1. Observation vs. Inference
Starring Homer J. Simpson

2. Observation
Ohh… This liquid is green and it is sticky. I also smell it.
Observation: when studying something, describe only facts that you can see, touch, smell and hear (five senses). You are not making any guesses.
THIS IS NOT AN
OPINION!!
Qualitative observations describe a quality on object possesses (such as texture, color, smell, taste…)
Quantitative observations involve numbers!! This includes how many or a specific measurement.

3. THIS CAN BE A SCIENTIFIC OPINION
Inference
Based on my observations, I think that this can is old and is leaking a toxic substance.
Inference: using your observations to make a LOGICAL ASSUMPTION about an object or an outcome
THIS CAN BE A SCIENTIFIC OPINION

4. Practice Picture 1
Please Make some observations and inferences about the following picture.

5. Practice Picture 2

6. Picture 3

7. Picture 4

8. Picture 5