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Unit 8, Lesson 10

Partition circles and rectangles into equal parts, and describe those parts as halves, thirds, or fourths

EngageNY 60 min(s)Support for English Language Learners

In this lesson, students build upon their new knowledge by assembling a whole out of fractional parts. Given a circle made of two parts, students see that the whole circle is composed of two halves. Similarly, they see that a whole rectangle cut into thirds is made of three thirds, or that a square cut into fourths is made of four fourths.

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Other lessons from Unit 8 in Grade 2 by EngageNY

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Unit 8, Lesson 9

Partition circles and rectangles into equal parts, and describe those parts as halves, ...

60 min(s)

Next Lesson

Unit 8, Lesson 11

Describe a whole by the number of equal parts including 2 halves, 3 thirds, and 4 fourths

60 min(s)

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Unit 1, Lesson 12

Fractions of Shapes, Day 1 (Halves and Fourths)

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1 Content Standard is aligned with this lesson

2.G.A.3

Major StandardsSupporting StandardsAdditional Standards

Standard 2.G.A.3

Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.

Part of Additional Cluster 2.G.A

1 Math Practice Standard is aligned with this lesson

Standard MP.1

Make sense of problems and persevere in solving them.

Prerequisites for 2.G.A.3

1st Grade

1.G.A.3

Partition circles and rectangles into two and four equal shares, describe the shares using the words "halves", "fourths", and "quarters", and use the phrases "half of", "fourth of", and "quarter of". Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

2nd Grade

2.G.A.2

Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Upcoming Standards for 2.G.A.3

3rd Grade

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.

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