1. 8 th Grade Bell Ringer 08/15/2014 oEssential Question: How do we use the scientific method to solve problems in the natural world? oObjective: oI can draw conclusions based on the results of my lab experiment. oI can describe and give examples of variables oI can identify the observation, hypothesis, experiment and conclusion components in a lab experiment. oBell Ringer: oWhich brand of Chewing gum makes the biggest bubble, Double Bubble, Extra, or Bubblicious? oWrite a hypothesis statement for this problem. oIdentify the independent variable. oIdentify the dependent variable.

2. Come Fly With Us Lab

3. Problem: How will changing the direction that the paper helicopter blades are folded affect the “flight” of the helicopter?

4. Hypothesis Write an if / then answer to your problem question.

5. Procedure 1.Once you have made your hypothesis, you should test it for accuracy. Stand on a chair and hold your helicopter by the “T” at shoulder level. 2.Drop the helicopter and note whether it spins clockwise or counterclockwise. Repeat this step 5 times.

6. Procedure 6.Refold the blades so that the square on the section Y shows you when you look down on top of the helicopter. 7.Stand on a chair and hold your helicopter by the top of the “T” at shoulder level. 8.Drop the helicopter and note whether it spins clockwise or counterclockwise. Repeat this 5 times.

7. Analysis Complete analysis and conclusion questions Read the excerpt under the Analysis heading. –YOU MUST ANSWER EACH QUESTION IN COMPLETE SENTENCES!!

8. Exit Slip 08/15/2014 Is this an example of a qualitative or quatitive observation? –This sugar tastes sweet