1. Catalyst 9/12/13  Reflect on the “build an 18-inch tower” activity yesterday. Knowing what you know now, write a procedure (list of steps) so that another ‘scientist’ can easily follow it and obtain the same exact result.

2. Agenda 9/12/13  Catalyst  Announcements  Classroom Procedures Quiz – Tomorrow, Friday 9/13/13  Submit signed syllabi  Purchase lab notebook ASAP! (at least 150-page spiral or graphing notebook)  Student Job Assignments  Introduction to the Scientific Method – Tootsie Roll Pop  Discussion

3. Student Jobs!  Earn 20% additional points in your scientific discussion grade.* (If you were supposed to receive 100 points, you’ll receive 120 points instead!) **If you violate a classroom policy, you will NOT receive your extra credit!  You will keep this job for at least one month (or less if you get fired). *Class maintainers will receive 25% more points.

4. Student Jobs!  (3) Class Maintainer: Makes sure that classmates pick up their trash and push their chairs in. (Room 22: All cubby holes and SINKS are empty.)  (2) Equipment Manager: Collects all calculators, goggles, and other equipment an.  (1) Catalyst Collector: Collects Catalyst or other papers.  (2) Paper Passer: Quickly returns graded work to students.

6. Objective 9/12/13 We will be able to identify the parts of the scientific method. 

7. Class Discussion Expectations  No disrespectful language (teasing, name-calling, cursing, etc.)  Speak one at a time.  Address the IDEA NOT the person.  Clarify another student’s response by rephrasing or asking a clarifying question.  Avoid general statements like “all _____ people do______”  Use “I” statements  Take notes to keep track of good ideas that may come up  Be mindful of “air time.”

8. REAL WORLD  Crime scene investigations  Real-life mysteries  Scientific research

9. TODAY’S MYSTERY  How many licks does it take to get to the center of a Tootsie Roll pop? Let’s find out using the scientific method…

10. QuickResearch EC Opportunity – How is food digested?

12. Scientific method  What is the scientific method?  The scientific method is a method that is used to find answers to questions about the world around us.

13. Scientific method  Is there only one scientific method? Some versions have more steps, while others may have only a few. However, they all begin with the identification of a question or problem to be answered based on observation of the world around us. The scientific method provides an organized method for conduction and analyzing an experiment.

14. Parts of sci. method  Part #1: Ask the Question (Problem)  Scientific questions are testable, which means:  They cannot be a yes or no question.  You must be able to run an experiment to test the question.

15. Parts of sci. method  Part #2: Gather Information (Research) . You should ask yourself: What do I know already? What do I not know?  Gather information about the problem before you experiment.

16. Parts of sci. method  Part #3: Form a Hypothesis (Prediction)  A hypothesis is a prediction about the outcome of an experiment.  A hypothesis is an “ if-then ” statement.  A hypothesis has 3 parts:  Situation  Measurable quantities  Prediction  A hypothesis must be testable (you can set up an experiment) and falsifiable (it can possibly be proven false)  If I do this, then this will happen  Example: If I chew 1 piece of big red and 1 piece of 5 gum and record the average size of bubble each produces after 3 trials, then 5 gum will produce the biggest bubble.

17. Parts of sci. method Part #3 continued: Form a Hypothesis  Dependent vs. independent variable 1. Dependent variable: (“the effect variable”)  It is what is being studied  it is what you measure and what is being affected (the effect). 2. Independent variable: (“the cause variable”)  It is what you are changing in the experiment  It is what is affecting the dependent variable

18. Parts of sci. method  Part #4: Test the Hypothesis (Experiment)  An experiment is a clear step-by-step procedure used to test a hypothesis.  There are 3 parts to testing the hypothesis:  Materials = List the quantity and names of supplies and equipment used for the experiment  Procedure = step-by-step process on how experiment was performed  Only one action per step.  Results = You must clearly and accurately record the data you collect.  Data is gathered through observations or experimentation.  Remember, more data you collect, the more reliable your results. REPETITION is key!!!!

19. Parts of sci. method  Part #5: Make Observations ( Record Data )  Observations are things that you can see, hear, taste, smell and touch (the 5 senses).  Qualitative Observation (QL)= descriptions  Quantitative Observations (QN) = measurable things  An inference is when you come to a conclusion based on facts or observations.

20. Parts of sci. method  Part #6: Analyze the Results ( Analysis )  You can analyze your results by doing:  Calculations  Percentages  Averages  Tables  Graphs - bar, line, piece  Must have 4 parts:  Title  Equal intervals (0, 10, 20, 30, etc)  Labels  Units

21. Parts of sci. method  Part #7: Draw Conclusions (Discussion)  It is a statement that sums up what you have learned from an experiment.  In this section include these 5 things:  Restate the lab’s problem  Summarize your results  State if your hypothesis was correct, incorrect, or inconclusive.  Suggestions to improve experiment  Explain how information gained in lab can be applied to real-life situations and how does it relate to major scientific principles, classnotes, or text

22. Parts of sci. method  Part #8: Communicate Results (Publication)  Summarize all the parts of your experiment  You can create different types of write-ups:  Lab worksheet  Lab report  Science journal  Science Poster

23. Parts of sci. method  Part #8: Communicate Results (Publication)  This summary should include the following things:  Introduction/Background Research  Problem  Hypothesis  Materials  Procedure  Observations  Discussion (Analysis of results)  Conclusion  References

24. Exit Slip On a half a slip of paper: Summarize today’s lesson in 3 bullet points

25. Applying sci. method  Step 1: Problem: Which battery lasts longer, Energizer or Duracell?  Step 2:  Step 3:  Step 4:  Step 5:  Step 6:  Step 7:

26. FOCUS leads to MASTERY MASTERY leads to SUCCESS Success in CLASSROOM leads to success in LIFE.

27. mystery  Mr. Brown, who lived with his wife, kept their apartment very clean. He waxed the floors every day and vacuumed all carpet. He also dusted all furniture. One day, he discovered bites on his arm. He does not understand where they came from since he does not have bugs in his house. Where did the bites come from?