Lesson 13 Application Problem
Davis wants to make a picture using 9 square tiles. What fraction of the picture does 1 tile represent? Draw 3 different ways Davis could make his picture.
Lesson 13 Concept Development
Fold your index card to make 4 equal units. Shade and label the first unit.
Each part is equal to what fraction of the whole? 1 fourth.
What is the whole? The index card.
Take a black marker and trace the outside of your card to show what is the whole. 1 card is 1 whole.
Flip your index card over so you cannot see the fraction you wrote. The new whole is half of the card. Outline it with marker. Use your pencil to shade the same amount of space you shaded on the other side.
How would you label the shaded amount on this side of the card? The shaded part is 1 half. I see the whole. The shaded part is just half of that.
Changing the whole changed the unit fraction that we use to describe the shaded part.
What was 1 fourth of the whole card is 1 half of the new, smaller whole. because the new whole is different.
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