(music plays)

Sarah stands next to a wall touch screen showing a definition and a maple leaf. She is in her mid-twenties, with short straight brown hair. She wears a blue T-shirt with a print that reads "Home Work Zone" and black tights.

She says HI, TVO KIDS.
I'M TEACHER SARA.
TODAY, WE'RE GOING TO TALK A
LITTLE BIT ABOUT STEM and LEAF
PLOTS.
A STEM and LEAF PLOT IS A WAY TO
ORGANIZE DATA OR SETS OF DATA.
IT BREAKS NUMBERS DOWN TO
TWO PARTS: A STEM AND A LEAF.
IT BREAKS NUMBERS DOWN
BY USING THEIR PLACE VALUE.

She clicks on a top menu and a two-column table appears.

She continues SO LET'S SAY, THAT NOW I WANT TO
CREATE A STEM and LEAF PLOT
USING A SET OF NUMERICAL DATA.
HERE, I HAVE NUMBERS THAT
REPRESENT THE AGES
OF MY PARTY GUESTS
AT MY MOST RECENT
MATH IS FUN PARTY.
I CAN SEE THAT I HAVE FOUR
PIECES OF DATA.

She points to numbers "11, 23, 23, 37."

She continues THAT MEANS THAT
I HAVE FOUR GUESTS.
SO IN ORDER TO DO THIS,
REMEMBER THAT STEM,
REPRESENTS THE VALUE IN THE TENS
COLUMN, AND THE LEAF,
REPRESENTS THE VALUE
IN THE ONES COLUMN.
WHAT I HAVE TO DO IS TAKE A
CLOSE LOOK AT EACH PIECE OF DATA
SO MY FIRST PIECE OF DATA
IS ELEVEN.
THE FIRST THING I DO IS TAKE A
LOOK AND I IDENTIFY THE NUMBER
IN THE TENS COLUMN,
IN THIS CASE, IT'S A ONE.
SO THE ONE IS MY STEM.
THE NEXT THING THAT I HAVE TO DO
IS TAKE A LOOK AT THE NUMBER
IN MY ONES COLUMN. AND IN THIS
CASE, IT IS ALSO A ONE.
BECAUSE THE NUMBER 11 HAS ONE
TENS AND ONE ONES,
I HAVE ONE IN MY STEM,
WHICH REPRESENT MY TENS,
AND ONE IN MY LEAF,
WHICH REPRESENTS MY ONES.
THE NEXT THING I HAVE TO DO IS
REPEAT THIS PROCESS.
SO NOW I TAKE A LOOK AT
MY NEXT VALUE.
MY NEXT VALUE IS 23. IF I TAKE A
LOOK AT THE DIGIT IN MY TENS
COLUMN,
I CAN SEE THAT THIS
TIME IS A TWO.
THAT MEANS I NEED TO
START A NEW STEM.
SO I WRITE MY TWO IN MY STEM.
THE NEXT THING I HAVE TO DO IS
TAKE A LOOK AT MY ONES COLUMN.
IN THIS CASE, I CAN SEE THAT THE
VALUE 23 HAS A THREE IN THE ONES
COLUMN.
SO I'M GOING TO WRITE DOWN MY
THREE IN MY LEAF.
REPEAT THE PROCESS YET AGAIN.
I HAVE A TWO IN MY TENS COLUMN,
BUT WAIT I ALREADY HAVE ONE DOWN
THERE.
THIS MEANS, I DO NOT HAVE TO
MAKE ANOTHER STEM.
I CAN SIMPLY LEAVE THAT TWO
THERE, BECAUSE THAT STEM
ALSO WORKS FOR
THIS PIECE OF DATA.
THE NEXT THING I HAVE TO DO IS
LOOK AT MY ONES COLUMN.
I HAVE ANOTHER THREE, THIS IS
WHERE THINGS GET A LITTLE BIT
TRICKY.
ALTHOUGH WE DON'T HAVE TO DO
ANOTHER STEM OF TWO,
WE DO HAVE TO DO
ANOTHER LEAF OF THREE.
THAT IS BECAUSE
IN A STEM and LEAF PLOT,
THE NUMBER OF LEAVES
THAT YOU HAVE,
HAS TO EQUAL THE NUMBER OF DATA
CASES YOU HAVE.
AND IN THIS CASE,
WE HAVE FOUR DATA PIECES.
SO THAT THREE IS VERY IMPORTANT.
FINALLY, WE'LL DO THE SAME THING
TO OUR LAST PIECE OF DATA.

She writes down the numbers on the table using her index finger.

She continues TAKE A LOOK AT OUR TENS COLUMN,
I SEE THAT'S A THREE,
SO THAT'S A NEW STEM,
WRITE MY THREE,
AND NOW I CAN LOOK AT MY ONES
COLUMN, I SEE THAT'S A SEVEN,
SO THAT'S A NEW LEAF.
I CAN DOUBLE CHECK TO MAKE SURE
THAT THE NUMBER OF LEAFS I HAVE
EQUALS THE NUMBER OF DATA PIECES
ONE, TWO, THREE, FOUR.
I'VE GOT IT!

Now, the touch screen shows helpful hints.

She continues SO, A FEW THINGS THAT YOU NEED
TO REMEMBER:
THE FIRST THING IS TO HIGHLIGHT
OR UNDERLINE EACH PLACE
VALUE COLUMN
TO MAKE SURE YOU
DON'T MAKE AN ERROR.
DOUBLE CHECK YOUR VALUES,
LIST IT IN ORDER FROM LEAST TO
GREATEST, THAT IS VERY IMPORTANT
ONLY INCLUDE EACH DIGIT IN THE
TEN COLUMN ONE TIME,
JUST LIKE THE EXAMPLE
WE DID WITH THE 23.
BUT, IF YOU HAVE A DIGIT THAT
OCCURS MORE THAN ONCE
IN THE ONES COLUMN,
YOU DO HAVE TO WRITE THAT DOWN
EACH TIME IN YOUR LEAF.
THE NUMBER OF LEAVES THAT YOU
HAVE MUST EQUAL
THE NUMBER OF TOTAL NUMBER OF
DATA PIECES,
AND FINALLY, ALWAYS REMEMBER TO
PUT A TITLE IN YOUR GRAPH
SO THAT THE READER KNOWS EXACTLY
WHAT THE INFORMATION SHOWS.
THERE YOU HAVE IT TVO, KIDS.
STEM and LEAF PLOTS.
I'M TEACHER SARAH.
SEE YOU NEXT TIME!