SAT1) Practical

Hypothesis and purpose - be able to write examples.

Independent, dependent and derived variables - be able to state these variables for an example practical.

• Factors kept constant - be able to identify and state how and why they should be kept constant.

• Sample size - must be able to state the sample size and state why increasing sample size is important

Explain why repetition is important

: Colo -be abe todentiy and describe a control and state w

control is important.

Results of investigations are represented in a well-organised way to allow them to be interpreted.

Scientific information can be presented using different types of symbols and representations.

• Tables and graphs - know rules and be able to draw a good table or graph.

Be able to perform calculations such as range and average

Analysis of the results of investigations allows them to be interpreted in a meaningful way.

Critical evaluation of procedures and data can determine the meaningfulness of the results.

• Errors - identify and describe possible sources of random and systematic errors.

Know that random errors reduce precision and systematic errors reduce accuracy.

• Know the reliability is affected by sample size.

Improvements - be able to suggest improvements to a practical and suggest why they are improvements.

or inquiry question.

Conclusions can be formulated that relate to the hypothesis

Effective scientific communication is clear and concise.

• Conclusion - be able to state whether results support hypothesis or not.

• Conclusion - limitations, validity