MODULE 5 LESSON 13 Identify a shaded fractional part in different ways depending on the designation of the whole.

Skip-Count by Fourths on a Clock

Skip-Count by Fourths on a Clock (quarters and halves) quarter past Hour quarter ‘til half past

Divsion Fill in the blanks: 4 ÷ 2 = _____ 6 ÷ 2 = _____6 ÷ 3 = _____ 8 ÷ 2 = _____ 8 ÷ 4 = ______10 ÷ 2 = _____ 10 ÷ 5 = _____ 12 ÷ 2 = ______12 ÷ 6 = _____ 12 ÷ 4 = _____ 12 ÷ 3 = ______18 ÷ 3 = _____

Draw a Whole How many parts do I need to make a whole? I need 3 parts to make a whole.

Draw a Whole How many parts do I need to make a whole? I need 5 parts to make a whole. 1/5

Draw a Whole How many parts do I need to make a whole? I need 4 parts to make a whole.

Draw a Whole How many parts do I need to make a whole? I need 2 parts to make a whole. 1/2

Problem of the Day Davis wants to build a wall using 9 Lego bricks. What fraction of the wall does 1 Lego brick represent? Show three different ways Davis could make his wall. A Lego brick is 1/9 of the wall.

Concept Development I have an index card and I fold it to make 4 equal units. What fraction is each unit?. 1/4 What is the whole? The Index card is the whole.

Concept Development I am going to change things and make half the card the whole unit. What fraction is the shaded portion now? Why did the unit fraction change? Half an index card is a whole. 1/2 Changing the whole changed the unit fraction. The portion that was ¼ of the complete card is ½ of the new, smaller whole.

Concept Development This time the whole is the entire rectangle. How can I figure out what fraction is shaded? I could draw lines to partition the rectangle I could fold the rectangle I can make a visual estimate What fraction do you think is shaded? 1/3

Concept Development This time the outlined rectangles are a whole. What fraction is shaded now? 1/32/33/34/3 Why is it important to know the whole? Knowing the whole helps us decide … o The fractional unit o How many equal pieces we have

Concept Development For Kyle’s birthday his mother bought cakes to share with his class. Talk to a partner. Who is right? When she picked up the 2 cake pans at the end of the day she said, “Wow, your class ate ¾ of the cake!” Kyle said, “No Mom. We ate 6/4 of the cake.”

Concept Development The fractional unit depends on what you look at as the whole. Kyle’s Mom looked at both cakes as the whole.

Concept Development The fractional unit depend on what you look at as the whole. Kyle looked at the whole as one cake divided into four equal pieces.

Problem Set Just keep solving!