Controlling variables (age 11+)
Form a testable scientific hypothesis linking an independent variable to a predicted outcome, plan a full investigation identifying independent, dependent, and control variables, sample size, and risk assessment
Lesson
Set out your lesson
“Controlling variables (age 11+) means practising the idea at the table with a simple hands-on check. We will demo once, then your child tries.”
Bring to the table
- A simple fair-test kit (cups, spoons, or rulers)
- Results table on paper
Extra for the adult
Worked example. Question: Which melts faster? Change: ice in warm vs cool water. Same: ice size.
Optional challenge. For Controlling variables (age 11+), add one harder example after success.
What to notice. Keep one parent note: examples tried; results; support used. This session samples Controlling variables (age 11+), not mastery.
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1 approach
Controlling variables (age 11+) means practising the idea at the table with a simple hands-on check. We will demo once, then your child tries.
Materials: A simple fair-test kit (cups, spoons, or rulers); Results table on paper. 1. Say the goal of Controlling variables (age 11+) in plain words once. 2. Adult names the question, the one changed variable, and what stays the same. 3. Child runs three short trials, changing only one thing, and records results. 4. Fresh check: one fresh fair-test statement (what changed / what stayed same). Record and stop. Done: three trials in a table with one changed variable. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.
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Practice this concept
Start practiceControlling variables (age 11+) practice
Practice key ideas from Controlling variables (age 11+).
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
US EPA · Practice link — not the full lesson
Students
Before you open · source notes
Students supports Controlling variables (age 11+). An adult previews and guides; this is a learning page, not a scored quiz.
Free educational page, no sign-in required for the tested path.
Before you openAsk the learner one fact they learned and one question they still have.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public US EPA page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
US EPA. “Students.” External page; Gakuva does not copy, host, embed, or redistribute materials.
Unknown — link only
Check understanding
- Writes a hypothesis in the form 'I predict that [IV] will affect [DV] because...' supported by scientific reasoning
- Identifies and labels the independent variable, dependent variable, and at least three control variables
- Plans repeat readings and an appropriate sample size, and identifies relevant hazards with control measures
“If your child wanted to investigate whether temperature affects how quickly sugar dissolves, could they write a clear prediction, state exactly what they would change and measure, list three things to keep the same, and identify any safety steps?”
Curriculum record
- Type
- Meta
- Subject
- Science
- Domain
- Scientific Inquiry
- Age range
- Ages 11–12
Standards