﻿(music plays)

In a colourful TV studio, Robyn stands next to a wall touch screen showing a triangle and a formula. She is in her mid-twenties, with long blond hair. She wears a blue T-shirt with a print that reads "Home Work Zone" and black trousers.

She says HEY, TVO KIDS.
I'M TEACHER ROBYN.
TODAY, WE'RE GOING TO EXPLORE
HOW TO FIND THE ARE OF A
TRIANGLE USING A FORMULA.
IT'S REALLY EASY, REMEMBER THAT
AREA IS THE AMOUNT OF SPACE
A TWO DIMENSIONAL SHAPE TAKES
UP. HERE'S THE FORMULA:
TO FIND THE AREA OF A TRIANGLE,
MULTIPLY THE BASE BY THE HEIGHT
AND DIVIDE THE WHOLE THING
BY TWO.
THE BASE IS THE BOTTOM
OF THE TRIANGLE,
AND THE HEIGHT
IS HOW FAR UP IT GOES.

She clicks on a top menu and an equilateral triangle with a dotted line in the middle appears.

She continues HERE'S AN EXAMPLE: HERE WE'VE
BEEN GIVEN THE NUMBERS,
BUT SOMETIMES, YOU MAY NEED TO
USE A RULER,
OR OTHER MEASURING DEVICE TO
WE KNOW OUR FORMULA IS BASE
TIMES HEIGHT DIVIDED BY TWO
NOW, ALL WE NEED TO DO IS PLUG
IN THE NUMBERS.
WE ALWAYS WANT TO MAKE SURE THAT
WE'RE USING OUR UNITS
WHEN REPRESENTING THE BASE AND
THE HEIGHT, IN THIS CASE,
THE BASE IS 12 CENTIMETRES
TIMES SEVEN CENTIMETRES.
WHEN YOU'RE FIGURING OUT
THE AREA OF THE TRIANGLE,
MAKE SURE YOU GO STEP BY STEP.

She uncovers the bottom of the screen to show the answer.

She continues NOW WE KNOW THAT THE AREA OF THE
TRIANGLE IS 84 CENTIMETRES
SQUARED DIVIDED BY TWO.
WE SAY CENTIMETRES SQUARED
TWO DIMENSIONS.
FINALLY, WE DIVIDE 84 BY TWO AND
42 CENTIMETRES SQUARED.
LET'S TRY ANOTHER EXAMPLE:
HERE, WE CAN SEE THAT THE UNITS
HAVE CHANGED.
NOW, WE'RE TALKING IN METRES.
HOWEVER, THE FORMULA IS THE SAME
WE KNOW THAT THE BASE OF THE
TRIANGLE IS EIGHT METRES
AND THE HEIGHT IS FIVE METRES.
WE START BY MULTIPLYING EIGHT
METRES BY FIVE METRES.
THAT GIVES US
40 METRES SQUARED.
NOW, WE'LL QUICKLY DIVIDE
THAT BY TWO,
AND WE END WITH THE AREA
OF THE TRIANGLE,
WHICH IS 20 METRES SQUARED.
ONCE YOU HAVE THIS FORMULA,
IT'S REALLY SIMPLE. WAY TO GO,
TVO KIDS. SEE YOU NEXT TIME!