Western Governors University

C683: Natural Science Lab

A study guide to WGU's C683, the general education course on using the scientific method to design and run your own experiment.

Updated October 2026 · 5 min read

C683 Natural Science Lab is a Western Governors University general education course that introduces the scientific method through an experiment you design yourself.

WGU describes the course as an introduction to using the scientific method and engaging in scientific research to reach conclusions about the natural world.

You design and carry out an experiment to investigate a hypothesis by gathering quantitative data, and you research a natural science topic using academic sources; WGU's current program guides describe this as researching a specific ecosystem.

The guides list it at two competency units in programs such as software engineering, cloud computing and network operations.

Many students taking C683 come from technology degrees and have not done lab science in years. The challenge is designing a fair test and writing it up like a scientist.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
Course codeC683
LevelUndergraduate general education
Competency units2 (per WGU IT program guides)
Subject areaScientific method, natural science
Typical workYour own experiment with quantitative data, plus source-based research

What C683 Covers

Competency (summarized)What it means in practice
Execute scientific inquiry through experimentationDesigning and running a controlled experiment
Draw conclusions from research and inquiryUsing your data and academic sources to reach supported conclusions

Designing a Good Experiment

A Testable Hypothesis

A hypothesis predicts how the independent variable affects the dependent variable, with a reason. It must be possible to measure the outcome with numbers.

Example: "Plants like music" cannot be tested as written. "Bean seedlings watered with salt solution (0, 1 and 2 g per 100 mL) will grow less in height over 14 days as salt concentration increases, because salt reduces water uptake" names the variables, levels, measurement and time frame.

Variables and Controls

Change only the independent variable, measure the dependent variable and keep everything else constant: light, temperature, container size and so on. A control group provides the baseline for comparison.

Replication and Quantitative Data

Repeat each condition several times and record measurements in a table with units. Averages from repeated trials are more reliable than single results.

Typical Components and How to Approach Them

WGU assesses competency through performance assessments or objective assessments. Check your course page for the current format and template. A lab investigation typically includes:

ComponentWhat it testsHow to approach it
Question and hypothesisTestable predictionName variables and expected direction
MethodFair, repeatable designList materials, steps and controls
Data and analysisQuantitative reasoningTable, averages, a clear graph
Conclusion and researchEvidence-based reasoningCompare results with academic sources

Writing up Your Results

Your conclusion should answer the question with your data, not with what you hoped to find:

A result that does not support your hypothesis is still valid science if the method was sound and the reasoning is honest. Our lab report guide covers structure in more detail.

Experiment Ideas That Work at Home

Choosing a manageable experiment is half the battle. Good options have one clear variable, numerical results and safe, cheap materials:

IdeaIndependent variableMeasured result
Seed germinationWater temperature or salt levelPercentage germinated, seedling height
DissolvingWater temperatureTime for a sugar cube to dissolve
EvaporationSurface area of containerVolume lost over 48 hours
Plant growthHours of lightHeight or leaf count after two weeks

Check your task instructions first, since the experiment must fit the natural sciences and any requirements in the template. Allow time for repeated trials, and avoid anything involving hazardous chemicals, heat sources you cannot control or living animals.

Presenting Your Data

Quantitative data need clear presentation. Put the independent variable on the x-axis and the dependent variable on the y-axis, label both with units and give the graph a descriptive title. Use a bar chart for separate categories and a line graph for continuous changes, such as growth over time.

Show averages from repeated trials and, if possible, the range, so readers can see how consistent your results were. Refer to the graph in your text and describe the trend in words with key numbers.

Where Students Get Stuck

Study Tips for C683

How We Help with C683

Send the task instructions, rubric, your plan or draft and any evaluator comments. A science tutor helps you refine your hypothesis and design, explains how to analyze and graph your data, and reviews your write-up for clarity and scientific reasoning.

GradeEssays is independent of Western Governors University. The experiment and data must be your own: we never invent data or results, and we never log in to student portals. We offer guidance, feedback and editing within WGU's academic integrity rules, with free revisions within the scope of your original request.

Design and Write up a Clear Experiment

Share your C683 instructions, plan and data. A science tutor reviews your design and write-up and explains improvements.

Start My C683 Help

Free revisions · Full refund if late · Written from scratch for your order

Frequently Asked Questions

What do I do in C683?

You design and carry out an experiment that tests a hypothesis with quantitative data, and research a natural science topic using academic sources.

How many competency units is C683?

WGU's IT program guides list Natural Science Lab at two competency units.

What makes a good C683 experiment?

A simple, safe design with one independent variable, measurable results and repeated trials.

What if my results do not support my hypothesis?

Report them honestly and discuss why. A sound method matters more than the outcome.

Can you give me data for my experiment?

No. Data must come from your own experiment. We help you plan, analyze and write up.

Is GradeEssays affiliated with WGU?

No. We are an independent service with no connection to Western Governors University.