Transcript Math-5.19x

Module 5 Lesson 19
Understand distance and position on the number line as strategies
for comparing fractions.
Express Fractions as Whole Numbers
Sprint
Draw my number line on your boards
or in your notebooks.
Estimate to label 1third on the interval from 0 to 1.
Thumbs up when you’re done.
3/3
0
1
2
Write 3 thirds on your number line. Label the point as a fraction.
Cross your arms when you’re done.
3
Write 6/3 on the number line. Label
the point as a fraction.
0
3/3
6/3
1
2
3
Write 9/3 on the number line. Label
the point as a fraction.
0
3/3
6/3
9/3
1
2
3
Write 4/3 on the number line. Label
the point as a fraction.
3/3
0
1
4/3
6/3
9/3
2
3
Write 7/3 on the number line. Label
the point as a fraction.
3/3
0
1
4/3
6/3
2
7/3
9/3
3
Write 2/3 on the number line. Label
the point as a fraction.
2/3
0
3/3
1
4/3
6/3
2
7/3
9/3
3
Write 8/3 on the number line. Label
the point as a fraction.
2/3
0
3/3
1
4/3
6/3
2
7/3
8/3
9/3
3
Problem of the Day
HINT: Line up your papers like this:
Draw 2 same-sized rectangles on
your boards, and partition both in 4
equal parts. Shade your top
rectangle to show 1 fourth, and
shade the bottom to show 3 copies
of 1 fourth.
Thumbs up when you’re done.
Compare the models. Which fraction
is larger? How do you know?
Use your rectangles to measure and draw a number line from 0 to
1. Partition into fourths. Label the wholes and fractions on your
number line.
0
or
0/4
1/4
2/4
3/4
4/4
or
1
Think back to our Problem of the Day. What were we trying to find?
The length of the page from the edge of each hole?
OR were we simply finding the location of each hole?
Remember the pepper problem from yesterday? What were
we comparing? The length of the peppers or the location of
the peppers?
Third grade students are growing peppers. The student with
the longest pepper wins the Green Thumb award.
Jackson’s pepper measured 3 inches long. Drew’s
measured 10/4 inches long. Who won the award?
Draw a number line to help prove your answer
Talk to a partner. What is the same
and what is different about the ways
we solved these problems?
How do the distance and position
relate to each other when we
compare fractions on the number
line?
You use the distance from 0 to find the fractions placement.
You use the placement to find the distance.
So they’re both comparing. The part you focus on just depends on what
you’re trying to find out.
Problem Set!