1. Where do scientists get their ideas for experiments?

2. How do you design an experiment?

3. Scientific Investigation 1. Thinking like a scientist2. Scientific Method (getting ideas) (testing ideas)

4. While studying photographs of animals at her University’s library, a zoologist notices a striking difference between animals from Africa and animals from Asia.

5. African Wild DogAsian Wild Dogvs. Here’s what she sees:

6. African Elephant Asian Elephant vs. And this:

7. African Fox (Fennec Fox) Asian Fox (Corsac Fox) vs. And this:

8. African Antelope (Kudu) Asian Antelope vs. And this:

9. The zoologist makes an observation: the ears of African mammals are larger than the ears of Asian mammals. African Elephant Asian Elephant

10. Scientific Investigation 1. Thinking like a scientist2. Scientific Method (getting ideas) (testing ideas) Observation

11. Info gathered before conducting an experiment. Not the same as data. AfricanAsian

12. Based on her observation, the zoologist makes an inference: large ears must be an adaptation to life in Africa.

13. Scientific Investigation 1. Thinking like a scientist2. Scientific Method (getting ideas) (testing ideas) ObservationInference

14. A logical guess based on observation.

15. Scientific Investigation 1. Thinking like a scientist2. Scientific Method (getting ideas) (testing ideas) ObservationInference

16. Observation vs. Inference Make some observations based on this photo.

17. Observation vs. Inference Based on your observations, make an inference.

18. An inference is NOT a fact! After uncovering more info, an inference may turn out to be incorrect.

19. There are two types of observations that inferences can be based on: quantitative and qualitative.

20. Quantitative Observation Ears are 28 inches wide Swing 11 times per minute Can hear up to 275 feet away Info that can be counted. Ex: length, speed, distance, etc. ° “Quantity”

21. Qualitative Observation Ears are dark gray Fan-shaped Uneven edges Info that cannot be counted. Ex: color, shape, texture, etc. ° “Quality”

22. Scientific Investigation 1. Thinking like a scientist2. Scientific Method (getting ideas) (testing ideas) ObservationInference Quant. Qual.