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Classroom Investigation: Making Bubbles
Classroom Investigation: Making Bubbles
Step 1: Observing phenomena, asking questions & making a claim
Step 1: Observing phenomena, asking questions & making a claim
Observed phenomena (from your own experience, what you see in the photo above and/or the attached videos)
Observed phenomena (from your own experience, what you see in the photo above and/or the attached videos)
What is a testable research guiding question?
What is a testable research guiding question?
Can a standard homemade bubble solution (dawn dish detergent & water) be altered to create larger and/or longer lasting bubbles by the addition of an additive?
Can a standard homemade bubble solution (dawn dish detergent & water) be altered to create larger and/or longer lasting bubbles by the addition of an additive?
- Glycerin
- Karo syrup (and/or sugar)
- Salt
Claim (statement that you believe to be true that answers the guiding question)
Claim (statement that you believe to be true that answers the guiding question)
I believe that ...
I believe that ...
Step 2: Planning and carrying out investigations
Step 2: Planning and carrying out investigations
Testable hypothesis
Testable hypothesis
If … then …
If … then …
What was the independent variable? Explain.
What was the independent variable? Explain.
What variable was manipulated?
What variable was manipulated?
What was the dependent variable? Explain.
What was the dependent variable? Explain.
What variable was possibly affected by the manipulated (independent) variable?
What variable was possibly affected by the manipulated (independent) variable?
What was the control group? Explain.
What was the control group? Explain.
What was used as a comparison to determine if the additives affected the investigation?
What was used as a comparison to determine if the additives affected the investigation?
Were they any possible confounding variables?
Were they any possible confounding variables?
Was there any possible variables that were not accounted for that possibly affected the results of the investigation?
Was there any possible variables that were not accounted for that possibly affected the results of the investigation?
Surface tension
Surface tension
What causes a bubble to form?
What causes a bubble to form?
Thin film interference
Thin film interference
Where do the colors come from?
Where do the colors come from?
Evaporation rate
Evaporation rate
How do the additives affect the bubble?
How do the additives affect the bubble?
Example conclusion
Example conclusion
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