Designing an ExperimentBuilding an experiment that can actually answer the question.PhysicsFrom question to method.1State the relationship to testWhich quantity depends on which, and what form is predicted.2Identify the variablesOne independent, one dependent, everything else controlled.3Choose the range and intervalAt least eight values spanning a wide enough range to see thetrend.4Select instruments by resolutionMatch the resolution to the precision the question needs.5Plan repeatsEnough to average out random error and spot anomalies.6Assess the risksIdentify hazards and the control for each before starting.The commonest design fault is too narrow a range: the relationshiplooks linear over any small enough interval.Designing an Experimentlearnposters.com
Designing an Experiment — printable physical science wall chart from LearnPosters. Free vector PDF, US Letter and A4.

Designing an Experiment, step by step

From question to method.

  1. State the relationship to testWhich quantity depends on which, and what form is predicted.
  2. Identify the variablesOne independent, one dependent, everything else controlled.
  3. Choose the range and intervalAt least eight values spanning a wide enough range to see the trend.
  4. Select instruments by resolutionMatch the resolution to the precision the question needs.
  5. Plan repeatsEnough to average out random error and spot anomalies.
  6. Assess the risksIdentify hazards and the control for each before starting.

The commonest design fault is too narrow a range: the relationship looks linear over any small enough interval.

Questions about the Designing an Experiment poster

What’s on the Designing an Experiment poster?
6 numbered steps. From question to method. State the relationship to test — Which quantity depends on which, and what form is pr…; Identify the variables — One independent, one dependent, everything else controlled.; Choose the range and interval — At least eight values spanning a wide enough range to…; Select instruments by resolution — Match the resolution to the precision the question…; Plan repeats — Enough to average out random error and spot anomalies.; Assess the risks — Identify hazards and the control for each before starting.. The commonest design fault is too narrow a range: the relationship looks linear over any small enough interval.
Who is the Designing an Experiment poster for?
Designing an Experiment belongs to the Physics section rather than to a school year, because physical science is not something one grade owns. Anyone learning methods can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Designing an Experiment poster?
Decide what you are varying, what you are measuring, and what you are holding fixed. A wall chart earns its place by being glanceable from where the work is happening, so Designing an Experiment belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.
What other posters go with Designing an Experiment?
Accuracy & Precision, Analysing Results and Dimensional Analysis sit alongside Designing an Experiment in the Physics section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Accuracy & PrecisionAnalysing ResultsDimensional Analysis
Is the Designing an Experiment poster free to download and print?
Yes. Designing an Experiment downloads as a free PDF with no account, no email and no watermark, like everything else in the Physics section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Designing an Experiment poster print at?
Designing an Experiment is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Designing an Experiment loses nothing.Printing guide

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