Download Grade: Third Lesson 14 Understand What a Fraction Is Week: 15

Grade: Third
Lesson 14 Understand What a Fraction Is
Week: 15
Learning Targets
Essential Question:
What is a fraction? How does
knowing the number of
fractional parts in a whole help
you understand and think about
the size of each fractional
parts?
Big Idea:
Fractional parts are equal
shares or equal-sized partitions
of a whole. Unit fractions can
be composed to represent a
larger share of a whole and
decomposed to represent a
smaller share of the whole.
EduTools
Task Arc: Understanding
Fractions as Numbers
http://www.edutoolbox.org/sy
stem/files/rasp_file/3rdGradeT
askArcreduced.pdf
Task 2: Shares of Clay pp.29-31
Number Talks
Standard: 3.NF.A.1
Understand a fraction 1/b as
the quantity formed by 1 part
when a whole is partitioned
into b equal parts; understand
a fraction a/b as the quantity
formed by a parts of size 1/b.
Math Practices:
2,3,4,&6
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Vocabulary
composed
decomposed
denominator
equal parts
fraction
numerator
one-eighth; 1/8
one-fourth; 1/4
one-half; 1/2
one-sixth; 1/6
one-third; 1/3
partitioned
unit fraction
whole
This standard refers to the sharing of a whole being partitioned or split.
Fraction models in third grade include area (parts of a whole) models (circles,
rectangles, squares) and number lines. In 3.NF.1 students should focus on the
concept that a fraction is made up (composed) of many pieces of a unit
fraction, which has a numerator of 1. For example, the fraction 3/5 is
composed of 3 pieces that each have a size of 1/5.
https://grade3commoncoremath.wikispaces.hcpss.org/3.NF.1
Fun with Pattern Block Fractions
http://illuminations.nctm.org/LessonDetail.aspx?ID=U113
K-5 Math Teaching Resources
http://http://www.k-5mathteachingresources.com/3rd-grade-numberThird Grade Classroom pp.316- activities.html
Books by Sherry Parrish
323
Student Thinking & Number
Talks in the 3-5 Classroom
pp.157-286
Illustrative Mathematics
Naming the whole for a fraction
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Students must understand how a
fraction a/b can be decomposed into 1/b
a times (e.g., 4/6 can be decomposed into 4
pieces, each with a size of 1/6) through the
use of models or equations.
Students must explain how a
fraction 1/b a times can be composed
into a/b (e.g., 1/8 + 1/8 + 1/8 will compose
to create 3/8) through the use of models or
equations.
Strategies:
● Understand Concept of a Whole (2/2)
● Understand Equal Parts
● Numerator and Denominator
● Use Pattern Blocks to Show
Wholes/Parts
● Use Paper Plates to Show Wholes/Parts
3-ACT
None-Applicable
Fraction Visualizing
Naming Fractions
Activities
Name the Fraction
Games
Fraction Barrier Game Grid
Fraction Roll, Shake, and
Dump
Equal Parts on the
Geoboard
Fractions Basics
Exploring Fraction Kits
Illuminations Concentration
Finding Fractions of a
Group
VK Fractions
Find One Half of a Group
Jelly Golf
Fraction Fling
Give Me Half
Bowling For Fractions
Books
Additional Support
Eating Fractions
McMillan
What is the Whole
Give Me Half
Stuart Murphy
Varnelle's Introduction to Fractions
Parts of a Whole
Only One
Marc Harshman
Hershey's Milk Chocolate Fractions
Jerry Pallata
Picture Pie
Ed Emberley
Fraction Action
Loreen Leedy
Contributors: Quinena Bell, Kimberly Osborne, Christa Campbell, Misty Dobbs, Sia Phillips, Caleb Jones, Stephanie Turner
Name:
Date:
Fractions
Multiplication/Division
Addition/Subtraction
Represent the fractions ½, ¼, and
2/4 on a number line that begins
with 0 and ends with 1. Explain
your reasoning.
A teacher wants to place her 24
students into equal groups. How many
different ways can she arrange the
groups?
I had $1.00. I bought two pencils that each cost $
0.28. How much did the pencils cost? How much
change did I receive from $1.00?
Elapsed Time
Missing Addend
Math Riddle
Mr. Smith arrived at work at 9:15
am. If he spent 35 minutes driving
to work, what time did he leave
work? Explain your thinking.
207 + ____= 500
Commutative Property
Perimeter
The product of two numbers is 24 and their sum
is less than 15. What might the two numbers be?
Writing in Math
Sarah says the product of 2 x 3 x 4 is How many different rectangles can you
less than the product of 4 x 3 x 2. Is
draw with a perimeter of 16 cm?
she correct? How do you know?
I solved a division story and got an answer of 7.
What might the number story have been?
AUTHOR: HANNELORE DICKERSON
15