Same Pieces, New Thing is a free printable Grade 2 science worksheet on how a set of pieces can be taken apart and rebuilt, aligned to NGSS performance expectation 2-PS1-3. 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 students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.
2-PS1-3
Number the steps from 1 to 4.
LessonPrint · 2-PS1-3 · Set 1 · free to copy for classroom use
Set 1. Prints on its own sheet.
It practices how a set of pieces can be taken apart and rebuilt — 2 questions for Grade 2, all on NGSS 2-PS1-3: Show that a set of pieces can be taken apart and built into something new. The instruction to students is “Number the steps from 1 to 4”, and the answer key follows on the next sheet.
2-PS1-3, under Physical Science for Grade 2. The published performance expectation reads: “Make observations to construct an evidence-based account of how an object made of a small set of pieces can be disassembled and made into a new object.” The worksheet assesses that performance expectation rather than a paraphrase of it.
Same Pieces, New Thing is written for Grade 2, typically ages 7-8. It is one of the sheets on 2-PS1-3, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.
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.
25 — one per student, 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.
Yes. Same Pieces, New Thing, 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.
Yes — “Same Pieces, New Thing” is a 50-minute Grade 2 plan for 2-PS1-3, timed section by section, with the misconceptions to expect and an exit ticket. Same Pieces, New Thing is the practice that follows it.
Show that a set of pieces can be taken apart and built into something new.
Teaching this next? Same Pieces, New Thing is the 50-minute plan for it, with the misconceptions to expect.
Last reviewed 2026-09-05. Aligned to 2-PS1-3 of the Next Generation Science Standards.