Mr. Lambert Integrated Science 1A Trimester 1, 2014 Scientific Method Mr. Lambert Integrated Science 1A Trimester 1, 2014

1. Come up with a hypothesis for the following question: Bell Ringer 1. Come up with a hypothesis for the following question: Do wounds heal faster when they are covered by Band-Aids? 2. How could you test this?

Agenda Bellringer Learning Targets Scientific Method Scenario activity Design your own experiment Exit Slip

Learning Targets On your Bell Ringer Sheet, write the following: I can define important vocabulary about the Scientific Method.

The Scientific Method Ask a Question Make a Hypothesis Design an Experiment Analyze Data Draw Conclusions

1. Observation Looking at something very closely Example: Hmmm….fish in small bowls are small, but fish in big bowls are big. Look for patterns!

2. Ask a question What are you curious about? Example: Why are fish in fishbowls small, but fish in fish tanks big?

A prediction that can be tested using the scientific method 3. Form a hypothesis A prediction that can be tested using the scientific method Example: Fish in large environments will grow to be larger in size.

Is state as FACT, not feeling or thought or belief 3. Form a hypothesis Key points: Can be TESTED Is state as FACT, not feeling or thought or belief

4. Design an experiment A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. Example: I place one goldfish in a small bowl and one goldfish in a big tank. After three months, I compare their sizes. Good experiments have several components!

Experiment Independent variable – what the experimenter changes Example: The liquid I feed the plants Dependent variable – What changes as a result of changes made in the independent variable Example: Plant growth Control - group that serves as the standard of comparison Example: Feed plant water

Analyze results and draw conclusions I compared the size of my two fish after 3 months and the fish in the large tank was bigger! My hypothesis was correct! Hypothesis wrong = NEW HYPOTHESIS Hypothesis right = SHARE RESULTS!

Video! Big bang theory scientific method http://www.youtube.com/watch?v=_7sSuhQ1_24

Individually determine the following: Scenario activity Individually determine the following: Hypothesis Independent variable Dependent variable Experiment to test the hypothesis Conclusion

Scenario #1 In a science fair, Tina asks the question “Does caffeine increase the heart rate of an earthworm?” In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm’s skin and measures the rate again. In this test, the heart rate is 68 bpm.

Scenario #2 Bart believes that mice exposed to radiowaves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice near a radio for 5 hours. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the radiowaved mice were able to push the block away. 7 out of 10 of the other mice were able to do the same.

Design your own experiment! Question: Which is stronger, a Kleenex or no-name tissue brand? Come up with a hypothesis. Design an experiment using the following materials: Cup/glass jar Rubber band Pennies/washers/weights Two types of tissues What is the independent variable, dependent variable, and control? What is your conclusion? What is your evidence for this conclusion?

Exit Slip Does the hormone estrogen increase the milk yield of dairy cows? Come up with a hypothesis for this questions. Design an experiment to test your hypothesis.