﻿Teacher Troy stands in front of a blackboard with a score sheet on it. He holds a big dice.

Teacher Troy is in his thirties, bald and with a shadow of a beard. He wears a blue Homework Help T-shirt.

He says HI
TVO KIDS.
THIS IS TEACHER
TROY,
AND WE'RE HERE TO
PROBABILITY.
PROBABILITY IS
THE STUDY OF
CHANCE AND IT'S
ALSO THE STUDY OF
OUTCOMES.
NOW EVERY TIME YOU
GO AND PLAY
A BOARD GAME,
OR ALMOST ANY GAME
THAT YOU PLAY,
WE USE
PROBABILITY.
IT'S A NICE WAY
OF STUDYING THE
NUMBERS AND THE
FACTS THAT
HAPPENED
BEHIND THE SCENES
OF THE GAMES THAT
YOU PLAY.
SO FOR
EXAMPLE, WHEN YOU
PLAY SOME POPULAR
BOARD GAMES,
YOU ALWAYS SEE OUR
GOOD FRIEND THE DIE.
USUALLY YOU HAVE
TWO DICE
TOGETHER AND
YOU ROLL THEM TO
GIVE YOU POSSIBLE
OUTCOMES.
SO THIS IS
A SIX SIDED DIE.
SO YOU SEE THERE'S
ONE, TWO, THREE,
FOUR,
FIVE, AND SIX.
NOW WHEN YOU ROLL
A DIE,
THERE'S ONLY SIX
POSSIBLE OUTCOMES.
SO JUST TO SHOW
YOU,
WE'RE GOING TO
DO SOME EXPERIMENTS
WITH PROBABILITY.
JUST TO GIVE YOU
AN IDEA OF HOW
IT WORKS.
SO WHAT I'M
GOING TO DO,
IS I'M GOING TO ROLL
THIS DIE 18 TIMES,
AND THESE NUMBERS
ARE GOING TO RACE.
AND RIGHT HERE ON
OUR SHEET,
WE SEE THAT
WE HAVE THE NUMBER
ZERO, ONE, TWO,
THREE, FOUR,
FIVE, SIX,
IN THE STARTING
FOR A NICE
BIG RACE.
THIS IS
THE START LINE,
AND THIS IS THE
FINISH LINE.
SO EVERY TIME
I ROLL A NUMBER,
I'M GOING TO DRAW
AN X,
JUST TO SEE
WHO DO YOU THINK IS
GOING TO WIN
THE RACE?
WE'LL SEE.
SO I'M GOING TO
START ROLLING
AND WE'LL
SEE WHAT ENDS
UP HAPPENING.
SO THAT'S A
TWO.

He keeps rolling the dice till he completes the chart except for the number zero.

He says NOW, THE
QUESTION IS
WHAT HAPPENED TO THE
NUMBER ZERO?
IT
WE NEVER ROLLED IT
BECAUSE IT IS
IMPOSSIBLE TO
ROLL A ZERO ON A
SIX SIDED
DIE,
BECAUSE IT'S
NOT ONE OF THE
POSSIBLE
OUTCOMES.
SO WHAT'S IMPORTANT
TO KNOW IS,
YOU HAVE AN
EQUAL CHANCE OF
GETTING A ONE, TWO,
THREE, FOUR,
FIVE OR SIX.
SO YOU'RE THINKING
THEY SHOULD
ALWAYS
HAVE A TIE.
BUT PROBABILITY
IS BUILT ON
DOING
MILLIONS OF ROLLS.
NOT JUST 18,
10, OR 5.
YOU HAVE TO ROLL
IT A MILLION TIMES.
SO WHAT YOU CAN
DO IS WHEN
YOU'RE AT
HOME, USING COINS.
TAILS.
YOU DO IT
ALL THE TIME TO
DETERMINE WHO STARTS
THE GAME,
WHO GETS THE
BALL, SO ON AND SO
FORTH, YOU KEEP
FLIPPING A COIN
HUNDREDS
OF TIMES.
DRAW A NICE CHART
TO SAVE YOUR
INFORMATION
TO RECORD WHAT
YOU'RE DOING AND
SEE WHICH ONE
COMES UP
MORE OFTEN.
OR DO YOU
PICK TAILS?
WHY DO YOU PICK
WHICH ONE?
JUST DO SOME
EXPERIMENTS AND
HAVE FUN WITH IT
AND YOU'LL SEE
WHAT
HAPPENS.
SO PROBABILITY IS
A STUDY OF
CHANCES AND
IT GIVES YOU A LOT
OF OPPORTUNITY TO
FIGURE OUT HOW
TO GO AND
APPROACH GAMES THAT
YOU'RE GOING TO
BE PLAYING IN
THE FUTURE.
I'M TEACHER TROY,
AND I HOPE THAT HELPS.