

What is the difference between a mistake and an error? What is accuracy and precision? How does this link to uncertainty? All this and more covered in this comprehensive lesson with questions and answers! This is a Year 12 A level lesson for Edexcel International Unit 2 – WCH12, but it can also be used for all UK exam boards. All the slides in this lesson are fully animated and include answers to every mini plenary question and exam question. The breakdown of the slides (which are best opened on Microsoft PowerPoint) is as follows:
Slide 1 - Title and 5-minute starter. The starter is a grid of four questions entitled ‘last week, last lesson, today’s learning and future learning’. Use this generic slide for all of your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see thumbnail image)
Slide 3 – Think pair share (TPS) question: what is the difference between a mistake and an error? Use this as a hinge question.
Slide 4 – Two simple definitions of error and mistake are offered to students. These will be built upon in subsequent slides
Slides 5 – 9: Students will be presented with a series of scenarios and they must decide whether the scenarios represents a mistake or an error. The answer animates on the screen as you click.
Slide 10 - Another think pair share question: what is the difference between accuracy and precision?
Slides 11 – 18: The answer to the think pair share question will be explored. Students will be given a set of titration data and a correct title and will be guided through analysis of the results, identifying which students had accurate results, which students have precise results, etc.
Slide 19 - the definition of error accuracy and precision are presented to students on this slide Enter
Slide 20 - 28: Exam questions with mark scheme answers (included with the purchase of this resource)
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