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Fractions on a Number Line by NUMBEROCK Video Subscription Banner

Video Description:

Join Benny in his school where he is investigating fractions on number lines. He gets some help from his friend Thania, and then shows his stuffed animal how to write 1/3 on the number line. While doing his homework later in the evening, Benny gets stuck on a problem about plotting a fraction on a number line that is greater than one, so he texts Thania to get some help.

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1 - NUMBEROCK's Fractions on a Number Line Fun Pack and Lesson Materials
2 - NUMBEROCK's Fractions on a Number Line Task Cards
3 - NUMBEROCK's Fractions on a Number Line Google Classroom Digital Task Cards
Aligned With Common Core Standards 3.NF.2, 3.NF.2a, 3.NF.2b and TEK Standards 3.3A, 3.3B, and 3.7A

Fractions on a Number Line Song Lyrics:

I asked my friend if she could help me find
where to write one-half on the number line.
She said, “First draw a line with two arrows.”
Then she sang a song; here’s how it goes:

Zero to one is the whole that we split apart.
The denominator tells us into how many parts.
Make a line that starts from zero to the first mark,
and one-half is what you’ll find when you get that far.

My stuffed animal can’t talk, but I thought I heard,
“Hey, Ben, on the number line, where’s one-third?”
I said, “First, draw a line with two arrows.
And hey! I know a cool tune; here’s how it goes.”

Zero to one is the whole that we split apart.
The denominator tells us into how many parts.
Make a line that starts from zero to the first mark,
and one-third is what you’ll find when you get that far.

Then I texted my friend, “What’s to be done
when the numerator isn’t one?”
She said, “Let’s try to find five over nine
on the number line in - like - no time.
Simply partition nine parts from zero to one.
Starting from zero, count five, and at five-ninths we arrive.”

Zero to one is the whole that we split apart.
The denominator tells us into how many parts.
Make a line that starts from zero to the fifth mark,
and five-ninths is what you’ll find when you get that far.

Let’s use the number line to describe this pie.
First, count the total pieces... there are five.
Five’s the denominator (all the parts), so five goes underneath the fraction bar.
This number line goes from zero to two,
but the fraction’s less than one, so here’s what to do:
Make five equal spaces from zero to one.
Now the final step before we’re done:
The numerator is the one piece that’s mine.
After the first space I’ll write one-fifth under the line.
Just remember this one tip in your minds:
Always count the spaces - never the lines.

Zero to one is the whole that we split apart.
The denominator tells us into how many parts.
Make a line that starts from zero to the first mark,
and one-fifth is what you’ll find when you get that far.

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