Length
30-40 minutes
Curriculum Standards
- CCSS.MATH.CONTENT.5.NF.B.4
Apply and extend previous understandings of multiplication to multiply a fraction or whole number by a fraction.
- CCSS.MATH.CONTENT.5.NF.B.6
Solve real-world problems involving multiplication of fractions and mixed numbers.
Instructions
- Ask students a series of simple multiplication problems (2 * 2, 3 * 4, etc.).
- Then ask them to multiply a whole number by 1/2 (4 * 1/2). Ask them whether the whole number was increased or decreased in value?
- Ask your students to guess: if two fractions were to be multiplied, what would happen? Explain to them that today's lesson will answer that question.
- Show the Study.com video lesson Multiplying Fractions and Mixed Numbers, stopping it at the following time stamps:
- 3:05 - Have the students work out the example problem given by the video. Then restart the video to see if they got it right.
- 5:25 - Ask students to work out the math problem given in the video. Then resume the video to see if the students answered correctly.
- 6:25 - Students will work out the math problem given in the video. Then resume the video to see how the students performed.
- Following the completion of the video, divide the class into teams and give them a worksheet of 10 sample problems. For each question that the team gets correct, they get 1/10 of a benefit. Depending on your school policies, it could be extra recess time, free reading time, more time to talk at lunch, or even extra credit on a homework assignment.
