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# 6.1 Scientific Method

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This is a middle school grade 6 lesson on the scientific method

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### 6.1 Scientific Method

1. 1. SCIENCE PROCESS SKILLS PP. 4-8 ALSO P. 646-647 REVIEW THESE TERMS HYPOTHESIS OBSERVATIONS DATA INDEPENDENT VARIABLE (0R MANIPULATED) DEPENDENT VARIABLE (OR RESPONDING) CONSTANT INFERENCES
2. 2. HYPOTHESIS <ul><li>AN EDUCATED GUESS OR THE PREDICTION THAT IS BASED ON YOUR OBSERVATION </li></ul><ul><li>CAUSE AND EFFECT RELATIONSHIPS </li></ul><ul><li>A SPECIAL PREDICTION THAT FORECASTS HOW THE INDEPENDENT VARIABLE WILL AFFECT THE DEPENDENT VARIABLE </li></ul><ul><li>IF, THEN, STATEMENT </li></ul>
3. 3. YOU TRY IT! <ul><li>WRITE A HYPOTHESIS FOR THE FOLLOWING EXPERIMENT: </li></ul><ul><li>JOHN WANTS TO KNOW IF THE SIZE OF THE PAPER AIRPLANE’S WINGS WILL CHANGE THE DISTANCE THAT THE PLANE WILL FLY. </li></ul>
4. 4. First, identify the independent variable. <ul><li>What is the independent variable: </li></ul><ul><li>The size of the paper airplane’s wings </li></ul><ul><li>Now identify the dependent variable: </li></ul><ul><li>The distance the plane will fly is the dependent </li></ul><ul><li>variable. </li></ul>
5. 5. What is your hypothesis? <ul><li>Write your hypothesis. </li></ul><ul><li>If the size of the paper airplane’s wings increase, then the distance the plane flies will increase. </li></ul>
6. 6. WHAT DO I ALREADY KNOW? <ul><li>HAVE STUDENTS COMPLETE THE WARM UP SCIENTIFIC INQUIRY </li></ul><ul><li>PART 1 </li></ul><ul><ul><li>PUT THE STEPS OF THE SCIENTIFIC METHOD IN PROPER ORDER. </li></ul></ul><ul><li>PART 2 </li></ul><ul><ul><li>MATCH THE FOLLOWING TERMS IN THE CORRECT ORDER. </li></ul></ul>
7. 7. MATCH Reread pp 4-8 <ul><li>HYPOTHESIS </li></ul><ul><li>CONTROL </li></ul><ul><li>VARIABLE </li></ul><ul><li>EXPERMENT </li></ul><ul><li>CONCLUSION </li></ul><ul><li>THEORY </li></ul><ul><li>DATA </li></ul>
8. 8. INFERENCES <ul><li>An inference is an explanation for what we have observed. It explains what might be happening. </li></ul><ul><li>An inference must be logical. </li></ul><ul><li>Inferences can be changed as you get more information. </li></ul>
9. 9. What inference can you make? <ul><li>You come into the classroom and you observe someone’s books are on your desk. </li></ul><ul><li>What inference can you make? </li></ul>
10. 10. Variables <ul><li>The part that changes in an experiment is called a variable . </li></ul><ul><li>Independent variable is what the scientist or you change in an experiment. </li></ul><ul><li>Dependent variable is the difference the scientist or you measure after making the change. </li></ul><ul><li>A Constant variable is what the scientist make sure stays the same so the experiment is a fair test. </li></ul>
11. 11. You Try It! <ul><li>Jan counted the leaves on each of three plants. Then she put one plant under a blue light bulb, another plant under a yellow light bulb, and a third plant under a white light bulb. She kept all three lights on from 6:00 a.m. to 9:00 p.m. After 2 months, she counted how many leaves each plant had. </li></ul><ul><li>Name the independent variable, the dependent variable and the constant </li></ul>
12. 12. Check your answers! <ul><li>Independent Variable: the color of the light </li></ul><ul><li>Dependent Variable: the number of leaves on the plant. </li></ul><ul><li>Constants: could be the kind of plants, the soil in the plant, the amount of water, the pot size, temperature, the wattage of the light bulb, or </li></ul><ul><li>the distance the light is from the plant. </li></ul>
13. 13. HERE IS AN EXPERIMENT TO TRY FOLLOW THE PROCEDURE MATERIALS: <ul><li>TRY THIS WITH YOUR CLASSMATE OR PARTNER </li></ul><ul><li>OBTAIN TWO COINS, A PENNY AND A QUARTER. </li></ul><ul><li>A CONTAINER OF WATER ( A BEAKER) </li></ul><ul><li>TWO EYE DROPPERS </li></ul>
14. 14. Write a Hypothesis about your science experiment with the penny and quarter. <ul><li>Hypothesis: </li></ul><ul><li>What is the independent variable? </li></ul><ul><li>What is the dependent variable? </li></ul>