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Steps 3: Experiment: You must now design an experiment to test your hypothesis to see if it is right or wrong. It is very important that you make certain that in planning your experiment that you have only one variable and the rest of the conditions remain constant. Remaining constant means that you make certain it is done exactly the same way each time. For example:If you were testing the effect of light through colored cellophane on plant growth, the only variable that you will change will be the colors of paper. You will keep constant all other factors such as type and size of plant, amounts of water and nutrients, amount of light, temperature, etc. You would also use a control in this experiment and leave one light uncovered to show what would happen under “normal” conditions. If you were testing the effect of rock music on heart rate, your variable would be the rock music. All other aspects of your experiment such as room, position of person, no other stimuli, length and volume of music, etc. must be the same. Think carefully through the experiment and then write the procedures for your experiment. This is the procedures part of your backboard. This description of the experiment must be very detailed; tell everything you would do and describe the process thoroughly so that someone else could follow it and repeat the experiment. Also, describe what you will do to measure the results of your experiment. You may write this in paragraph format or list the steps numerically. Also, you will need to list, in detail, all the materials needed for the experiment. Make certain that you give sizes and amounts in your materials list. The materials list and procedures must be handwritten for your logbook and typed for your board. Materials: Procedure: (Minimum 10 Steps) Please number each step. Independent/Manipulated Variable(what you change in your test): Dependent/Responding Variable(what you measure in your test): Constants (what you keep the same in your experiment): Control (a standard to measure the experiment against): |
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