Fraction Multiplication Techniques and Concepts

In this video, Mr. War introduces a lesson on fraction multiplication, focusing on using an area model to solve real-world problems. The lesson begins with a problem involving Sasha's scarf, where students learn to find a fraction of a fraction. Mr. War explains both the visual and algorithmic approaches to multiplying fractions, emphasizing the importance of understanding the process. The video also covers the identity property of multiplication and encourages students to engage in mathematical reasoning and critique. The lesson concludes with motivational words, encouraging students to enjoy learning math.

What is the essential question of the lesson?

• How do you divide fractions?

• How do you multiply fractions?

• How do you add fractions?

• How do you subtract fractions?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

If Sasha has 3/5 of a scarf left and finishes 1/2 of that today, how much of the scarf will she knit today?

• 1/5

• 3/10

• 1/2

• 2/5

Tags

CCSS.5.NF.B.6

What color does yellow and blue make when combined in the area model?

• Green

• Red

• Orange

• Purple

Tags

CCSS.2.OA.A.1

What is the product of the numerators when multiplying 1/2 and 3/5?

• 5

• 3

• 2

• 1

Tags

CCSS.5.NF.B.6

What is the product of the denominators when multiplying 1/2 and 3/5?

• 2

• 10

• 15

• 5

Tags

CCSS.5.NF.B.6

How can you write a whole number as a fraction?

• With a denominator of one

• With a numerator of zero

• With a denominator of zero

• With a numerator of one

Tags

CCSS.3.NF.A.3C

What is the simplest form of 20/12?

• 10/6

• 4/3

• 2/1

• 5/3

What is the identity property of multiplication?

• Any number multiplied by one is itself

• Any number multiplied by zero is zero

• Any number added to zero is itself

• Any number divided by one is itself

Tags

CCSS.3.OA.B.5

What does it mean to evaluate in math?

• To add

• To subtract

• To divide

• To solve

What is the result of multiplying any fraction by a fraction with the same numerator and denominator?

• Zero

• One

• The fraction itself

• The reciprocal of the fraction

Tags

CCSS.5.NF.B.5B