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# Calculating Clones

Media Type:
Video

Running Time: 4m 42s
Size: 12.9 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, Delete creates three clones of himself every time he sneezes. The CyberSquad tries to keep track of how many clones there are as they attempt to round them all up.

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: Let’s say there is a certain flower that always has five petals. How many petals would there be in total if there were six of these flowers? How about if there were 26 flowers? How do you know? How can you keep track without counting each petal?

Focus: In this segment, Delete's sneezes create clones of himself. Watch to see how Inez tries to keep track of how many clones there are even though she can’t see them all. How does she do it?

Follow Up: Inez says that multiplication is just repeated addition. What does she mean? If Delete sneezed 100 times, how many clones would he create? If every time Delete sneezed, he created 6 clones, how many clones would there be if he sneezed 18 times?

Transcript

LUCKY: Hey, you mind telling me what you're doing?

INEZ: I think better this way. Now tell me exactly what happened.

LUCKY: Well, I saw Buzz...oh, and Delete...and 9 clones. Then Delete sneezed.

INEZ: What happened next?

LUCKY: Well, after the sneeze, there were 3 more clones. Then he sneezed a second time, and another 3 clones appeared. And when he did it again, 3 more clones showed up.

INEZ: Now we're getting somewhere. Let's write down what we know. We've got sneezes...we've got clones. Delete sneezed once, ah-choo!

LUCKY: Three clones appeared.

INEZ: That's right. Achoo! He sneezed a second time.

LUCKY: Uh, three more clones!

INEZ: Exactly, so two sneezes made six clones...and after 3 sneezes, there were 3 plus 3 plus 3, or 9 clones. Look at this! Three clones one time, is three. Three clones two times, is six. Three clones 3 times is nine, It's multiplication! To figure out how many clones, count the sneezes and multiply by three!

LUCKY: So, nine new clones plus the nine we started with, equals 18.

INEZ: That's how many clones are out there. Too bad we don't have a scoreboard to keep track.

LUCKY: One scoreboard, coming up!

MATT: Man, that was major clone eradication!

CY CLONE: Not eradication son, collection. They're all in here.

MATT: Inez, it's me! We got 4 of 'me!

INEZ: Got'cha, Matt...fourteen to go!

BUZZ: Awright, listen up. No need to panic, c'mon now there’s still fourteen of you left.

DELETE: I liked it better when there were more. I miss me.

BUZZ: C'mon, make some more! C'mon, c'mon!

DELETE: Ahh ...Ahhhh...AHHHCHOOO! Ahchoo! Ahchoo! Ahchoo! Ahchoo! Ahchoo! Ahchoo!

JACKIE: Oh, no! They're all over the place!

BUZZ: Wow, way to go, Delete, ha, ha! Thirteen sneezes (laughs). Alright, back to your booths!

DELETE: Why you looking at me like that?

BUZZ: Uh, you getting shorter?

DELETE: Shorter? Ahhhh!

JACKIE: The clones went by so fast I couldn’t count them all. But I know this: Delete sneezed 13 times!

INEZ: Don’t worry, Jax, We'll figure it out.

LUCKY: Delete sneezed again, huh?

INEZ: 13 big ones! Which means we have 13 new groups of 3 or 13 times 3.

LUCKY: Oh man! How many is that?

INEZ: Count the sneezes and multiply by three. 39!

LUCKY: How can you be sure?

INEZ: I'll show you. Multiplying is just repeating addition. So 13 times 3 is the same as adding 3, 13 times. 3 plus 3 plus 3 plus 3...

LUCKY: Whoa whoa, I can’t add all those three’! I might forget one or something.

INEZ: Okay, try this. We know 10 times 3 is 30, right!

LUCKY: Okay.

INEZ: So 10 sneezes make 30 clones. And since we add 3 more clones with every sneeze...11 sneezes makes 33 clones.

LUCKY: Then 12 sneezes would be um...33 plus 3 is 36!

INEZ: Right! And 13 times 3 must be...39! So 39 new clones, plus the 14 we had before, gives us...53 clones to catch!

MATT: 53 clones?! Oh, man! Cy! The clones have multiplied again! Now there are 53 of them!

CY CLONE: Make that fifty-two!

Standards

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