
Classify controlled investigations
Free printable Grade 5 science worksheet for "Classify controlled investigations" — practice science practices. No-prep, print or assign online.
Grade 5 students apply scientific thinking by learning to classify whether investigations are controlled — that is, whether all variables except one are held constant. Teachers can use this science practices worksheet as a pre-lab discussion tool or as a formative check during a unit on experimental design. Understanding controlled investigations helps students evaluate the validity of conclusions drawn from experiments.
Learning objectives
- Explain what makes an investigation controlled and why this matters
- Classify given investigations as controlled or not based on their design features
- Identify which variables are held constant and which is changed in a controlled study
Answer Key

How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for Grade 5; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Classify controlled investigations” worksheet free?
Yes. “Classify controlled investigations” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Grade 5 (ages 10–11), covering Science practices.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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