Swim Lane Unit Fractions

Split the pool lane from 0 to 1 into equal parts to find unit fractions.

Read the lane

Each pool lane goes from the start wall at 0 to the far wall at 1. The tick marks split the lane into equal parts.

Coach Rivera puts tick marks on Ella's lane. Ella swims from 0 to the dot.

The lane is split into equal parts.
The dot is at 1/ of the lane.

Omar swims from 0 to the dot.

The dot is at 1/ of the lane.

Priya swims from 0 to the dot.

Where is Priya's dot?

A. 1/7B. 1/5C. 1/6D. 6

Match each lane to the unit fraction at its dot.

Coach's lane plans

Help Coach Rivera split each lane into equal parts. Every lane goes from 0 to 1.

Coach Rivera wants to split this lane into 3 equal parts.

She needs tick marks between 0 and 1.
The first tick mark after 0 will be at 1/.

Kenji will swim 1/8 of the lane. Which number line shows a dot at 1/8?

A. B. C. D.

Coach Rivera splits a lane from 0 to 1 into 8 equal parts.

Each part is 1/ of the lane.
It takes of these parts to swim from 0 to 1.

Ava swims 1/2 of the lane and stops. Which number line shows where she stops?

A. B. C. D.

Check the swimmers' thinking

Read what each swimmer says. Decide what makes sense.

Leo looks at this lane. He says the dot is at 1/5 because he counts 5 tick marks.

Which is correct?

A. The dot is at 1/4, because 0 to 1 is split into 4 equal parts.B. Leo is right. There are 5 tick marks, so the dot is at 1/5.C. The dot is at 1/3, because there are 3 tick marks between 0 and 1.

10.

Zoe draws a lane from 0 to 1. She splits it into 3 parts, but the parts are not the same size. Can she call the first tick mark after 0 the point 1/3?

A. Yes, because there are 3 parts.B. No, because the 3 parts must be equal for each part to be 1/3.C. Yes, because the first tick mark is always 1/3.

11.

Jun wants to show 1/6 on a number line from 0 to 1. Tell him how to find 1/6 and why that point is 1/6.