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#### Video Description:

What's My Rule, you ask? This song will show you how you can use input/output tables and number expressions to create number patterns following a given rule. The NUMBEROCK crew are given a series of numbers as they make predictions about which numbers will come next if the pattern continues as for each table the find the answer to, "What's my Rule?".

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To gain access to premium materials for this lesson only, you can find our individual lesson packets on Teachers Pay Teachers at the link below.
1 - NUMBEROCK's 4.OA.5 CCSS Digital Task Cards
2 - NUMBEROCK's Number Pairs Task Cards
3 - NUMBEROCK's Input Output Tables Task Cards
Aligned With Common Core Standards 4.OA.5 and TEK Standards 3.5E and 4.5B

#### Input Output Song Lyrics:

What’s happening between the in and the out?
We can always find out without any doubt.
Make an educated guess, and test it out,
'til you find out what the "rule" is all about.

We're in a hot air balloon going up to fly;
a table shows our time and height in the sky.
We start at three meters off the ground;
at one minute, we're six meters up, staring down.
At two minutes, we’re up nine meters high.
What’s the “rule" that shows our place in the sky?

If you multiply any input by three,
and then add three, you get the output, you see.
In goes three, out comes twelve;
in goes four, out comes fifteen.. swell!
In goes five, out comes eighteen.
The rule’s "times three, add three," - and the view is pristine.

I have a function machine, the best you’ve ever seen.
I put in a twelve, and out came a three;
I put in eighteen, and out came five.
Then thirty went in and out came nine.
There’s only one thing I want to know at this junction:
What on earth is my machine's function?

If you divide any input by three,
and then subtract one, you’ll get the output, you see.
In goes nine, a two will come out for sure;
In goes fifteen, and you know out will come a four.
This input output table has a “rule."
It’s "divide by three, subtract one," - and that’s pretty cool.

When there are two sets of values, and they share
a mathematical relationship, there's a function there.
And we can use our mind - a mathematical tool -
to find and describe the relationship, called a “rule.”