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Number Trail Grade 3 / Week 07 / Tuesday
2/6
Week 07 · Fractions are numbers

Tuesday

Many parts: a/b
// Unit fractions, a/b and the number line
⏱ about 15 min

Tuesday: Many parts: a/b

Riley lays out his strip, now cut into 4 equal pieces.

"One piece goes to Hazel, one to Lucy and one to Donnie," he says.

"What fraction of the strip did I give away?"

Bennie counts the pieces. "One fourth, two fourths, three fourths."

"You gave away 3/4 of the strip, Riley."

Riley holds up the last piece. "And 1/4 is left for me!"

Learn it: count the unit fractions

Each piece is 1/4 of the strip.

3 pieces of size 1/4 make 3/4.

A bar cut into four equal parts, three shaded

In 3/4, the 4 tells the size of each part: fourths.

The 3 counts how many fourths we have.

Count them: one fourth, two fourths, three fourths.

A bar cut into eight equal parts, five shaded

This strip has 8 equal parts with 5 shaded. That is 5/8.

WHAT FRACTION IS SHADED?
  • Read the question.
  • Tap your answer.
A bar cut into four equal parts, three shadedWhat fraction of the bar is shaded?
A bar cut into eight equal parts, five shadedWhat fraction of the bar is shaded?
A bar cut into six equal parts, five shadedWhat fraction of the bar is shaded?
A bar cut into three equal parts, two shadedWhat fraction of the bar is shaded?
A bar cut into eight equal parts, three shadedWhat fraction of the bar is shaded?
COUNT THE PARTS
  • Read the question.
  • Tap your answer.
How many parts of size 1/4 make 3/4?
How many parts of size 1/6 make 5/6?
How many parts of size 1/8 make 7/8?
What fraction is 2 parts of size 1/3?
What fraction is 5 parts of size 1/8?
TOP AND BOTTOM
  • Read the question.
  • Tap your answer.
What is the numerator of 3/8?
What is the denominator of 5/6?
What is the denominator of 2/3?
What is the numerator of 7/8?
MAKE 3/4
  • Think about how Riley made 3/4.
  • Tap the steps in order.
1First
2Next
3Then
4Last
SentenceTrue or false?
3/4 is 3 parts of size 1/4.?
5/6 has 6 shaded parts.?
In 2/3, each part is one third.?
4/8 is 4 parts of size 1/8.?
WHY THIS EXERCISE5/6 has 5 parts of size 1/6, not 6.
Try it
Fold a paper strip into 8 equal parts.
Color 5 parts.
Count out loud: one eighth, two eighths, up to five eighths.
Write 5/8 on your strip.
Draw a strip with 6 equal parts. Shade 4 parts and write the fraction.

Wonderful! Tomorrow fractions take their places on the number line.

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