1. 2/21 & 2/ th Grade Agenda
Learning Objective: Learn about evidence of evolution
Collect HW: Homologous Structures
Science Fair Check up
Pass back HW & Test
Video: PBS Evolution
Text Book Reading: 244 – 246
HW: Reading & Notetaking p. 123 – 124
HW: Signed Grade Printout
Reminder Science Fair Board due 2/23 & 2/24 (50 Points)

2. Reflection
Prompt: Why is it better to describe evolution as a tree instead of a ladder?

3. Science Fair Check up

4. Science Fair Project due 2/22 & 2/23 (50 Points)

5. Science Fair Project Due 2/23 & 2/24 (50 Points)
Title: 3 points
Question: 3 Points
Hypothesis : 3 Points
Background: 3 Points
Materials: 3 Points
Procedures: 3 Points
Data Table: 3 Points
Graph: 3 Points
Bibliography: 2 Points
Results: 3 points
Discussion: 3 Points
Conclusion : 3 Points
Display Decoration: 5 Challenging: 5 Points
Scientific Validity: 5

6. Results: 3 Points erns nions
Results: The results should look for patt________ in your data and graphs. Describe the patterns in 2-5 sentences. Results are factual so DO NOT include opi_______ or reasoning.
erns
nions

7. Discussion: 3 Points sult ors oved rn
Discussion: The discussion should be one or more paragraphs.
Why do you think you got the re______ that you did?
Explain possible err______ and problems that occurred during your experiment?
How can your experiment be impr________?
What did you lea____ by doing this experiment? (Be scientific…do not say, “I learned that growing plants was fun.”)
sult
ors
oved rn

8. Conclusion: 3 Points thesis orted
Conclusion: Restate your hypo________. Was your hypothesis supported or not supp_______? Explain why it was supported or why it was not (this should answer your initial question).
thesis
orted

9. Display Decoration: 5 Points
Board must be 36 X 48 inches
Is it Neat?
Don’t forget about the decorations
Make the Science Fair Board attractive with lots of drawing, decorations & photos

10. Challenging: 5 Points amount of time
difficulty of the question and test
quantity of trials/tests
complexity of the experiment/experimental design

11. Scientific Validity: 5 Points
accuracy of tests
accuracy of scientific design
controlled experiment
One variable tested
Other factors constant
scientific measurement system

12. Reflection
Prompt: Copy 1 paragraph of discussion from a science board.

13. Did humans evolve from chimpanzees?NO
Humans did not evolve from chimpanzees. Humans and chimpanzees are evolutionary cousins and share a recent common ancestor that was neither chimpanzee nor human.
Humans are not "higher" or "more evolved" than other living lineages.

14. Comparison of Bonobos and Chimpanzees

15. Flores man was 3 feet tall
Lived in an Island in Indonesia 10,000 years ago
Lived with Dwarf Elephants

16. Gigantopithecus was 10 feet tall
Lived in SouthEast Asia 100,000 years ago.
Walked on all fours but can stand upright

17. Can evolution be described as a tree or a ladder?

18. Fossils in which minerals replace all or part of an organism is called…
Petrified Fossils

19. Most Common Fossils are Molds and Casts. What are they?
Mold: Hollow in shape and are formed when an organism buried in sediment dissolves
Cast: Copy of an organism’s shape formed when minerals seep into a mold
Dinosaur Foot Print

20. What is a carbon film fossil?
Carbon film is an extremely thin coating of carbon on rock.

21. What are Trace Fossils?
Trace Fossils provide evidence of the activities of ancient organisms. Such as Dinosaur foot prints
Megalosaurus footprint A meat eating predator from the Jurassic

22. What are some of the ways that extinct animals can be preserved with little or no change?
Amber
Freezing

23. The preserve remains or traces of an organism that lived in the past is called…
Fossil
Most fossils form when organism that die become buried in sediments
Remains of most animals never becomes fossil

24. How do fossils form?

25. Gradualism vs Punctuated Equilibria
Gradualism: The theory that evolution occurs slowly by steadily
Punctuated Equilibria:Evolution occurs during short periods of rapid change separated by long periods of little or no change

26. What are homologous structures?
Similar structures that related species have inherited from a common ancestor

27. Similarities in Early Development

28. Human Embryos have tails and gill slits

29. Similarities in DNA – Is an Elephant and this Shrew closely related?
Scientists can determine how closely related the species are by comparing the DNA of different species
DNA comparison has revealed that the tiny elephant shrew is closely related to the elephant

30. Branching Tree shows how closely related species are