Topic Four (1.4): Recording data
Objectives
By the end of this topic, you should be able to:
- design a results table
- present data in a correctly designed results table.
You might also be able to:
- calculate a mean from three repeat measurements.
Introduction
You are now going to complete the ball experiment and record the results that you get.
Working through your coursebook
- Read pages 14–15 of Activate 1.
- Watch this Revision Monkey video on drawing tables (a really important scientific skill):
- This skill sheet shows you how to draw different tables. Make sure that you keep it, as it will help you when you do the required practicals in your Science courses.
COMPLETE - Planning Worksheet (page 3) Download COMPLETE - Planning Worksheet (page 3)
- Now carry out the experiment with the ball that you planned in Topic 1.3. You don’t have to use a metre ruler as it suggests in the worksheet above. Just make sure that you do the experiment away from anything breakable. Complete page 3 of the planning worksheet above and record your data. (You can draw your own table if you wish – there is one on page 15 of Activate 1 that you could copy or adapt.)
When you are carrying out a practical activity, it is important to repeat the experiment at least three times. Having more than one result helps to reduce odd results caused by human error or factors that have not been controlled.
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- Take at least three repeat measurements and then calculate the mean height. Watch these video clips, which show you how to calculate a mean and how to identify an anomalous result:
WATCH - WS1 Mini clip 5: Recording data (Kerboodle) Links to an external site.
- Watch this video on how to spot anomalies (odd results) in tables and graphs:
Review
Complete Summary Questions 1-3 on page 15 of Activate 1. Check that you can calculate the mean by answering Summary Question 2. Remember: you can use a calculator for Science.
Support activity for this topic
Still a bit unsure about how to calculate a mean?
READ - How to find the mean (Mathsisfun) Links to an external site.
Check your answers
CHECK - Planning Worksheet - Specimen Answer (page 3) Download CHECK - Planning Worksheet - Specimen Answer (page 3)
CHECK - Student Book Answers - Working Scientifically (Kerboodle) [Not available on sample course]