Download 4.OA.5 Task 3 - 3-5 Formative Instructional and Assessment Tasks

Formative Instructional and Assessment Tasks
Lawn Mowing Business
4.OA.5 - Task 3
Domain
Cluster
Standard(s)
Materials
Task
Operations and Algebraic Thinking
Generate and analyze patterns.
4.OA.5 Generate a number or shape pattern that follows a given rule. Identify apparent
features of the pattern that were not explicit in the rule itself. For example, given the rule
“Add 3” and the starting number 1, generate terms in the resulting sequence and observe
that the terms appear to alternate between odd and even numbers. Explain informally why
the numbers will continue to alternate in this way.
Activity sheet
Lawn Mowing Business
Ted and Nancy both mow lawns during the summer to earn money.
Ted charges $10 per lawn and $2 per hour.
Nancy charges $4 per lawn and $4 per hour.
Part 1:
Complete the table to show how much Ted and Nancy would each earn based on the
amount of time that it took to mow a lawn.
Ted
Nancy
½ hour
1 hour
1 and ½ hours
2 hours
2 and ½ hours
3 hours
3 and ½ hours
4 hours
Part 2:
Explain how you found the amount for both Ted and Nancy in the table.
Part 3:
Last week, Ted and Nancy each mowed 3 lawns that took 1 and ½ hours each, and 7 lawns
that took 3 hours each. How much money did they each earn? Write an equation to show
your work.
NC DEPARTMENT OF PUBLIC INSTRUCTION
FOURTH GRADE
Formative Instructional and Assessment Tasks
Rubric
Level I
Limited
Performance
 The student
is unable to
use strategies
to find
correct
answers to
any aspect of
the task.
1.
2.
3.
4.
5.
6.
7.
8.
Level II
Not Yet Proficient
 The student has
between two to
four incorrect
answers.
Level III
Proficient in Performance
 The answers are correct.
 Part 1:
Ted
½ hour
11
1 hour
12
1 and ½ hours
13
2 hours
14
2 and ½ hours
15
3 hours
16
3 and ½ hours
17
4 hours
18

Part 2:
The explanation is clear and accurate.

Part 3:
Ted: 3*$13 + 7*$16 = $151
Nancy: 3*10 + 7*$16 = $142
Nancy
6
8
10
12
14
16
18
20
Standards for Mathematical Practice
Makes sense and perseveres in solving problems.
Reasons abstractly and quantitatively.
Constructs viable arguments and critiques the reasoning of others.
Models with mathematics.
Uses appropriate tools strategically.
Attends to precision.
Looks for and makes use of structure.
Looks for and expresses regularity in repeated reasoning
NC DEPARTMENT OF PUBLIC INSTRUCTION
FOURTH GRADE
Formative Instructional and Assessment Tasks
Lawn Mowing Business
Ted and Nancy both mow lawns during the summer to earn money.
Ted charges $10 per lawn and $2 per hour.
Nancy charges $4 per lawn and $4 per hour.
Part 1:
Complete the table to show how much Ted and Nancy would each earn based on the
amount of time that it took to mow a lawn.
Ted
Nancy
½ hour
1 hour
1 and ½ hours
2 hours
2 and ½ hours
3 hours
3 and ½ hours
4 hours
Part 2:
Explain how you found the amount for both Ted and Nancy in the table.
Part 3:
Last week, Ted and Nancy each mowed 3 lawns that took 1 and ½ hours each, and 7
lawns that took 3 hours each. How much money did they each earn? Write an
equation to show your work.
NC DEPARTMENT OF PUBLIC INSTRUCTION
FOURTH GRADE