Understanding Ratios and Fractions

This video tutorial covers lesson 13 of module 5 for grade 3, focusing on understanding fractions through shapes and practical exercises. It begins with an introduction and setup instructions, followed by explanations of fractions using shapes. The lesson progresses to dividing shapes into equal parts and solving a problem involving towel rack lengths. Finally, it includes an exercise on string lengths and fractions, reinforcing the concepts taught.

Why is it important to write your name at the beginning of the lesson?

• To practice writing

• To ensure you remember it later

• To start the lesson

• To make the teacher happy

What does the shaded part of a circle represent if the circle is a whole?

• One fourth

• One fifth

• One third

• One half

How should you divide a shape to show halves?

• From the side

• From the center

• From the bottom

• From the top

If a rectangle is divided into three equal parts, what fraction does each part represent?

• One half

• One third

• One fifth

• One fourth

What type of triangle is used to divide into equal parts?

• Right

• Scalene

• Equilateral

• Isosceles

How many equal parts are needed to divide a shape into fifths?

• Five

• Four

• Three

• Six

Which towel rack is about half the length of towel rack C?

• Towel rack C

• Towel rack A

• Towel rack D

• Towel rack B

If towel rack C is 6 feet long, how long is towel rack B?

• 4 feet

• 5 feet

• 2 feet

• 3 feet

How many towel rack A's equal the length of towel rack C?

• Four

• Three

• Two

• One

What is the relationship between towel rack B and C?

• B is one third of C

• B is half of C

• B is equal to C

• B is twice C