Lesson 2

Circle Pieces: Red, Pink, Yellow, Blue

Est. Class Sessions: 3
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Mathematical Standards

3.NF.A
Develop understanding of fractions as numbers. (3.NF.A.1, 3.NF.A.2)
3.G.A
Reason with shapes and their attributes. (3.G.A.2)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make sense of structure.

Students explore circle pieces used to represent fractions and develop fraction concepts.

Content in this Lesson

  • Representing fractions using circle pieces [E1].
  • Representing fractions using words and numbers [E2].
  • Partitioning shapes into fractional parts [E6].
  • Identifying the unit whole when given a fractional part of the whole [E7].
  • Recognizing that fractional parts of a unit whole must be of equal size [E3].
  • Recognizing that the same fractional parts of different-size wholes are not equal [E4].
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Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Guide  
Student Activity Book    

Teacher Resources

 Teacher Guide - digital    

Supplies for Students

Kid Fractions Homework section from Lesson 1 (Student Guide) Page 248
fraction circle pieces: red, pink, yellow, blue
resealable plastic bag (optional)

Materials for the Teacher

Display set of fraction circle pieces
Display of Red, Pink, Yellow, and Blue Pieces Master (Teacher Guide)
Display of Pizza Delivery Master (Teacher Guide)
Display of Grid Squares Master (Teacher Guide)
Unit 9 Assessment Record
chart paper

Materials Preparation

Prepare Sets of Fraction Circle Pieces. In Lessons 2 and 3, students will use pieces from the fraction circle sets. In Lesson 2, they will use the red, pink, yellow, and blue pieces. See Figure 1. In Lesson 3, they will use the red, pink, orange, and aqua pieces. Find the pieces that are needed for both lessons and place them in a resealable plastic bag. The remaining pieces will not be used in third grade. Before each lesson, ask students to take out the pieces that they will need for that lesson and put away the remaining pieces.

Figure 1
Figure 1: Fraction circle pieces as shown in teacher and student materials

Make a Fraction Names Chart for Display. Draw the blank table shown in Figure 2 on chart paper. During the lesson, students will write a list of fraction names as words.

Figure 2
Figure 2: Blank chart for fraction names

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed
Circle Pieces: Red, Pink, Yellow, Blue
Check-In: Questions 16–20
Student Guide
Page 252 and corresponding
Feedback Box
Teacher Guide - digital
E4.
Recognize that the same fractional parts of different-size unit wholes are not equal.
E7.
Identify the unit whole when given a fractional part of a whole.
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.

Fractions in Shapes
with Feedback Box
Student Activity Book
Pages 335–337
E1.
Represent fractions using objects, area models (e.g., circle pieces, fraction strips, drawings) and number lines.
E2.
Use words and numbers to name fractions.
E3.
Recognize that fractional parts of a unit whole may be different shapes but must be the same size.
E5.
Identify a fractional part of a set.
E6.
Partition shapes by a given unit fraction.
E7.
Identify the unit whole when given a fractional part of a whole.
  

DPP Item H
Strategies for 3s
Teacher Guide - digital
E11.
Demonstrate fluency with the multiplication facts for the 2s and 3s.