Grade 3-5 · Common Core 3.NF.A.1 · 3.NF.A.3

Fraction Strips

Visual bars that show exactly how big a fraction is. Drag strips onto the board to compare fractions, find equivalents, and see why 1/2 = 2/4 = 3/6 with your own eyes.

Grade 3-5Common Core 3.NF.A.1InteractivePrintableNo loginFree

Concept

What are fraction strips?

Fraction strips, also called fraction bars, are equal-length rectangles divided into equal parts. Each strip represents one whole, cut into a different number of pieces. Because all strips are the same length, you can line them up to compare fractions directly.

1 whole

1

1/2

1/21/2

1/4

1/41/41/41/4

1/8

1/81/81/81/81/81/81/81/8
All strips are the same length = one whole. Smaller pieces have larger denominators.

Tool

Interactive Fraction Strips

Drag strips on the board. Double-click a strip to choose how many pieces are shaded.

Strip palette

1/21/2
1/2×
1/41/41/41/4
2/4×
1/61/61/61/61/61/6
3/6×
==

Activities

Try these activities

Step-by-step tasks that use the tool above to discover fraction rules.

EasyFind Equivalent Fractions

Goal: Discover which fractions are equal to 1/2.

  1. Click Try it to load the strips onto the board.
  2. Line up the left edges and adjust shaded pieces if needed.
  3. Read the symbol the tool shows between aligned strips.
You discovered: 1/2 = 2/4 = 3/6 = 4/8. These are called equivalent fractions. Learn more.
EasyCompare Same Denominator

Goal: See why 3/8 > 2/8 by looking.

  1. Click Try it to load the strips onto the board.
  2. Line up the left edges and adjust shaded pieces if needed.
  3. Read the symbol the tool shows between aligned strips.
You discovered: 3/8 > 2/8. Same denominator means same piece size. Learn more.
MediumCompare Different Denominators

Goal: Which is bigger, 2/3 or 3/4?

  1. Click Try it to load the strips onto the board.
  2. Line up the left edges and adjust shaded pieces if needed.
  3. Read the symbol the tool shows between aligned strips.
You discovered: 3/4 > 2/3. Line up the left edges before comparing. Learn more.
MediumBuild a Mixed Number

Goal: Show 1 3/4 using fraction strips.

  1. Click Try it to load the strips onto the board.
  2. Line up the left edges and adjust shaded pieces if needed.
  3. Read the symbol the tool shows between aligned strips.
You discovered: 1 whole + 3/4 = 1 3/4. A mixed number is a whole plus a fraction. Learn more.

Read strips

How to read a fraction strip

The whole strip = 1

Every strip represents one whole. Four fourths together make 4/4 = 1.

1/41/41/41/4
1/41/41/41/4

Bigger denominator = smaller pieces

Each 1/8 piece is exactly half the size of each 1/4 piece.

1/41/41/41/4
1/81/81/81/81/81/81/81/8

Line up left edges

The fraction whose shaded part reaches further right is larger.

1/31/31/3
1/41/41/41/4

Practice

Quick check

Which is larger: 3/4 or 5/8?

How many 1/6 pieces equal 1/2?

A strip is divided into 10 equal parts. 7 parts are shaded. Write the fraction.

Related

More fraction tools