Struggling to end your lab report with impact? Your science lab report conclusion isn’t just a formality—it’s your chance to show what you’ve learned, reflect on your findings, and link it all back to your hypothesis. Whether you're writing for biology, chemistry, or physics, this quick guide will help you write a clear, confident, and effective lab report conclusion.
🔬 What to Include in a Lab Report Conclusion
An effective science lab conclusion should:
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Restate the experiment’s purpose and main objective
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Summarize your results and whether they support your hypothesis
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Explain what you learned during the experiment
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Identify errors or uncertainties that may have affected your results
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Suggest future experiments or next steps for deeper research
✍️ Step-by-Step: How to Write Your Lab Conclusion
Review the Assignment Requirements
Before writing, double-check what your teacher or lab sheet asks for. Make a quick list of goals—like demonstrating the scientific method, analyzing data, or identifying patterns.
Revisit Your Introduction
Re-read your intro and hypothesis to stay aligned. Your conclusion should tie everything together—so refer back to your original research question and purpose.
Use the RERUN Method (Simple but Powerful)
Structure your conclusion using the RERUN formula:
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Restate the purpose of the experiment
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Explain what you did (briefly summarize the procedure)
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Results: Describe what you found and how it supports or contradicts your hypothesis
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Uncertainties: Mention any variables or issues that may have affected accuracy
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New: Note any new questions or ideas for future research
This format works well across all science subjects and helps you stay organized.
Mention What You Learned
Go beyond the results. Add a sentence or two explaining what concept or process you better understand now. This shows you absorbed the lesson and connected theory with practice.
Summarize the Procedure and Variables
Briefly explain what you did, including the manipulated (independent), responding (dependent), and controlled variables. Keep it short—just enough to refresh the reader’s memory.
Highlight the Key Results
Skip the raw data—just give the highlights. Use averages, trends, or ranges to summarize your findings. For example:
“The data showed that plants exposed to blue light grew 30% taller than those under red light.”
State Whether the Hypothesis Was Supported
Be clear: was your hypothesis right or wrong? Say it directly.
“The results supported the hypothesis.”
“The hypothesis was not supported, but further testing is recommended.”
Explain Why It Was or Wasn’t Supported
Help the reader understand the reasoning. Did unexpected variables change the outcome? Did your data match your predictions? Explain the “why” behind your conclusion.
✅ Final Paragraph:
In short, writing a good lab report conclusion means summarizing your goal, reporting your results, stating whether your hypothesis was supported, and showing what you learned—all in a clear and thoughtful way. Whether you're in middle school, high school, or college, this guide can help you write science lab conclusions that make the grade.
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