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A journey into medieval times is the perfect setting to learn about dividing a whole number by a fraction. Ivan is everyone's favorite stone mason as he builds walls and seats from blocks of rocks for us to contemplate what it means to divide by a fraction. Meanwhile in the Kingdom there is a dragon afoot that threatens the peaceful learning process; yet, there is no reason to fear! A rapper knight has come to save the day, protect our wonderful stone mason teacher, and pledge his love to the princess of the land.
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1 - NUMBEROCK's Dividing Whole Numbers by Fractions Fun Pack and Lesson Materials
2 - NUMBEROCK's Dividing Whole Numbers by Fractions Task Cards
3 - NUMBEROCK's Dividing Whole Numbers by Fractions Google Classroom Digital Task Cards
Aligned With Common Core Standard 5.NF.7b and TEK Standards 5.3J & 5.3L
Dividing Whole Numbers by Fractions Song Lyrics:
I took my blocks and built two walls.
In each wall one block was one fourth of them all.
Two divided by one fourth equals eight;
eight blocks to build the wall at my castle gate.
To divide a whole number by a fraction we start
by dividing the whole number into fractional parts.
Then count the number of fractional parts present;
and that will be the quotient.
Then I took my blocks and built three seats.
One block was one fifth of each.
Three divided by one fifth equals fifteen;
that’s how many blocks it took to build my seats.
When there’s a fraction we want to divide by,
we can flip the fraction and multiply.
Think of three divided by one fifth:
we’ll get the same answer if we multiply and flip.
So these expressions are equal, and we call
five over one, one-fifths reciprocal.