Which One Actually Worked? is a free printable Kindergarten to Grade 2 science worksheet on comparing test results from two designs, aligned to Common Core standard K-2-ETS1-3. It prints 4 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 12 of 25 · the same problems every time you open this link.

One paper per pupil

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Which One Actually Worked?

K-2-ETS1-3

NameDate

Look at the results, then answer.

Waved cardTorchShoutSticks

Four signals were tested across the playground. Which was seen or heard most often?

YellowGreenBrown

Three flag colours were tested at a distance. Which was seen most often?

Drum 1Drum 2Drum 3

Three drums were tested. How many times was drum 2 heard?

Waved cardTorchShoutSticks

Four signals were tested. Which worked least often?

LessonPrint · K-2-ETS1-3 · Set 12 · free to copy for classroom use

Answer key — Which One Actually Worked?

Set 12. Prints on its own sheet.

1.The shout, heard 9 times out of 10.
2.Yellow, seen 9 times.
3.9 times.
4.The sticks, heard only 4 times out of 10.

More practice for K-2-ETS1-3

Test two designs for the same problem and compare how each performs.

Teaching this next? Which One Actually Worked? is the 50-minute plan for it, with the misconceptions to expect.

All Kindergarten to Grade 2 worksheets

Last reviewed 2026-09-05. Aligned to K-2-ETS1-3 of the Next Generation Science Standards.