CH04-01 lesson

Equivalence of Fractions Learning Activity

A focused Grade 3 learning session for Equivalence of Fractions using visual models, worked examples, strategy guidance, and a short mastery check.

15
minutes
6
lesson parts
11
practice items
Learning goal

Students will explain fraction equivalence and compare fractions using visual models and number-line reasoning.

Student goal: I can explain when fractions are equivalent and compare their sizes.

concept

Learn the Idea

Equivalence of Fractions means using equal parts, number lines, and clear fraction language to describe parts of a whole.

  • Identify the whole before naming a fraction.
  • Make sure each part is equal in size.
  • Use a number line or model to show where the fraction belongs.
  • Explain whether two fractions have the same size or different sizes.
visual model

See the Math

Visual Model 1

Question: Look at the fraction bars. Which fraction is equivalent to \(\frac{1}{3}\)?

Grade 3 Equivalence of Fractions figure 1

  • A. \(\frac{1}{4}\)
  • B. \(\frac{2}{6}\)
  • C. \(\frac{2}{4}\)
  • D. \(\frac{1}{2}\)

Why it works: The shaded regions match. \(\frac{1}{3}\) and \(\frac{2}{6}\) are equivalent.

Answer: \(\frac{2}{6}\)

worked example

Follow a Worked Example

Example 1

Question: Look at the bars. Which statement is NOT true?

Grade 3 Equivalence of Fractions figure 3

  • A. The first and second are equivalent
  • B. The first bar shows \(\frac{1}{2}\)
  • C. All three show the same amount
  • D. The third bar is smaller
  1. The first and second bars are equivalent.
  2. But the third bar shows \(\frac{1}{3}\), which is larger than \(\frac{1}{2}\), so all three do NOT show the same amount.
  3. Answer C is false.

Answer: All three show the same amount

Example 2

Question: Look at the pies. Which statement is true?

Grade 3 Equivalence of Fractions figure 4

  • A. They show the same amount
  • B. The left pie is larger
  • C. The right pie is larger
  • D. They are not equal
  1. Both pies show the same shaded region. \(\frac{1}{4}\) and \(\frac{2}{8}\) are equivalent.

Answer: They show the same amount

real world

Connect It to a Real Situation

Problem 1

Question: Noah loses \(3\) of \(6\) marbles. What fraction did he lose in simplest form?

Why it works: \(\frac{3}{6}=\frac{1}{2}\).

Answer: \(\frac{1}{2}\)

strategy

Avoid Mistakes and Choose a Strategy

  • Counting unequal parts as if they were equal.
  • Forgetting that the denominator tells how many equal parts make the whole.
  • Comparing fractions without first checking the size of the whole.
  • Placing a fraction on a number line without counting equal intervals.
  • Draw the whole first, then divide it into equal parts.
  • Use number lines when the question asks about order or location.
  • Say the fraction out loud to connect numerator and denominator meanings.
  • Check whether the answer should be closer to 0, 1/2, or 1.
summary

Remember the Key Idea

Equivalence of Fractions becomes easier when students connect the question to a model, use clear steps, and explain why the answer fits.

GOLDEN RULE

Equal parts first, fraction name second.

Guided to independent practice

Solve before opening the answer

Use scratch paper. The explanation matters more than simply seeing whether the choice is correct.

warmup

2 questions
G3-C04-T01-Q001 About 1 min

Which fraction is equivalent to \(\frac{1}{2}\)?

  1. A \(\frac{1}{4}\)
  2. B \(\frac{2}{4}\)
  3. C \(\frac{2}{3}\)
  4. D \(\frac{1}{3}\)
Check answer and explanation

Answer B: \(\frac{2}{4}\)

\(\frac{1}{2}\) and \(\frac{2}{4}\) represent the same amount. Both show half of a whole.

G3-C04-T01-Q002 About 1 min

Look at the fraction bars. Which fraction is equivalent to \(\frac{1}{3}\)?

Equivalence of Fractions visual for G3-C04-T01-Q002
  1. A \(\frac{1}{4}\)
  2. B \(\frac{2}{6}\)
  3. C \(\frac{2}{4}\)
  4. D \(\frac{1}{2}\)
Check answer and explanation

Answer B: \(\frac{2}{6}\)

The shaded regions match. \(\frac{1}{3}\) and \(\frac{2}{6}\) are equivalent.

guided

1 question
G3-C04-T01-Q003 About 1 min

Which fraction is equivalent to \(\frac{2}{3}\)?

