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Lesson 1
   
  Presentation: Identifying variables and designing experiments
 

Instructions for the use of the PowerPoint are shown in the notes sections.
   
Lessons 2 and 3
   
  Presentation: Changing the variables
 

This lesson also has five worksheets with it all with the main heading ‘dissolving sugar’. The practical help sheets are designed primarily to be used with lower ability classes or individual students in mixed ability. They can also be helpful if short on time. Extra instructions can be found on the PowerPoint notes sections. The lesson should ideally be run in a double period, though if only singles are available then the planning stage could be done in the first of the two singles and the practical in the second
   
  Dissolvng sugar - amount of water
  Dissolving sugar - type of sugar
  Dissolving sugar - temperature of the water
  Dissolving sugar - planning sheet
  Dissolving sugar - results sheet
 
Lesson 4
   
  Presentation: Identifying the controls and variables
 

This lesson also has the worksheet ‘Identify the controls and variables’ which should be cut up into cards enough for one set per pair. Instructions for the lesson can be found in the notes section on the PowerPoint.
   
 

Identifying the controls and variables worksheet

   
To end any of the lessons ...
   
  Matching pairs game
 

The flash game is designed to test the students understanding of the key words in this topic and could be used at the end of any of the lessons. Ideally it should be run on an interactive white board, and preferably as a competition to find out who can do it the fastest (either individually or in small teams). There is a 60 second time limit on the game.