Colourful animated numbers, zero to nine, jump in a line then form the title “Wacky Number Songs”.

An upbeat song plays: IT'S THE WACKY WACKY
NUMBER SONGS.
OH YEAH.

A caption reads “With Ava”. Ava holds a tangrams puzzle book. A television screen shows the different colourful tiles that make up the puzzle.

Ava says: IT'S MY BEST FRIEND'S BIRTHDAY
AND I'M GIVING HER THESE COOL
TILES.
YOU CAN REARRANGE THEM TO MAKE
ALL KINDS OF FUN SHAPES.

Ava opens the puzzle book. The different shapes form together into a large square. A puzzle of a cat appears on a page.

Ava says: AND HERE'S SOMETHING COOL.
TAKE THIS SQUARE, FOR EXAMPLE.
IF CUT IT IN TWO, THE AREA,
THAT'S THE SPACE INSIDE, STAYS
THE SAME BUT THE PERIMETER,
WHICH IS LIKE A FENCE AROUND THE
OUTSIDE, CHANGES.

The number 2 marks each side of a square. An 8 appears in the tops right corner of the television screen.

Ava says: SEE, THE SQUARE HAD A PERIMETER
OF 8, THE RECTANGLE HAS A
PERIMETER OF 10, BUT THE AREA OF
BOTH SHAPES HASN'T CHANGED.
LET'S COMPARE SHAPES WE CAN MAKE
WITH MY FRIEND'S TILES.

Ava smiles as she closes the puzzle book. A square made up of different colourful tiles has a Perimeter of 24. A triangle made with the same tiles has a perimeter of 22. A house shape made with the tiles has a perimeter of 30. A sailboat has a perimeter of 44.

Ava sings: LET'S COMPARE SHAPES, AND THE
AREA THEY TAKE.
THE PERIMETER CAN CHANGE.
BUT THE AREA STAYS THE SAME.
I BET THERE'S LOTS OF THINGS
THAT WE COULD MAKE.
SQUARES AND TRIANGLES, YOU CAN
SEE.
MAKE A VERY TALL TREE.

A very tall tree has a perimeter of 47.

Ava sings: AND WITH THE SAME SHAPES,
WHAT'S THAT CHIRP YOU HEARD?
LITTLE BIRD.

A little bird has a perimeter of 39. Ava flaps her arms.

Ava sings: THE DISTANCE AROUND THE SHAPES,
CHANGES AND GROWS.
BUT THE AREA
STAYS THE SAME, I KNOW.

A fox has a perimeter of 46.

PUT A FOX
IN A BOX.
WAIT A MINUTE, I CHANGED MY
MIND.
IT'S GONNA BE A DOG.
THAT WORKS.

A dog has a perimeter of 49.

Ava sings: LET'S COMPARE
SHAPES AND THE AREA THEY TAKE.
THE PERIMETER CAN CHANGE, BUT
THE AREA STAYS THE SAME.
LET'S COMPARE SHAPES, AND THE
AREA THEY TAKE.
THE PERIMETER CAN CHANGE, BUT
THE AREA STAYS THE SAME.

Ava sits on the back of a colourful flying bird with a Perimeter of 39. She shrugs.

The song ends

Ava speaks: SO, AS YOU CAN SEE THE AREA IS
THE SAME EVEN WHEN THE SHAPE
CHANGES.
AND NOW I MADE A CUTE LITTLE DOG
FOR MY FRIEND'S BIRTHDAY.

The shapes of the puzzle form a colourful dog shape on a piece of paper.

Ava speaks: WHO'S A GOOD BOY?
(DOG BARKING)

The animated numbers spell out “Wacky Number Songs”.

End credits read “TVO Kids. Apartment 11 Productions.”