60 beads
each. Remember that the belts must be four beads wide.
6.a .
Draw your three belts. Include a number sentence under each belt.
b.
Describe the belts’ patterns using numbers, symbols, and words.
Designing Jewelry
Credit for specific aspects of performance should be given as follows:
1. 40 packages
Show work and explain thinking (may include a correct process
but incorrect arithmetic)
2. 4 people
Show work and explain thinking (may include correct process
but incorrect arithmetic)
3. a. Solutions must include:
 Quantities of blue- bead scoops whose products are
multiples of 4
 Quantities of red- bead scoops whose products are
multiples of 8
must have a sum of 48 when added together
Points
Total Points
1 point
1 point
2 points
1 point
1 point
2 points
1 point for
solution
4 points
(Possible solution): 2 blue scoops and 5 red scoops
(Possible solution): 4 blue scoops and 4 red scoops
b. Solution(s) may be presented in a chart, diagram, picture,
number sentence.
For example: Number Sentence: (2 x 4) + ( 5 x 8) = 48
1 point for
representation
(chart, etc)
c. Explanation: Look for phrases such as:
 Blue groups are all made by multiplying by 4
 Red groups are all made by multiplying by 8
 48 can be divided into equal groups by sets of 4 and sets of 8
 As blue scoops increase by 2 groups, red scoops decrease by 1
group
4. a. Diagram of necklace drawn correctly.
Number sentence: 4 x 5 = 20
b. 8 beads; 4 x 2 = 8
d. (4 x 5 ) + ( 4 x 2 )= 48
2 points for
explanation of
math
reasoning
Accept all solutions that include multiples of 4 in a range of
groups from 1 to 14. Total number of beads for both green and
yellow beads must be equivalent to 60
Example: 14 groups of 4 green beads and 1 group of 4 yellow
beads is equal to 60 beads total , or (14 x 4) + (1x 4) = 60
Use properties to decompose into simpler numbers:
14 x 4= 4 x 14 (Commutative Property) and (4x 2)x 7 = 56
(Associative Property)
a. Diagram/picture of the belt
b. Correct number sentence corresponds to the diagram
c. Explanation of why the belt can be made with two colors
6 . a. Accept all solutions that will fit on a belt 4 strings wide, have
two colors, and have 60 beads total
Student must include an appropriate corresponding number sentence
to describe each belt.
Each belt must be unique.
b. Student must explain the relationship between the belts’ designs
1 point
1 point
1 point
1 point
5.
4 points
3 points
1 point
1 point
1 point
1 point/belt
1 point/ belt
for each
number
sentence
1 point/belt
3 points
3 points
3 points
(color arrangement and quantities) and the number sentence used to
describe them using words.
for each
explanation in
words
Total Points
24 points
```