PracticeQuestionsYears 1–7
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Fair tests, results and conclusions

Year 4 · Lower Key Stage 2 · S-WS-LKS2 — Plan fair tests; take repeat readings; record findings; draw conclusions

Draft — awaiting teacher review

Builds on: Forces and magnets (Year 3)

I

Concept Anchor

In a fair test you change only one thing. You measure one thing. You keep everything else the same. Doing a test more than once makes your results more reliable.

Worked example

Which ball bounces highest?

  1. 1.Change: the type of ball.
  2. 2.Measure: how high it bounces.
  3. 3.Keep the same: the drop height and the floor.
  4. 4.Drop each ball 3 times.
II

Guided Check

You test which paper towel soaks up most water. What will you change?

    III

    Independent Diagnostic Practice

    Q1Year 4S-WS-LKS2 — Keep things the same·Fluency·●○○Draft — awaiting teacher review

    Ali tests which ball bounces highest. What must he keep the same?

    Q2Year 4S-WS-LKS2 — Repeat readings·Reasoning·●●○Draft — awaiting teacher review

    Ali drops each ball only once. How could he make his results more reliable?

    Q3Year 4S-WS-LKS2 — Draw a conclusion·Problem Solving·●●●Draft — awaiting teacher review

    Results: tennis ball 60 cm, rubber ball 90 cm, foam ball 20 cm. What can Ali conclude?