Unit 6.5 Scale Factor
Tune into Scale Factor to see three unlucky contestants face their biggest fears...SNAKES! ...Wait. It's not snakes? It's triangles? ...Huh. Time to watch old episodes of Survivor instead.
GO! Ohhh…too bad, so sad.
Gotta buzz in there a bit faster, contestant.
As I’m sure you all well know, a scale factor tells us the proportion by which we’re either [Definition of scale factor on a chalkboard and a spider on the top left]
reducing or enlarging a shape.
With a scale factor between 0 and 1, as in this case, we’ll be reducing the shape’s size.
A scale factor of point-four means the new shape will be 40% of the original’s size… [Triangle and a 40% smaller triangle]
…meaning your scaled triangle should have had sides of 4, 8 and 14.
Next time, don’t be afraid to hit your buzzer thing a little earlier… [Man shrugging his shoulders]
Okay, Contestant #2! We’re giving you a triangle with side lengths of 6, 8 and 11…
…and a scale factor of 5.
What’s your new shape look like?
OHHHH…that’s a shame. Dilly-dallying cost you there. [Contestant unhappy at not buzzing in]
When we have a scale factor over 1, you simply multiply the dimensions of your shape by that number.
So here, you should have gotten a triangle with sides of 30, 40 and 55.
That’s a big ‘un. Let’s find out if Contestant #3 can take
advantage of his opponents’ sluggishness…
Huh. Well, it appears that Contestant #3 has left the building. [Contest #3 walking away from the building]
Some people just cannot face their fears head on.
Which means… we have no winner yet again tonight… 48 days running.
We’ll see if we can keep that record going tomorrow night on…SCALE FACTOR!! [Scale factor show logo]