warm up 1.write a detailed procedure on how to make a peanut butter and jelly sandwich. the...
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Warm UpWarm UpWarm UpWarm Up
1. Write a detailed procedure on how to make a peanut butter and jelly sandwich.
The following materials are available to you to make your sandwich:
• Peanut Butter• Jelly• Bread• Knife
ReviewReview
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ReviewReview
A zoologist questioned the ability of baby cubs raised in a zoo to survive in a wild environment. She believed the cubs raised in captivity had lost their fear of predators. To test her idea, she placed 15 captivated young cubs and 15 wild young cubs of the same age into separate but identical cages. She then placed a clear piece of Plexiglas in each cage. In each cage, she placed the cub on one side of the Plexiglas and a large predator, a mountain lion, on the other side of the Plexiglas. She then recorded the amount of time it took the young cub to move to the back of the cage and away from the mountain lion. She found that the captivated cubs from the zoo were much slower in moving away. This led her to believe the caged cubs have less fear of predators than do wild cubs.
A zoologist questioned the ability of baby cubs raised in a zoo to survive in a wild environment. She believed the cubs raised in captivity had lost their fear of predators. To test her idea, she placed 15 captivated young cubs and 15 wild young cubs of the same age into separate but identical cages. She then placed a clear piece of Plexiglas in each cage. In each cage, she placed the cub on one side of the Plexiglas and a large predator, a mountain lion, on the other side of the Plexiglas. She then recorded the amount of time it took the young cub to move to the back of the cage and away from the mountain lion. She found that the captivated cubs from the zoo were much slower in moving away. This led her to believe the caged cubs have less fear of predators than do wild cubs.
Answer the following questions:
1.What is the problem or question?
2.What is an appropriate hypothesis for this experiment?
3.What is the independent variable?
4.What is the dependent variable?
5.What is the experimental group?
6.What is the control group?
Answer the following questions:
1.What is the problem or question?
2.What is an appropriate hypothesis for this experiment?
3.What is the independent variable?
4.What is the dependent variable?
5.What is the experimental group?
6.What is the control group?
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Try AgainTry AgainTry AgainTry Again
1. Write a detailed procedure on how to make a peanut butter and jelly sandwich.
The following materials are available to you to make your sandwich:
• Peanut Butter• Jelly• Bread• Knife
Follow up QuestionFollow up Question
• Why is it important to write an accurate and detailed procedure?
• Why is it important to write an accurate and detailed procedure?
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SCENARIOSCENARIO
Today, we are going to conduct a scientific investigation.
We will use the SCIENTIFIC METHOD!
SCIENTIFIC METHODSCIENTIFIC METHODThese are the first few steps of what
we called the SCIENTIFIC METHOD.
Every time a scientist explores the world, they follow these six steps:
1. Ask a question!2. Make a hypothesis.
3. Research your hypothesis.4. Design an experiment.
5. Analyze your experiment.6. Reach a conclusion.
STEP 1 | ASK A QUSTION
Question: How will different types of music affect your heart rate?
STEP 2 | DEVELOP A TESTABLE HYPOTHESIS THAT ANSWERS THE QUSTION
Research:
•What is your opinion of rap music?
•How does rap music make you feel?
•What is your opinion of rock n roll
music?
•How does rock n roll music make you
feel?
•What is your opinion of classical music?
•How does classical music make you feel?
STEP 3 | DEVELOP A TESTABLE HYPOTHESIS THAT ANSWERS THE QUSTION
Research:
•I think that rap music will _________________my heart
rate
•I think that rock n roll music will ____________my
heart rate.
•I think that classical music will _____________my heart
rate.
•Now, choose a type of music and form an hypothesis
using “if” and “then”
STEP 4 | DESIGN AND CONDUCT AN EXPERIMENT
Materials:
+ ++ ++ +
STEP 4 | DESIGN AND CONDUCT AN EXPERIMENT
Procedures:•Find your pulse on your neck
Every time you feel a thump = 1
Procedures:•Count your resting heart rate for 30 seconds and then
record it in the table. Repeat.
•Listen to Rap music for 1 minute
•Count your heart rate for 30 seconds and then
record it in the table.
•Repeat
•Listen to rock n roll music for 1 minute
•Count your heart rate for 30 seconds and then
record it in the table.
•Repeat
•Listen to classical music for 1 minute
•Count your heart rate for 30 seconds and then
record it in the table.
•Repeat
Resting
Heart Rate (Trial 2)
Average
Heart Rate (Trial 1)
After Rap Music
After Classical Music
After Rock n Roll Music
STEP 5 | ANALYZE DATA Average = (Trial 1 + Trial
2) / 2
•Why do you think it is important to do two
trials?
RAPRAP
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ROCK N ROLLROCK N ROLL
CLASSICALCLASSICAL
STEP 6 | REACH A CONCLUSION
•A conclusion is similar to an inference. We
must use our data to decide what happened.
•Ex: You have an I-pod. One day you turn
your I-pod on, but it doesn’t work. You think
the I-pod is dead, so you charge it. But your I-
pod still will not work! You replace the
headphones, and now your I-pod works.
•You can conclude that the headphones
are broken.
STEP 6 | REACH A CONCLUSION
•In science, drawing a conclusion
means summing up what you have
learned in your experiment.
•Ex: Czar hypothesized if the day is
sunny, then the hottest time of day will
be about 3 o’clock in the afternoon.
STEP 6 | REACH A CONCLUSION
•Czar conducted an experiment, and got the
following data.
10 am
11 am
12 pm
1 pm
2 pm
3 pm 4 pm 5 pm
Temperature
20 26 31 33 34 35 31 29
When was the hottest part of the day?What can Czar conclude?
On sunny days in July, the warmest temperatures occur about 3 pm.
Was Czar’s hypothesis supported or rejected?
STEP 6 | REACH A CONCLUSION
•How did rock and roll music affect your heart
rate?
•How did rap music affect your heart rate?
•How did R & B affect your heart rate?
• Does this conclusion support or reject your
hypothesis?
STEP 6 | REACH A CONCLUSION
•Was your hypothesis confirmed?
•What data supported your conclusion?
•What errors did you make during the lab?
• What are your plans for future experiments
that answer the same question? What would
you do differently?
• Why is it important to communicate your
findings clearly in a good conclusion?