364
411
144
254
Whose results are
Tootsie Roll Pop Experiment
1. State the Question: How many licks does it take to get to the center of a tootsie roll pop?
2. Write your hypothesis (What do you think and why?)
3. Test your hypothesis
a. Independent variable ( the cause) b. Dependent variable (the effect) c. Controls
d. Materials f. Procedures
4. Record your data and graph
a. Record the data of 10 other scientist in your table. b. Find the average of all the data.
c. Graph each trial.
6. Publish your results for others to read and criticize
7. Conference! 5. Write your conclusion
a. Restate your question and hypothesis (“In this experiment I was testing to see…; I thought…..”.
b. Is your hypothesis supported or not?
c. What was your results and the average results of your data from others
Tootsie Pop Conference
1. How many licks does it take to get to the center
of the tootsie roll pop?
2. Which institution is the most trustworthy?
3. What new questions does this experiment rises?
4. Do you think we have trustworthy knowledge
The Scientific Method
Know the basic steps of the scientific method.
*
Do some
research
if necessary, to better
understand
the observation or question.
Important Note
Jadaan Googled “grasshopper side holes” and found
out that those holes are called spiracles and that
2.
Make an Inference/Hypothesis
: “You can’t drown a grasshopper
by
putting its head underwater.”
You can’t drown a grasshopper by putting its head
*Write hypothesis as an “
If
, “
then
”, “
because
” statement.
Important Note
3.
Test your hypothesis :
Design an experiment to see if your
hypothesis is trustworthy.
1. Independent variable (the cause)
2. Dependent variable (the effect)
3. Groups (Experimental and control)
4. Controls (things kept the same in both groups)
5. Material list
4.
Record and study your results
: Use data charts and
* As often as possible, record both qualitative and
quantitative observations.
5.
Repeat the experiment over and over
: These are
called “trials”. See if you get the same results. Compare your
results with other scientists who have done the same
“In this experiment, I tested to see if a grasshopper will drown if placed under water head first. My
hypothesis was that the grasshopper would not drown because it does not breath through its head, but holes on its sides called spiracles. My hypothesis was supported. Holding them by their hind legs (so not to cover their spiracles) I placed 10 live grasshoppers underwater head-first for 3 minutes each. Of the 10 grasshoppers that were placed under water, 9 of them did not drown. One drown because its spiracles were accidently covered. This was unfortunate because our intention was not to harm any grasshoppers. I am confident that had the grasshopper’s spiracles not been covered, it would have survived. While the other 9 grasshoppers did not drown, they all went stiff the moment their head was placed underwater. I found that fascinating and wondered if their reaction was because their antennas were wet and unable to sense vibrations which would cause them to move. If I could do this experiment again, I would make sure that all grasshoppers are fairly the same length. The grasshopper that died was noticeably shorter than the others. As a result, its spiracles were probably lower along its abdomen then others. This experiment has lead me to wonder why the grasshoppers went stiff when place head-first in the water?”
7
. Publish your results:
Share your results with others
scientists for criticism and/or confirmation.
8.
Go to Conference
: meet with other scientists to decide if
Conference
If “NO”- go back and
continue to
experiment
If “YES”- we have
trustworthy
Know the basic steps of the scientific method.
Floating Paper Weight Experiment
1. Question: Does the type of paper effect how much weight it can hold on water?
2. Write your hypothesis (Use an If, then, because statement) – 5 pts .
3. Test your hypothesis (Use the Scientific method foldable for parts) – 20 pts
4. Record your data and graph - 20 pts
1. Quantitative data: The number of paper clips each paper holds while on the water.
2. Qualitative data: Record things you noticed during each trial (at least two per trial).
3. Put qualitative and quantitative data into tables.
4. Include the quantitative data of 2 other scientists into your table. 5. Graph your quantitative data.
5. Write your conclusion (Answer the questions in your Scientific method foldable) - 20 pts
6. Publish your results for others to read and criticize (put it on the board). - 10 pts.
7. Have your work peer reviewed by one other scientist. - 10 pts.
