Define the Variables
What is the variable which is changed on purpose in an experiment? In other words, what are you testing?
Independent Variable
An experiment is conducted to see how different air temperatures affect the time it takes for Ms. Nutter to put on her sweater. What is the dependent variable?
What is the time it takes for Ms. Nutter to put on her sweater.
What do you use to make observations?
What are The five senses
What is an observation which is measurable?
Quantitative
An inference uses your 5 senses.
What is false?
What is the measured outcome in an experiment?
The dependent variable
A scientist tests how the amount of daily water affects the bathroom breaks a student gets throughout the week. What is the independent variable?
What is the amount of water you give the student.
What is a statement based on prior knowledge and observations?
Inference
What is the observation which cannot be counted or measured?
Qualitative
If we are testing the effect of the number of days in water on the mass of gummy bears, the mass is the independent variable.
What is false?
What is a variable in an experiment that is kept the same?
Constant
VP Brown is making pancakes for students with good behavior. He notices that the more pancake batter he uses (b), the less individual pancakes he can flip on the griddle (p). What is the dependent variable?
What is the number of pancakes he can fit on the griddle (p)?
Observation or Inference: The leaves on the plant are brown.
What is an observation?
Qualitative or Quantitative?
Mr. Windle helps Mrs. Pierce 5 days per week.
Quantitative Observation
What is true?
When you are doing an experiment, the group that does not receive the treatment or intervention is called... (baseline comparison)
What is the Control Group
In the hypothesis, "If the temperature is decreased, the growth of bacteria will also decrease," the growth of bacteria is this.
What is the dependent variable?
Observation or Inference: The plant is not growing because there is not enough sun.
What is an inference?
Qualitative or Quantitative?
Dominion Middle School's mascot is the Polar Bear.
Qualitative Observation
When you are doing an experiment, the group that does receive the treatment or intervention is called...
What is the experimental group?
Xavier wanted to test how the amount of liquid fertilizer given to sunflower plants affects their growth over 4 weeks. The amount of liquid fertilizer given to the sunflower plants is what variable?
What is the independent variable?
Observation or Inference: The students scored better on the test because they chewed gum.
What is an inference?
Careful, it's tricky... Qualitative and/or Quantitative?
Mrs. Pierce always has three drinks in the morning, her protein shake, water, and a coffee.
Quantitative - 3 drinks
Quantitative - Kinds of drinks
Let's Add Math!!!
Marqwan earns $15 for every lawn he mows. His total earnings (e) depend on the number of lawns he mows (n). The equation to find his earning would be e=15n. 'e' would represent your independent variable because it is the one that's being manipulated.
What is false?
The number of lawns he mows will determine his total! Therefore, n would be the independent variable. The more lawns he mows, the more money he makes (e) - the dependent variable.