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# DEPENDENT & INDEPENDENT VARIABLES

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### DEPENDENT & INDEPENDENT VARIABLES

1. 1. UNDERSTANDING DEPENDENT & INDEPENDENT VARIABLES CHAPTER 0NE: INTRODUCTION TO www.sciencetutors.zoomshare.com
2. 2. CIRCUS OF EXPERIMENT Objectives To recap and ensure that the independent and dependent variables are placed correctly for a range of experiments in tables. To record data from an investigation.
3. 3. Starter Activity <ul><li>Do plastic bags of different colours have the same strength </li></ul>Learning is fun when behaviour is good
4. 4. <ul><li>Do different types of plants grow to the same size </li></ul>Want to maximise participation? Listen, Focus and Contribute meaningfully.
5. 5. <ul><li>Does ice melt quickly or slowly in water at different temperatures </li></ul>Listen, Learn and Participate
6. 6. DEPENDENT VARIABLE In an experiment that which is supposed to be changed by the independent.
7. 7. INDEPENDENT VARIABLE In an experiment that which is supposed to be manipulated by you. The variable manipulated by the experimenter.
8. 8. On a simple X-Y coordinate line graph the independent variable is always on the X-axis.  DATA ANALYSIS
9. 9. <ul><li>List two independent variables that could affect how quickly or slowly the ice will melt. Why are the variables independent? </li></ul>Listen, Learn and Participate www.sciencetutors.zoomshare.com
10. 10. YOUR TASK <ul><li>Independent Variable: A variable in an experiment which is altered by the experimenter. </li></ul><ul><li>Write down a list of variables that will be altered by you if asked to investigate: </li></ul><ul><li>Photosynthesis in plants </li></ul>www.sciencetutors.zoomshare.com
11. 11. MOVEMENT OF OBJECTS <ul><li>You are investigating the movement of objects on ramps. What variables will you change? And what variable will you keep the same? </li></ul>www.sciencetutors.zoomshare.com
12. 12. Electromagnets <ul><li>How To Make an Electromagnet </li></ul><ul><li>http://www.youtube.com/watch?v=ckSNA0MlcBE </li></ul>Want to maximise participation? Listen, Focus and Contribute meaningfully.
13. 13. Investigating Factors Affecting the Time Taken For Indigestion Tablet To Dissolve <ul><li>Can you plan this experiment and draw a table with two columns and write down the variables on either side of the columns. </li></ul>
14. 14. YOUR TABLE Explain why the variables you have chosen are dependent and independent Dependent Variable Independent Variable