Free Printable WorksheetScienceGrade 3Science Curriculum3-5-ETS1-3

3.65 Plan and Conduct a Fair Test for a Prototype Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 3 Science worksheet provides structured practice on 3.65 Plan and Conduct a Fair Test for a Prototype. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Plan and Conduct a Fair Test for a Prototype - Choose an investigation plan that controls variables, collects data, and identifies failure points to improve a model or prototype. (NGSS 3–5-ETS1-3; SEP: Planning Investigations)

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 3.65 Plan and Conduct a Fair Test for a Prototype skill assessments:

Problem 1Difficulty: Mastery
From the lunch tray carrier results, if the goal is to carry 4 full cups with as few spills as possible and without handle tearing, which prototype is the strongest starting point for the next improvement cycle?
APrototype A
BPrototype C
CNone of the prototypes should be used again
DPrototype B
Solution & Explanation:Prototype B carries 4 full cups, avoids handle tearing, and has only a small spill once, so it is the strongest design to keep improving.
Problem 2Difficulty: Mastery
A class wants to compare raft prototypes in small waves. Which plan is the fairest?
AUse different tubs and different numbers of marbles for each raft.
BChange raft design and water depth at the same time.
CUse the same tub, the same amount of water, the same number of marbles, and the same wave maker, and change only the raft design.
DLet different students make different sized waves for each raft.
Solution & Explanation:The same testing setup keeps the waves and load consistent so the raft design is the one feature being compared.
Problem 3Difficulty: Mastery
A student says, "Prototype A is best because it stayed afloat 30 seconds one time." Look at the raft data. How should the team respond?
AThey should ignore the rest of the data.
BThey should compare all repeated trials, because one strong trial is not enough evidence.
CThey should stop testing and choose A right away.
DThey should choose the raft with the brighter color.
Solution & Explanation:One unusually strong trial is not enough. The team should use all repeated results before deciding which raft works best.

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Frequently Asked Questions

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QHow do I download and print this 3.65 Plan and Conduct a Fair Test for a Prototype 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 3.65 Plan and Conduct a Fair Test for a Prototype worksheet free for teachers and homeschoolers?

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QCan students practice 3.65 Plan and Conduct a Fair Test for a Prototype 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 3-5-ETS1-3 (Primary standard selected for prompt fields in this prompt cell: NGSS 3-5-ETS1-3. Skill statement in this prompt cell: Which investigation plan best controls variables, collects data, and identifies failure points to improve a model or prototype. Associated standards listed with this skill in this prompt cell: NGSS 3-5-ETS1-3; SEP: Planning Investigations.).

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