Equivalence of Fractions visual for G3-C04-T01-Q003
  1. A \(\frac{4}{6}\)
  2. B \(\frac{1}{3}\)
  3. C \(\frac{2}{4}\)
  4. D \(\frac{3}{6}\)
Check answer and explanation

Answer A: \(\frac{4}{6}\)

\(\frac{2}{3}\) and \(\frac{4}{6}\) represent the same amount. Both show two-thirds.

practice

5 questions
G3-C04-T01-Q004 About 1 min

Look at the bars. Which statement is NOT true?

Equivalence of Fractions visual for G3-C04-T01-Q004
  1. A The first and second are equivalent
  2. B The first bar shows \(\frac{1}{2}\)
  3. C All three show the same amount
  4. D The third bar is smaller
Check answer and explanation

Answer C: All three show the same amount

The first and second bars are equivalent. But the third bar shows \(\frac{1}{3}\), which is larger than \(\frac{1}{2}\), so all three do NOT show the same amount. Answer C is false.

G3-C04-T01-Q005 About 1 min

Look at the pies. Which statement is true?

Equivalence of Fractions visual for G3-C04-T01-Q005
  1. A They show the same amount
  2. B The left pie is larger
  3. C The right pie is larger
  4. D They are not equal
Check answer and explanation

Answer A: They show the same amount

Both pies show the same shaded region. \(\frac{1}{4}\) and \(\frac{2}{8}\) are equivalent.

G3-C04-T01-Q006 About 1 min

Which fraction is equivalent to \(\frac{3}{4}\)?

  1. A \(\frac{3}{8}\)
  2. B \(\frac{3}{6}\)
  3. C \(\frac{6}{8}\)
  4. D \(\frac{2}{4}\)
Check answer and explanation

Answer C: \(\frac{6}{8}\)

\(\frac{3}{4}\) and \(\frac{6}{8}\) both show three-fourths of a whole.

G3-C04-T01-Q007 About 1 min

Lily has 2 equal pieces of a sandwich. She eats 1 piece. What fraction did she eat?

  1. A \(\frac{1}{4}\)
  2. B \(\frac{2}{3}\)
  3. C \(\frac{1}{2}\)
  4. D \(\frac{1}{3}\)
Check answer and explanation

Answer C: \(\frac{1}{2}\)

Lily ate 1 out of 2 pieces, which is \(\frac{1}{2}\).

G3-C04-T01-Q008 About 1 min

Look at the number line. Which fraction equals \(\frac{2}{6}\)?

Equivalence of Fractions visual for G3-C04-T01-Q008
  1. A \(\frac{1}{4}\)
  2. B \(\frac{1}{3}\)
  3. C \(\frac{2}{3}\)
  4. D \(\frac{3}{6}\)
Check answer and explanation

Answer B: \(\frac{1}{3}\)

On the number line, \(\frac{2}{6}\) and \(\frac{1}{3}\) mark the same point.

exit

3 questions
G3-C04-T01-Q009 About 1 min

Which fraction is equivalent to \(\frac{1}{4}\)?

Equivalence of Fractions visual for G3-C04-T01-Q009
  1. A \(\frac{2}{8}\)
  2. B \(\frac{3}{8}\)
  3. C \(\frac{1}{3}\)
  4. D \(\frac{2}{4}\)
Check answer and explanation

Answer A: \(\frac{2}{8}\)

\(\frac{1}{4}\) and \(\frac{2}{8}\) both show one-quarter of a whole.

G3-C04-T01-Q010 About 1 min

Look at the bars. Are \(\frac{1}{2}\) and \(\frac{2}{4}\) equivalent?

Equivalence of Fractions visual for G3-C04-T01-Q010
  1. A Yes, they are equivalent
  2. B No, they are not equivalent
  3. C The first is larger
  4. D The second is larger
Check answer and explanation

Answer A: Yes, they are equivalent

Both bars show the same amount shaded. \(\frac{1}{2}\) and \(\frac{2}{4}\) are equal.

G3-C04-T01-Q011 About 1 min

Sam eats 1 slice from a 3-slice pizza. Which fraction is equivalent to what he ate?

Equivalence of Fractions visual for G3-C04-T01-Q011
  1. A \(\frac{2}{6}\)
  2. B \(\frac{1}{2}\)
  3. C \(\frac{1}{4}\)
  4. D \(\frac{2}{3}\)
Check answer and explanation

Answer A: \(\frac{2}{6}\)

Sam ate \(\frac{1}{3}\), which is equivalent to \(\frac{2}{6}\).

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