Know Apply Individual skills Integration Understand principles Skills Strategy Choose a suitable range for Explain why having a large the independent and range or many readings leads dependent variable to accurate data Gather sufficient data for the Describe the factors that investigation and repeat if influence the choice of and appropriate Choose range, interval, interval for the variables readings Prepare a table with space to record all measurements Apply sampling techniques if appropriate Check that the measuring instrument can measure the complete range of the Test suitability of independent variable measuring instruments Check you can detect differences in the dependent variable Use the measuring instrument correctly Carry out the method carefully and consistently Gather data, minimising errors See if repeated measurements are close Remove outliers and calculate mean of repeats Key words Range The maximum Control group Those that are and minimum values of a not exposed to the factor being variable tested Interval The gap Repeatable When repeat between the values of the readings are together independent variable
Know Individual skills Integration Apply Understand principles Skills Strategy Choose a suitable range for the independent and dependent variable Gather sufficient data for the investigation and repeat if appropriate Prepare a table with space to record all measurements Apply sampling techniques if appropriate Choose range, interval, readings Explain why having a large range or many readings leads to accurate data Describe the factors that influence the choice of and interval for the variables Check that the measuring instrument can measure the complete range of the independent variable Check you can detect differences in the dependent variable Test suitability of measuring instruments Use the measuring instrument correctly Carry out the method carefully and consistently See if repeated measurements are close Remove outliers and calculate mean of repeats Gather data, minimising errors Key words Range The maximum and minimum values of a variable Interval The gap between the values of the independent variable Control group Those that are not exposed to the factor being tested Repeatable When repeat readings are together
AQA-KS3-SCIENCE-09-CD.DOCX