lesson

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If a tiny ladybug crawls past 0 inches on a ruler and stops right between whole numbers, how do you name its exact spot?
Just like a ruler, a number line measures length. The distance from 0 to 1 is called the unit interval.
The denominator tells you how many equal segments split each whole unit, while the numerator counts how many of those steps you move from 0.
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What is the single most common mistake students make when placing fractions on a number line?
Counting Jumps, Not Ticks
Many people mistakenly count the vertical tick lines instead of the intervals, which are the actual spaces between the lines.
To divide 0 to 1 into 4 equal parts, you only draw 3 tick marks inside the unit, creating 4 equal spaces of size 41β.
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What happens when your fraction has a numerator larger than its denominator?
Fractions Beyond One
When a fraction has a numerator larger than the denominator, such as 45β, you simply keep making equal hops past the whole number 1.
Since 44β equals one full unit, 45β is located exactly 1 whole step plus one more 41β hop to the right, which is the mixed number 141β.