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# Multiplying Bigger Numbers

Media Type:
Video

Running Time: 2m 21s
Size: 6.8 MB

or

Source: Cyberchase: "Send in the Clones"

### Collection Developed by:

Collection Credits

### Collection Funded by:

Funding for the VITAL/Ready to Teach collection was secured through the United States Department of Education under the Ready to Teach Program.

In this video segment from Cyberchase, every time Delete sneezes he creates three clones of himself. The CyberSquad uses their knowledge of multiplication to figure out how many clones exist after Delete sneezes 103 times.

Connections

TERC (2006)
Things That Come in Groups
Investigation 1, Sessions 1-4: pp. 2-19
Investigation 2, Sessions 1-6: pp. 20-39
Investigation 3, Sessions 1-5: pp. 40-55

Teaching Tips

Here are some Frame, Focus and Follow-up suggestions for using this video in a math lesson.

What is Frame, Focus and Follow-up?

Frame: A third grader was given the problem 35 x 5 to figure out. She said that if she multiplied 30 x 5 that would equal 150. Then she multiplied 5 x 5 and got 25. Then she added those two products together and got 175. Is that correct? Can you draw a picture to show what she did?

Focus: In this segment, Delete sneezes 103 times. How does the CyberSquad figure out how many clones that makes? As you watch this segment, use a paper and pencil to record the CyberSquad’s process of calculating clones.

Follow Up: What the CyberSquad found when figuring out how many clones there were, is sometimes called “partial products.” Do you think this name makes sense? Why? If Delete sneezed 116 times, how could you use multiplication facts you already know to figure out how many clones Delete would create? Write down your process and show all the steps.

Transcript

BUZZ: You okay?

DELETE: I don't know, I...I feel kinda weird ah. Ah-ah-ah-CHOOOO!!!

JACKIE: Start counting!

DELETE: Achoo! Achoo! Achoo! Achoo!

DIGIT: This could be a record breaker!

INEZ: How many sneezes did you say???

JACKIE: A hundred and three!

DIGIT: He sneezed so many times, you can barely see him!

LUCKY: It'll take forever to add 3 a hundred and three times.

INEZ: We make another table, that's what we do, and start with a multiple we know, that's close to one hundred and three!

JACKIE: How about 100 times 3, that’s 300!

INEZ: Good place to start, Jax. 100 sneezes times 3 clones is 300 clones.

LUCKY: And, since multiplication is just adding the same number over and over...

DIGIT: It is???

LUCKY: You betcha! So 101 times 3 is just 300 plus 3! Three hundred three!

INEZ: And one-hundred-three times three, is three more than that... three-hundred-six!

DIGIT: In that case, 103 times 3 is...309!

INEZ: You did it, Didge! You figured out how many more clones we have to worry about; three hundred and nine!

MATT: Good news, guys! We captured the last 78 clones!

INEZ: That's great, Matt. Uhh, but the bad news is uh, Delete just sneezed 103 times.

CY CLONE: 103 times?!

JACKIE: That's right, Cy. So there are still 309 clones to capture.

CY CLONE: Well that's it! There’s only one way to stop 'em now. I’ve got to get all 309 at the same time!

MATT: But how?

CY CLONE: I have to clone myself and deal with them one-on-one! Clono-a-clono!

CY CLONE: Set the Clonitron to 309!

DIGIT: The Clonitron is set.

CY CLONE: Hit it, Kid!

MATT: 309 clones coming your way!

CLONE OF CY: Move out.

Standards

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