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Two Tries, One Problem is a free printable Kindergarten to Grade 2 science worksheet on comparing test data from two designs, aligned to Common Core standard K-2-ETS1-3. It prints 2 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 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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All 25 sets ask different questions.

Two Tries, One Problem

K-2-ETS1-3

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Animals in the Playground

A tally the class kept for one week at playtime. ANIMALS WE SAW Worms in the flower bed ..... 6 Birds on the grass .......... 9 Ants near the bin ........... 12 Snails under the log ........ 4 We looked at the same time each day.

  1. 1. Which animal was seen most often?
  2. 2. What claim does this tally support?
2.Read the record, then answer the questions.

Our Weather Chart

A chart the class filled in every school day for two weeks in October. OUR WEATHER, TWO WEEKS Sunny days ......... 4 Cloudy days ........ 3 Rainy days ......... 2 Windy days ......... 1 We drew one picture every morning.

  1. 1. What can you say from this chart?
  2. 2. Which kind of weather happened most?

LessonPrint · K-2-ETS1-3 · Set 1 · free to copy for classroom use

Answer key — Two Tries, One Problem

Set 1. Prints on its own sheet.

  1. 1.1. Ants, with 12 near the bin. 2. Different animals live in different places in the playground.
  2. 2.1. Sunny days were the most common in these two weeks. 2. Sunny, with 4 days.

Questions about Two Tries, One Problem

What does the Two Tries, One Problem worksheet cover?

It practises comparing test data from two designs — 2 questions for Kindergarten to Grade 2, all on Common Core K-2-ETS1-3: Test two designs for the same problem and compare how each performs. The instruction to pupils is “Read the record, then answer the questions”, and the answer key follows on the next sheet.

Which Common Core standard does Two Tries, One Problem practise?

K-2-ETS1-3 — K-2-ETS1-3, in the Engineering Design domain for Kindergarten to Grade 2. The published standard reads: “Analyze data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of how each performs.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Two Tries, One Problem is written for Kindergarten to Grade 2, typically ages 7-8. It is one of the sheets on K-2-ETS1-3, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Two Tries, One Problem come with an answer key?

Yes. All 2 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Two Tries, One Problem can I print?

25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Two Tries, One Problem free to print and photocopy?

Yes. Two Tries, One Problem, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

Is there a lesson plan to teach K-2-ETS1-3?

Yes — “Two Tries, One Problem” is a 45-minute Kindergarten to Grade 2 plan for K-2-ETS1-3, timed section by section, with the misconceptions to expect and an exit ticket. Two Tries, One Problem is the practice that follows it.

More practice for K-2-ETS1-3

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

Teaching this next? Two Tries, One Problem is the 45-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.