Unit 7, Lesson 11
A Bigger Piece
Grade 1
Activity 1
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- Work with a partner.
- Cut out the circles.
- Decide who will cut halves and who will cut fourths.
- Fold your circle into halves or fourths, and then cut it.
- Compare your pieces with your partner.
- What do you notice?
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Be ready to explain your thinking.
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- Repeat with the squares.
- Compare your pieces with your partner.
- What do you notice?
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Be ready to explain your thinking.
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Write 2 things you notice about your pieces.
Activity 2
Priya and Han share a roti.
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Priya says, “I want half of the roti because halves are bigger than fourths.”
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Han says, “I want a fourth of the roti because fourths are bigger than halves. I know because 4 is bigger than 2.”
Who do you agree with?
Show your thinking, using drawings, numbers or words.
Use the circle if it helps you.
Student Section Summary
We learned that circles and rectangles can be split into equal pieces.
- 2 equal pieces are called halves.
- 4 equal pieces are called fourths, or quarters.
A half of the square is shaded.
A fourth, or a quarter, of the circle is shaded.
2 halves are shaded.
4 fourths are shaded.