Free Printable WorksheetScienceGrade 5Science CurriculumSCI.5.85

5.85 Plan Variables and Repeated Trials Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 5 Science worksheet provides structured practice on 5.85 Plan Variables and Repeated Trials. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Plan Variables and Repeated Trials - Which example best identifies independent/dependent variables, controls, and repetition to increase confidence in results? (NGSS SEPs; CCSS: W.5.2)

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 5

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 5.85 Plan Variables and Repeated Trials skill assessments:

Problem 1Difficulty: Mastery

In science class, Quinn sets up a test: Quinn investigates whether the thickness of a jacket changes how warm someone feels after standing outside for 3 minutes. He uses thin, medium, and thick jackets and records a temperature reading on the inside of the jacket with the same thermometer. Which option is the best match for IV, DV, a controlled variable, and repeated trials?

AIV: thickness of the jacket; DV: temperature reading inside the jacket after 3 minutes; Keep thickness of the jacket the same; Do 3 trials for each change and average.

BIV: thickness of the jacket; DV: temperature reading inside the jacket after 3 minutes; Keep time outside and location the same; Do only 1 trial for each change.

CIV: temperature reading inside the jacket after 3 minutes; DV: thickness of the jacket; Keep thermometer and placement the same; Do 3 trials for each change and average.

DIV: thickness of the jacket; DV: temperature reading inside the jacket after 3 minutes; Keep thermometer and placement the same; Do 3 trials for each change and average.

Solution & Explanation:The independent variable is what Quinn changes on purpose (thickness of the jacket). The dependent variable is what is measured (temperature reading inside the jacket after 3 minutes). To make it a fair test, keep other factors the same (for example, same thermometer and placement). Repeating the test 3 times for each setting and averaging makes the results more reliable.

Problem 2Difficulty: Mastery

Fatima tests whether the amount of air in a basketball changes how high it bounces. She sets it to low, medium, and high pressure and measures bounce height. Fatima wants a plan that uses controls and repeated trials. Which procedure changes only one factor, measures the result, keeps other factors the same, and repeats trials?

AChange air pressure in the basketball and also change basketball. Measure bounce height. Do 1 trial for each setting.

BChange only air pressure in the basketball. Measure basketball. Keep drop from the same measured height the same. Run 6 trials for each setting.

CChange only air pressure in the basketball. Measure bounce height. Keep basketball and drop from the same measured height the same. Run 6 trials for each setting and average the results.

DTry one setting of air pressure in the basketball and write down bounce height one time. Then decide the answer.

Solution & Explanation:A strong plan changes only the independent variable (air pressure in the basketball) and measures the dependent variable (bounce height). Other factors like same basketball and drop from the same measured height should stay the same (controls). Doing 6 repeated trials and averaging reduces the effect of random errors.

Problem 3Difficulty: Mastery

Leo wants to test if the amount of baking powder changes how high pancakes rise. He uses the same recipe but changes only the baking powder amount. Leo wants a plan that uses controls and repeated trials. Which plan is the fairest test with a clear independent variable, a measurable dependent variable, good controls, and repeated trials?

ATry one setting of amount of baking powder and write down pancake height/thickness after cooking one time. Then decide the answer.

BChange only amount of baking powder. Measure pancake height/thickness after cooking. Keep batter amount per pancake and pan temperature the same. Run 3 trials for each setting and average the results.

CChange amount of baking powder and also change batter amount per pancake. Measure pancake height/thickness after cooking. Do 1 trial for each setting.

DChange only amount of baking powder. Measure batter amount per pancake. Keep pan temperature the same. Run 3 trials for each setting.

Solution & Explanation:A strong plan changes only the independent variable (amount of baking powder) and measures the dependent variable (pancake height/thickness after cooking). Other factors like same batter amount per pancake and same pan temperature should stay the same (controls). Doing 3 repeated trials and averaging reduces the effect of random errors.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 5 Science students. It aligns with educational standard SCI.5.85 (Plan investigations with clear variables and repeated trials.).