CBA 1: Extended Experimental Investigation

The CBA 1 Extended Experimental Investigation (EEI) is a 3-week project where you follow the scientific method to form a hypothesis, conduct an experiment, and report on your findings. It is less about the complexity of the experiment and more about demonstrating your ability to plan, analyse, and reflect on the data.

The project is broken down into four key stages:

1. Questioning and Predicting (Week 1)

• Pick a topic: Brainstorm simple, interesting science questions. (e.g., does the type of fabric affect how long it stays warm? Or do different drinks affect how fast yeast respires?)

• Research: Find background theory related to your question and note your sources.

• Form a Hypothesis: Create a clear prediction of what will happen and justify why you think so.

2. Planning and Conducting (Week 1 to 2)

• Plan your method: Decide exactly how you will make it a fair test by identifying your variables.

• Safety & Equipment: List all the equipment you need and outline any safety risks (e.g., wearing safety goggles for chemicals).

• Run the experiment: Carry out your investigation, gather accurate raw data, and record it in a neat table.

3. Processing and Analysing (Week 2 to 3)

• Crunch the numbers: Calculate averages or perform any necessary equations.

• Visualise the data: Display your results using a suitable graph or chart (e.g., bar chart, line graph).

• Explain the trends: Describe the relationships between variables, state your conclusion, and explain any strange/anomalous results.

4. Reflecting and Reporting (Week 3)

• Evaluate: Discuss if your experiment design worked, limitations in your data, and what you could improve.

• Present: Choose your preferred format to submit your project. You do not just have to write an essay. You can use:

  • A written report

  • A PowerPoint slide deck

  • A poster

  • A video or podcast