SOMEONE HUMS "Happy Birthday"
NARRATOR: How exciting, looks like it's somebody's birthday today. Graphica, the ugly sister, has made a great big cupcake.
Oooh!
That's a lot of candles.
GRAPHICA: Erica, there you are.
NARRATOR: Oh! It's Erica the puppet's birthday today.
The birthday cake must be for her.
ERICA: Yayyy!
NARRATOR: Ohh. Surely she can't be forty YEARS old? She's just a kid!
GRAPHICA: You're not 40 years, are you? No.
NARRATOR: Forty MONTHS old?!
So, Erica has a birthday cake every month?!
ERICA: Oh!
NARRATOR: That's just an excuse for Graphica to eat a lot of cake.
There's the other Ugly Sister, Angular, with what looks like another birthday cake.
Has Erica got TWO birthday cakes?
ERICA: Uh?!
ANGULAR: No.
NARRATOR: Obviously not.
What's Angular up to?
ANGULAR: La-la-la-la, la-la. Mrs. Aubergine…
NARRATOR: Aah. She's made a cake for an aubergine?!
ANGULAR: …whose birthday it is today.
Mwah.
NARRATOR: And another 40th?
ANGULAR: Happy birthday.
NARRATOR: Weeks. So, you must be forty weeks old.
So, Mrs. Aubergine must have a birthday cake every week! That's an awful lot of cake Angular's got to eat.
And she's going to need an awful lot of candles too.
Hmm. Where's that huge pile of candles gone?
Ohh, looks like Graphica has used them all up.
[COMEDY DRUM BOOMS]
Uh-oh.
[COMEDY HONKS]
What a lot of mess!
What a lot of birthdays! Let's see if we can sort this lot out.
Let's do Maths!
Erica the puppet is having her 40 months birthday.
How old is she in years and months?
Mrs Aubergine is forty weeks old.
How old approximately is she in months?
How many days old are you today?
Video summary
Ugly Sister, Graphica, has made a birthday cake for Erica, the puppet.
She is 40 months old today. Ugly Sister, Angular, has made a birthday cake too.
This one is for Mrs Aubergine who is 40 weeks old.
Three questions then challenge us firstly to work out how old 40 months is in years and months, how old 40 weeks is in months, and lastly asks us to work out how many days old we are today.
This is from the series: Let's Do Maths.
Teacher Notes
Introduce conversions of units of time - from months, into years and months and weeks, into months and years.
Pupils will be able to use their knowledge of how many days there are in a week to build up multiples and remainders, to arrive at sensible solutions.
There are two differentiated questions that are closed and an open-ended question that could be the stimulus for further time investigations.
This clip will be relevant for teaching Maths at KS2 in England and Wales, Second Level in Scotland and KS1 and KS2 in Northern Ireland.
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