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Designing Your Investigation: The HARDER Framework

Part of Physical Geography Fieldwork — GCSE Geography

This deep dive covers Designing Your Investigation: The HARDER Framework within Physical Geography Fieldwork for GCSE Geography. Revise Physical Geography Fieldwork in Fieldwork for GCSE Geography with 0 exam-style questions and 20 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 4 of 16 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

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📋 Designing Your Investigation: The HARDER Framework

Before you collect a single piece of data, you need a clear investigation design. Examiners expect you to be able to describe — and justify — every aspect of your design. The HARDER framework is a reliable structure for this:

H — Hypothesis: a specific, testable prediction that your investigation will attempt to confirm or refute. A hypothesis must be specific enough to be tested and must make a clear geographical prediction. For example: "River velocity will increase with distance downstream because greater discharge and reduced channel friction increase the efficiency of the flow." Compare this to a vague aim: "I am going to investigate rivers." The hypothesis tells you exactly what you expect to find and why — so you can test it.

A — Aim: the broader enquiry question that your hypothesis fits inside. For example: "To investigate how river channel characteristics change downstream in line with the Bradshaw Model." The aim is wider than the hypothesis — it may encompass several separate hypotheses about velocity, channel size, and bedload.

R — Risk assessment: a systematic identification of hazards, the risk level each poses, and the control measures you will take to reduce the risk. This is mandatory before all fieldwork. Rivers are particularly hazardous environments — slipping on wet rocks, entering fast or deep water, and flash flooding are all genuine risks. You must be able to describe at least three hazards and their control measures in the exam.

D — Data collection method: which instruments you will use, how you will take each measurement, and why. Each method choice must be justified — why this method, and not an alternative?

E — Equipment: the specific tools needed for each measurement (tape measure, metre ruler, flow meter, clinometer, ranging poles, stopwatch, Powers Roundness Scale, data recording sheets).

R — Results presentation planned: before you collect data, decide how you will display it. This ensures you collect data in a format that can be graphed. A scatter graph for velocity vs distance downstream; a line graph for pebble size vs distance; a cross-section profile for each site.

A well-designed investigation also specifies how many sites you will use and why. For a river study, 5–8 sites are typical for a GCSE investigation. Fewer sites mean the pattern is harder to detect; more sites require more time and may not be practical in a school day.

Designing Your Investigation: The HARDER Framework

📋 Designing Your Investigation: The HARDER Framework

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