Answer the following questions based on the picture to the right. 1. What features can you identify...
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Transcript of Answer the following questions based on the picture to the right. 1. What features can you identify...
Answer the following questions based on the picture to the right.1. What features can you
identify in the photograph?
2. Where do you think this photograph came from?
3. If you were an Earth scientist, how could you use this photograph in your work?
Bell Work
Observation
Definition: describing something you are studying, using only facts that you can see, touch, hear or smell. An observation is not an opinion.
Inference
Inference: using your observations to make a guess about an object or an outcome.
Think you’ve got it?!
◦ We can OBSERVE that the turtle is on the stump.◦ We can OBSERVE that the stump is too high for the
turtle to climb on.◦ We can INFER that someone put the turtle on the
stump.
Guided Practice:◦ We can __________________that someone is smiling.◦ We can _______________that they are happy.
◦ We can __________that a student is writing downtheir homework.
◦ We can __________that they are a successful student.
Think you’ve got it?!
Guided Practice:◦ We can _OBSERVE__that someone
is smiling.◦ We can ___INFER___that they are
happy.◦ We can ___OBSERVE___that a
student is writing down their homework.
◦ We can ___INFER___that they are a successful student.
Independent Practice
Making observations of optical illusions.
Group Activity
Independent Variable:The variable that you CHANGE (aka the manipulative variable.)
Dependent Variable:The variable that you observe and MEASURE the RESULT of Change
Independent and Dependent Variables:
Observation: A gardener wants to test if the fertilizer, “Easy Grow” will cause more growth (measured by length of stem) on his red roses rather than normal soil.
What is the independent variable?What is the dependent variable?
Example-Fertilizer & Plant Growth
Independent Variable:Type of Soil:
Fertilizer (Grow Easy) or normal soil
Dependent Variable:Length of red roses stems
Example-Fertilizer & Plant Growth
Experimental group: the subject(s) being tested
Control group: the subject(s) who do not receive experimental treatment and are used as a comparison
Experimental Group & Control Group
Observation: A gardener wants to test if the fertilizer, “Easy Grow” will cause more growth (measured by length of stem) on his red roses rather than normal soil.
What is the experimental group?What is the dependent variable?
Example-Fertilizer & Plant Growth
Observation: A gardener wants to test if the fertilizer, “Easy Grow” will cause more growth (measured by length of stem) on his red roses rather than normal soil.
What is the experimental group?Red roses grown in fertilizer
What is the dependent variable? Red roses grown in normal soil
Example-Fertilizer & Plant Growth
Question: Is there a relationship between the number of hours spent studying and the score a student gets on the weekly quiz?
Define:Independent VariableDependent VariableExperimental GroupControl Group
Example 2
Independent VariableNumber of hours spent studying
Dependent VariableScore on the weekly quiz
Experimental GroupStudents studying more (or less)hours than normal
Control GroupStudents studying their normalamount of hours
Example 2
A psychologist is studying the effects of steroids on the aggressive behavior of female rats. 24 female rats receive daily injections of a placebo (sugar pill that has no effect), while 24 others receive daily injections of the steroid. Round-the-clock videotapes of the rats allow all aggressive encounters to be counted and timed.
Guided Practice
A psychologist is studying the effects of steroids on the aggressive behavior of female rats. 24 female rats receive daily injections of a placebo (sugar pill that has no effect), while 24 others receive daily injections of the steroid. Round-the-clock videotapes of the rats allow all aggressive encounters to be counted and timed.
Independent Variable steroid usage in rats Dependent Variable aggressive behavior Experimental Group the rats who received the real
steroid treatment Control Group the rats who received the placebo
treatment
Guided Practice
May talk quietly to neighbor Do not get out of your seat- unless
approved Only time allowed for bathroom
◦ One student allowed @ a time Pencil/Pen in hand practicing content &
skills
Expectations for Independent Practice