Copyright © Swun Math Grade 6 Unit 2 Lesson 17 T SJ
MPs
Applied MP
* Embedded MP
Applying Rational Numbers
Math Task
Grade 6 · Unit 2 · Lesson 17
MC: 6.NS.7cd
1 2 3 4 5 6 7 8
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Recap today’s lesson with one or more of the
following questions:

How did using a visual model help you to
solve the problem?

How did using rational numbers help you to
solve the problem?

What would you do differently to solve the
problem correctly in the future?
Apply and demonstrate your
understanding of rational numbers
in real world contexts.

Problem of the Day
Objective:
Instructions Closure
Copyright © Swun Math Grade 6 Unit 2 Lesson 17 T SJ
Name: ____________________________
Date: ______________________________
Math Task
Unit 2 Lesson 17: Applying Rational Numbers
Directions: Read and follow directions.
1. A dock is like a table sitting in the water. Pilings are like the legs of
the table. They are driven into the ground or rock beneath the water
and support the dock.
Peter was fishing for trout off of the dock behind
his grandpa’s house. If the water was 13.5 feet
deep and the dock was 2.5 feet above the water
level, how long must the pilings be?
Use the number line and absolute values to find
your answer. Show your work.
0
Copyright © Swun Math Grade 6 Unit 2 Lesson 17 T SJ
2. The lake behind Peter’s grandpa’s house was well stocked with trout.
Two fish were swimming near the dock where Peter was fishing. One
was 3
1
/
2
feet below the water level, and another was 1
1
/
2
feet below the
water level.
a. Use the number line and mark these two depths.
b. Write an inequality that
compares the depths of the two
fish.
c. Find the absolute value of both
depths and determine which fish
is at the shallowest level.
Explain what this means.
d. Once, farther out in the lake,
Peter saw a trout leap out of the
water! He estimated that the fish
leaped 3
1
/
2
feet above the surface
of the water. Mark this elevation
on your number line.
e. Write an inequality that compares the height of the fish’s leap with
the depth of the deepest swimming fish near the dock.
f. In problem e, what is the relationship of both numbers to zero?
0
Math Task
Unit 2 Lesson 17: Applying Rational Numbers
Directions: Read and follow directions.
Copyright © Swun Math Grade 6 Unit 2 Lesson 17 T SJ
Notes