1. Observations (Evidence) &Inference
Write at least the statements in blue

2. Ancient Greek philosophers started the scientific tradition of logical thinking, but they sometimes missed out on an important aspect – gathering evidence.

3. Many philosophers developed their claims through contemplation and thought rather than experimental procedure, which sometimes led to errors.

4. Aristotle contemplated these facts:
*Males are larger than females, and have more room in their mouths
*Males fight more than females, and
sometimes use teeth to fight
*Males eat more than females, and teeth
are required to eat

5. “In mammals, males have more teeth
Aristotle made this claim:
“In mammals, males have more teeth
than females.”

6. **Our claims must always be based on
If he had conducted a scientific survey, he would have found that males and females have the same number of teeth.
**Our claims must always be based on
observations, evidence, and facts, not just logical ideas.
(Write this down in your notes)

7. Where is this kid and what is he doing? What is the temperature?
Observations, Evidence:
Inference:

8. What happened here?
Inference

9. What happened here?
Observations, Evidence
Inference

10. Big Ideas:
2- When we get new evidence that is different from before, we change our ideas to include the new evidence, but we still keep the old evidence too.
1- All science knowledge is based on observations, evidence, facts. 3- Science knowledge is always changing.

11. Two Types of Observation (Evidence)
Quantitative
Qualitative
Quantity
Numbers
Measurements
Length, width, weight, temperature, density, volume
Quality
5 Senses
Describes it without numbers
Sweet, salty, stinky, red, orange, yellow, blue, purple, old, new,

12. Do some reading on the following slides to find out more about making inferences.

13. Some scientists investigate things that they cannot observe directly.
For example, scientists cannot see dinosaurs, the bottom of the ocean, or atoms and molecules. Still, scientists want to know more about these things, so they gather evidence about them in other ways.
Q1. What is the topic of this passage?
Label Q1 in your notebook and write your answer.

14. For example, they make observations of fossil dinosaur droppings or measure the amount of time it takes sound to travel to the bottom of the ocean.
Although atoms and molecules are too small to see, scientists use very powerful tools to gather evidence about them.
Q2. Name 3 examples of ways scientists infer. Label Q2 in your notebook and write your answer.

15. Once scientists have gathered evidence, they use it to make inferences about the things they are investigating. For example, when scientists figure out what is in a fossil dinosaur dropping, they can then make inferences about what the dinosaur ate when it was alive.
Q3. What do we need to do before making an inference?
Write Q3 in your notebook and write your answer.

16. They are not observing the dinosaur
eating—they are using evidence to make an inference. Similarly, by measuring the amount of time it takes for sound to travel to the ocean floor, scientists are able to make inferences about how deep the ocean is and what the ocean floor is like.
Q4. What is the difference between evidence and inference?
Write Q4 in your notebook and write your answer.

17. Over time, scientists gather more evidence and become more and more sure of the inferences they have made.
Q5. Make your own inference: Do scientists ever “change their minds” about claims they have made?
Write Q5 in your notebook and write your answer.

18. What is the occasion?
Evidence:
Inference:

19. What happened?
Evidence:
Inference:

20. What the ???
Evidence:
Inference:

21. What happened here?
Inference

22. What happened here?
Inference

23. Let’s examine some multiple sources of evidence and put them together to make an inference:
We had some neighbors move in last week, and I want to know more about them before I deliver a house warming gift. I stole some of their trash…
(Put multiple inferences together to make a claim)

24. I found …
Evidence:
Inference:

25. I found…
Evidence:
Inference:

26. I found…
Evidence:
Inference:

27. I found a poster…
Evidence:
Inference:

28. I found…
Evidence:
Inference:

29. I found…
Evidence:
Inference:

30. How many children are in the family? What are their approximate ages?
Evidence
Claim