Free Printable WorksheetScienceGrade 3Science CurriculumSCI.3.28

3.28 Structures for Survival (Extension) Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 3 Science worksheet provides structured practice on 3.28 Structures for Survival (Extension). Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Structures for Survival (Extension) - Which option correctly identifies structures (beaks, thorns, shells, fur) and explain how they help plants and animals survive in their environment. (Extension; common in state frameworks)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 3

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 3.28 Structures for Survival (Extension) skill assessments:

Problem 1Difficulty: Mastery

Many beaks and much fur are made mostly of keratin, while many shells are made mostly of calcium carbonate.

Which option correctly matches materials to structures?

ABeaks: calcium carbonate; Fur: bone; Shells: keratin.

BBeaks: sugar; Fur: starch; Shells: oxygen.

CBeaks: keratin; Fur: keratin; Many shells: calcium carbonate.

DBeaks: water; Fur: salt; Shells: oil.

Solution & Explanation:Keratin is a protein that forms tough fibers in beaks and fur. Many shells use calcium carbonate minerals for hardness.

Problem 2Difficulty: Mastery

A class gives two bird beak models the same 50 hard seeds. Beak Type X cracks 40 seeds. Beak Type Y cracks 15 seeds.

Which claim is best supported by the data?

ABeak Type Y is better because it cracks fewer seeds.

BNeither beak can be compared using data.

CThe beaks work the same because they both touched seeds.

DBeak Type X is better for hard seeds because it cracks more of them.

Solution & Explanation:The data show that Type X cracks more hard seeds than Type Y. That makes Type X the better structure for this food source.

Problem 3Difficulty: Mastery

A student compares a turtle shell and a snail shell. Both protect the animal, but they are built differently.

Which statement is correct?

ABoth shells are made of fur and grow from hair follicles.

BA turtle shell is part of an internal skeleton (bone plus keratin scutes), while a snail shell is an external calcium carbonate structure.

CA snail shell is part of a backbone and ribs like a turtle's shell.

DNeither shell has any protective function.

Solution & Explanation:Similar functions can come from different structures. Turtle shells are linked to bones; snail shells are external mineral shells.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 3.28 Structures for Survival (Extension) worksheet?

Click either the "Download PDF" or "Download DOCX" button at the top of the page. You can print the PDF directly from your browser or edit the DOCX file in Microsoft Word or Google Docs to tailor the questions to your students.

QIs this 3.28 Structures for Survival (Extension) worksheet free for teachers and homeschoolers?

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QCan students practice 3.28 Structures for Survival (Extension) online with instant feedback?

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 3 Science students. It aligns with educational standard SCI.3.28 (Grade 3 science skill focused on Structures for Survival.).