Unit 4 Lesson 1

Unit 4 Lesson 1

Students will learn how to develop a conceptual understanding of unit fractions and how they are used to build other fractions.

Supplies today:

• Workbook

• pencil

• scissors

What are fractions?

• What do you know about fractions as shapes?

• What names of fractions do you remember?

• How is a fraction different from a whole number?

• https://www.youtube.com/watch?v=lTce7f6KGE0&t=21s

Fraction Rectangles

• Cut out the four smaller rectangles along the dotted lines.

• Do the four rectangles have equal areas?

• How can you be sure that the areas are equal?

Page 243

• Make the shape on #1

• Do your rectangles all have the same area?

• How many parts are there?

• What part of the whole is the red rectangle? What unit fraction is the red rectangle?

Page 244

• Look at #4. Do the triangles all have the same area?

• How many parts are there?

• What part of the rectangle is the blue triangle?

• What unit fraction is the blue triangle?

Page 244

• Look at #5. How many parts are in this shape?

• What part if tge shape is the blue triangle?

• What unit fraction is the blue triangle?

Multiple Choice

What is the numerator?

• Top number: it tells how many equal parts in a fraction.

• Bottom number: it tells how many equal parts in the whole.

Multiple Choice

What is the denominator?

• Top number: tell how many equal parts in the fraction.

• Bottom number: it tells how many equal parts in the whole.

Multiple Choice

What is a unit fraction?

• Has a number other than 1 in the numerator.

• The numerator is 1. 1 Part of the whole.

Multiple Choice

As the whole is divided equally into to more parts, what happens to the size of the unit fraction?

• They get bigger

• They get smaller

Multiple Choice

Name the fraction.

• 3/4

• 1/4

Multiple Choice

Name this fraction.

• 2/6

• 4/2

Multiple Choice

Name the fraction.

• 2/3

• 1/3