Teachers' Domain is moving soon to its new and improved home — PBS LearningMedia!          Learn More

# Two Points Determine a Line

Media Type:
Video

Running Time: 2m 10s
Size: 6.2 MB

or

Source: Cyberchase: “On the Line”

### 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, the CyberSquad have become separated on an island. In order to find each other they bring up a map on their Skwak Pads and try to compare positions using a coordinate grid and landmarks on the map.

Connections

Everyday Math (2004)
Teacher Lesson Guide, pp. 105, 462, 920
Teacher Reference Manual, pp. 145-148
Student Reference Book, pp. 69

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: What sort of features do you typically find on a map? How about on a globe? Have you ever seen vertical and horizontal lines on maps or globes? What are they for?

Focus: In this video segment, the CyberSquad is split into two groups, and they are trying to find each other. They have maps on their Skwak pads, but that is not enough. As you watch, notice what they do to make their maps more useful.

Follow Up: What is the shortest distance between two points? If you had to draw a straight line between two points on your paper, how would you do it? How would you make a straight line between two trees in a park?

Transcript

MACHINE: Whatever you leave, no one can retrieve. Place your item in the holder now.

DIGIT: Item! Holder! Now! Okay!...Whu-oh!

MACHINE: PLACE YOUR ITEM IN THE HOLDER NOW!

DIGIT: I just had it! It's gotta be here! It's gone!

MOTHERBOARD: Did you say...gone?

DIGIT: It was in my hatch! I mean, under my wing! No, under my hat? I don't know where it is! WHATAMIGONNADO?

MOTHERBOARD: To begin with, don't panic. Can you turn around ...go back the way you came...retrace your steps?

DIGIT: Good idea. I'll just follow my footprints back to where I started! Except there are no footprints! Motherboard?

MOTHERBOARD'S VOICE: Get a grip, Digit, I heard you. Can you draw a map on the skwak so I can see exactly where you walked?

DIGIT: Okay, okay. I'll draw a map. I started here at the arrow sign...and walked straight to the machine.

MOTHERBOARD: Did you zigzag or wander around?

DIGIT: Nope. I walked in a straight line all the way.

MOTHERBOARD: Like this?

DIGIT'S VOICE: Uh-huh! Yeah! Just like that!

MOTHERBOARD: Then the NIC has to be on that line...only one straight line between two points.

DIGIT: Gotcha!

MOTHERBOARD: Now walk back in a straight line...look for the NIC.

DIGIT: But Motherboard...how can I follow a line when there is no line?

DIGIT: I'm on the line...only one straight line between two points...and there's the NIC!

SCRATCH: SQUAWK!

DIGIT: Hey! Come back with that!

Standards

to: