Grade 3 Unit 5
Lesson 4: Build Fractions from Unit Fractions
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 5
Lesson 4: Build Fractions from Unit Fractions
CC BY 2021 Illustrative Mathematics®
Find the value of each expression mentally.
3 x 3
7 x 3
10 x 3
3 x 17
The goal of the game is to be the first to build 2 secret fractions with unit fractions.
Make two stacks: one for secret fractions and one for unit fractions. Place all cards face down.
Each player draws 2 secret fraction cards. These are the fractions you are trying to make with your unit fractions.
On your turn, you can make one of these moves:
Pick up 1 unit fraction card.
Trade both of your secret fractions for 2 new secret fractions from the stack.
4. When you have enough unit fractions to make one of your secret fractions, shade your gameboard to represent your secret fraction. Then, pick a new secret fraction.
5. The first player to make 2 secret fractions wins.
When you have enough unit fractions to make one of your secret fractions, shade your gameboard to represent your secret fraction. Then, pick a new secret fraction.
Here are four situations about playing Pilolo and four diagrams. Each diagram represents the length of a street where the game is played.
Represent each situation on a diagram. Be prepared to explain your reasoning.
Explain your reasoning.
This strip represents 1 whole. Partition the diagram and shade it to represent
A student walks
the length of the street and hides a rock.
A student walks
the length of the street and hides a penny.
Explain your reasoning.
A student walks
the length of the street and hides a stick.
Explain your reasoning.
A student walks
the length of the street and hides a penny.
Explain your reasoning.
This diagram represents the location of a hidden stick.
About what fraction of the length of the street did the student walk to hide it?
Explain how you know.
