# The Scientific Method Steps

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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

The following videos explain the steps of the Scientific Method
1. Asking Scientific Questions
2. Planning and Recording
3. Analyze, Conclude and Evaluate

The Scientific Method Steps
1. Make Observations
2. Ask questions
3. Come up with a hypothesis
4. Testing/Experimentation
5. Draw conclusions

Asking scientific questions
1. Observation
• scientist make observations of the world.

2. Developing a question
• they ask questions.
• they do investigations to collect data to try to answer their questions.
• scientists try to make predictions about the outcome of investigations.

3. Identifying the variables
• anything that might affect the outcome of an investigation is called a variable.
• an independent variable is something that I change.
• a dependent variable is something that changes as a result of the independent variable changing.
• control variables are other variables that affect the outcome, that need to be kept the same in an investigation.

Exercise:
Write down the independent variable, dependent variable and control variables for the following questions.
1. How does the mass of dog food eaten by Fido affect his body mass?
2. How does the size of a ball affect how high it bounces?

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