Experimental Design, Observations, Inferences

Using prior knowledge + observations to draw conclusions

• Hypothesis
• Inference
•  Observation
• Prediction

To make these you use the 5 senses:  touch, taste, smell, hear, see

• Observations
• Inferences
• Predictions
• Controls

Tags

NGSS.MS-LS1-8

This VARIABLE is what you measure. It is the one that RESPONDS to what you are testing.

• Independent

• Dependent

• Control

• Observation

This VARIABLE is the 1 FACTOR YOU CHANGE (manipulated) in an experiment. It is what you are testing. It CAUSES something to happen.

• Independent

• Dependent

• Control

• Qualitative

The classroom has 1 teacher and 21 students. WHAT KIND OF OBSERVATION IS THIS?

• QUANTITATIVE

• QUALITATIVE

• INFERENCE

What is the INDEPENDENT VARIABLE in this hypothesis?

If a dog is given a bath using DAWN dish soap, THEN the # of fleas will decrease.

• the dog

• DAWN dish soap

• # of fleas

What is the DEPENDENT VARIABLE in this hypothesis?

If a dog is given a bath using DAWN dish soap, THEN the # of fleas will decrease.

• the dog

• bath in DAWN dish soap

• # of fleas

Which is the Quantitative Observation? 

• There is 1 roller coaster
• The track is blue green in color.
• There are many people.

What would be a good inference for this picture?

• The people are sitting close to each other
•  They are at an amusement park like Six Flags.
• They are at Walmart.

The purpose of the control group is:

• Used for comparisons
• Application of the I.V.
• Application both the I.V. and D.V.
• Application of all constants.