Equal Shares: Making Fair Pieces!

Math Grades 1st Grade 3:04 Video
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Lesson Description

Learn how to divide circles and rectangles into equal parts like halves, fourths, and thirds! Discover what it means for everyone to get a fair share.

Video Resource

Equal parts of circles and rectangles | Geometry | Early Math | Khan Academy

Khan Academy

Duration: 3:04
Watch on YouTube

Key Concepts

  • Equal Parts
  • Halves, Fourths, Thirds
  • Shapes (Circles and Rectangles)

Learning Objectives

  • Students will be able to identify shapes divided into equal parts.
  • Students will be able to divide circles and rectangles into halves, fourths, and thirds.
  • Students will be able to use the terms halves, fourths, and thirds to describe equal shares of a shape.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students if they have ever shared a cookie or pizza with a friend. Ask them how they made sure everyone got a fair piece. Introduce the idea of 'equal parts' and explain that in this lesson, they'll learn how to make fair pieces of shapes.
  • Video Viewing (7 mins)
    Watch the Khan Academy video 'Equal parts of circles and rectangles'. Encourage students to pay attention to how the shapes are divided and the words used to describe the parts.
  • Guided Practice (10 mins)
    After the video, draw circles and rectangles on the board. Guide students in dividing them into halves, fourths, and thirds. Use clear language like, 'We need to divide this circle into two equal parts. What do we call each part?' and 'How many equal pieces make up the whole rectangle when we divide it into fourths?'
  • Independent Practice (10 mins)
    Provide students with worksheets that have pre-drawn circles and rectangles. Ask them to divide some shapes into halves, some into fourths, and some into thirds. They should also label each part with the correct term (half, fourth, third).
  • Wrap-up (3 mins)
    Review the key concepts of the lesson. Ask students to give examples of when they might need to divide something into equal parts in their daily lives.

Interactive Exercises

  • Shape Sorting
    Provide students with cut-out shapes (circles and rectangles) that are already divided into halves, fourths, and thirds, as well as some that are not divided equally. Have them sort the shapes into categories: 'Halves', 'Fourths', 'Thirds', and 'Not Equal Parts'.

Discussion Questions

  • What does it mean for something to be divided into equal parts?
  • Can you think of something you share with your family or friends? How do you make sure everyone gets a fair share?

Skills Developed

  • Shape Recognition
  • Understanding Fractions (basic)
  • Problem-solving
  • Following Instructions

Multiple Choice Questions

Question 1:

Which shape is divided into two equal parts?

Correct Answer: A circle with 2 equal parts

Question 2:

What do we call one of two equal parts?

Correct Answer: A half

Question 3:

Which shape is divided into fourths?

Correct Answer: A rectangle with 4 equal parts

Question 4:

How many equal parts are in a third?

Correct Answer: Three

Question 5:

Which of these shapes is NOT divided into equal parts?

Correct Answer: A rectangle with 3 equal parts

Question 6:

If you cut a pizza into four equal pieces, what are they called?

Correct Answer: Fourths

Question 7:

Which word describes two equal parts of a shape?

Correct Answer: Halves

Question 8:

How many equal parts make up a whole when divided into thirds?

Correct Answer: 3

Question 9:

Which shape shows halves?

Correct Answer: A shape cut into 2 equal pieces

Question 10:

What are four equal pieces of a shape called?

Correct Answer: Fourths

Fill in the Blank Questions

Question 1:

When a shape is divided into two equal parts, it is divided into ________.

Correct Answer: halves

Question 2:

Four equal parts of a shape are called ________.

Correct Answer: fourths

Question 3:

Three equal parts of a shape are called ________.

Correct Answer: thirds

Question 4:

A circle divided into ________ equal parts has halves.

Correct Answer: two

Question 5:

A rectangle divided into ________ equal parts has fourths.

Correct Answer: four

Question 6:

If you share a cookie and cut it into 2 equal pieces, each piece is a ________.

Correct Answer: half

Question 7:

A pizza cut into 3 equal slices is divided into ________.

Correct Answer: thirds

Question 8:

Cutting a cake into four equal pieces makes ________.

Correct Answer: fourths

Question 9:

A whole shape is made of two ________.

Correct Answer: halves

Question 10:

If you have ________ equal pieces, you have divided something into thirds.

Correct Answer: three

Educational Standards

CCSS.Math.Content.1.G.A.3:Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Teaching Materials

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