Inside and Outside is a free printable Grade 4 science worksheet on arguing that internal and external structures support survival, aligned to Common Core standard 4-LS1-1. It prints 3 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.
1.Sort each one: Outside structure or Inside structure?
Sort: A stomach digesting food, A stem carrying water to the leaves, A rose's thorns, A fish's scales
Outside structureInside structure
2.Sort each one: Outside structure or Inside structure?
Sort: A rabbit's ears, Lungs taking in air, Roots drawing up water, A cactus's spines
Outside structureInside structure
3.Sort each one: Outside structure or Inside structure?
Sort: A tree's bark, A bird's feathers, A heart pumping blood, A skeleton holding the body up
Outside structureInside structure
LessonPrint · 4-LS1-1 · Set 1 · free to copy for classroom use
Answer key — Inside and Outside
Set 1. Prints on its own sheet.
1.1. A fish's scales — Outside structure 2. A rose's thorns — Outside structure 3. A stem carrying water to the leaves — Inside structure 4. A stomach digesting food — Inside structure
2.1. A cactus's spines — Outside structure 2. A rabbit's ears — Outside structure 3. Lungs taking in air — Inside structure 4. Roots drawing up water — Inside structure
3.1. A bird's feathers — Outside structure 2. A heart pumping blood — Inside structure 3. A skeleton holding the body up — Inside structure 4. A tree's bark — Outside structure
Questions about Inside and Outside
What does the Inside and Outside worksheet cover?
It practises arguing that internal and external structures support survival — 3 questions for Grade 4, all on Common Core 4-LS1-1: Argue that inside and outside body parts help a living thing survive and grow. The instruction to pupils is “Sort each structure into inside or outside”, and the answer key follows on the next sheet.
Which Common Core standard does Inside and Outside practise?
4-LS1-1 — 4-LS1-1, in the Life Science domain for Grade 4. The published standard reads: “Construct an argument that plants and animals have internal and external structures that function to support survival, growth, behavior, and reproduction.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
Inside and Outside is written for Grade 4, typically ages 9-10. It is one of the sheets on 4-LS1-1, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Does Inside and Outside come with an answer key?
Yes. All 3 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 Inside and Outside 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 Inside and Outside free to print and photocopy?
Yes. Inside and Outside, 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 4-LS1-1?
Yes — “Inside and Outside” is a 55-minute Grade 4 plan for 4-LS1-1, timed section by section, with the misconceptions to expect and an exit ticket. Inside and Outside is the practice that follows it.
More practice for 4-LS1-1
Argue that inside and outside body parts help a living thing survive and grow.
Teaching this next? Inside and Outside is the 55-minute plan for it, with the misconceptions to expect.