Free Printable WorksheetScienceGrade 7Science CurriculumSCI.7.3

7.3 Identifying and Controlling Variables Worksheet

Download our free printable Grade 7 Science worksheet on 7.3 Identifying and Controlling Variables. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 7 Science worksheet provides structured practice on 7.3 Identifying and Controlling Variables. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Identifying and Controlling Variables - Which setup best isolates the independent variable while controlling other factors? (NGSS SEPs: Planning and Carrying Out 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 7

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 7.3 Identifying and Controlling Variables skill assessments:

Problem 1Difficulty: Mastery

Students want to test whether the speed of stirring affects crystal size when making rock candy. Cooling rate can affect crystal size too. Which setup best isolates stirring speed?

AStir fast in a small cup and stir slowly in a large cup.

BPrepare identical sugar solutions, keep cooling conditions the same (same container, same location, no drafts), stir for the same total time but at different speeds, then stop stirring and let crystals grow for the same number of days; compare crystal size.

CCool one solution in the fridge and another on the counter while changing stirring speed.

DLet one solution grow crystals for one day and another for a week.

Solution & Explanation:Stirring speed is the independent variable. Cooling conditions and growth time must be controlled because they also affect crystal size; otherwise you cannot tell what caused the difference.

Problem 2Difficulty: Mastery

An engineering class tests whether painting a metal can black increases how fast it warms in sunlight. Cloud cover can change sunlight intensity. "Which setup best controls sunlight changes?,A. Place the black can in sun and the unpainted can in shade to see a bigger difference. | B. Use different amounts of water inside each can because one heats faster. | C. Place a black-painted can and an unpainted can side-by-side in the same sun at the same time

Solution & Explanation:answer choices

Problem 3Difficulty: Mastery

A student wants to test whether a certain type of music affects how long it takes to solve puzzles. Puzzle difficulty could vary. Which setup best controls puzzle difficulty?

AUse a set of puzzles that are matched in difficulty and randomly assign which puzzle is solved with music and which in silence for each student, or use the same puzzle type with different but equivalent versions; compare time differences within students.

BTime students solving puzzles in different rooms with different lighting.

CUse easy puzzles with music and hard puzzles in silence.

DLet students choose whichever puzzles they like in each condition.

Solution & Explanation:Music condition is the independent variable. Matching puzzle difficulty (and using within-student comparisons) controls for differences in how hard the puzzles are.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 7.3 Identifying and Controlling Variables 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 7.3 Identifying and Controlling Variables worksheet free for teachers and homeschoolers?

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QCan students practice 7.3 Identifying and Controlling Variables online with instant feedback?

Yes! In addition to this printable worksheet, students can practice 7.3 Identifying and Controlling Variables interactively on our platform with automated grading, instant score tracking, and detailed step-by-step solutions.

QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 7 Science students. It aligns with educational standard SCI.7.3 (Grade 7 science practice focused on identifying and controlling variables.).