Bell Ringer Date: 9/29 – 9/30 Topic: Evidences of Evolution Learning Target: Explain how the fossil record, comparative anatomy and Have your homework out and ready to be checked Answer the following question: What are two differences between prokaryotic and eukaryotic cells?

Agenda Bell Ringer (10 minutes) Introduction: Turn and Talk (5 minutes) Notebook Input (15 minutes) Notebook Output (10 minutes) Group Work: Mini Lab (20 minutes) Independent Practice (20 minutes) Exit Quiz (10 minutes)

Evolution Video (2min) https://www.youtube.com/watch?v=W2ojuZ_s4z8

Think and Talk How could you prove this is the way it happened? What experiments or evidence exist? Ex.: That a lizard started as a fish?

EVOLUTION is the process of change over time

Common Ancestry The theory of Evolution states that organisms share common ancestry, meaning that different species we have today originally came from one species

Input Notes: Write what is in RED

Darwin studied animals on the Galapagos Islands Evidence for Evolution Day 1 Darwin’s theory of evolution: organisms evolved over long periods of time descending from common ancestors Darwin studied animals on the Galapagos Islands He noticed that some fossils of extinct animals were similar to living species

Talk: How is this evidence of evolution Talk: How is this evidence of evolution? What other species may have this common ancestor?

Which fossils are older?

Evidence for Evolution Day 1 Darwin’s theory of evolution says that organisms evolved over long periods of time through descent from common ancestors Fossil Record Evidence that life on earth is old and has changed over time Shows similarities between ancient and present day organisms Simple to complex Newest fossils Oldest fossils

Fossil record Layers of rock contain fossils Which of these fossils would be more towards the top of the rock canyon? Layers of rock contain fossils Upper layers=most recent fossils 12

Think and Talk: Who is most similar? Why? (More closely related) VS. VS.

Think and Talk: What do you notice? VS.

Homologous Structures same structure on the inside different functions on the outside Different evolution, similar origins Is this evidence for common ancestry? Analogous Structures Same function on the outside Different structure (on the inside) Is this evidence for common ancestry? Different origins, similar evolution

2. Comparative Anatomy: comparing different species bone structures to determine common ancestry Vestigial structures- body parts that have no function Homologous structures- different function, same structure Analogous structures- same function, different structure

Vestigial structures: Body parts that seems to serve no purpose/function Indicate common ancestry Example: Appendix, wisdom teeth Picture of evolution from the feet. Students should COPY this slide. BRIEFLY go over what is written A good strategy to use is repetition. As students are writing, you are repeating the same statement and providing QUICK examples

Think and Talk: What do you see/notice? What will this grow into? Chimp Human Similarities in embryos prove common ancestor

3. Comparative Embryology: comparing embryos of different species to determine common ancestry Shows that there are shared patterns of development

Notebook Output (10min) Answer the following question in complete sentences: How does the evidence we have prove the theory of evolution—that we come from a common ancestor? Use the following vocabulary words: evidence, fossil record, theory

Group Mini Lab/Independent Practice Group 1 will do the group activity first Group 2 will do independent practice first Then the groups will switch

End Mini Lab Expectations Follow instructions on the worksheet! Talk using scholar voices! Work with urgency! Stay in your group and do not move around the classroom! 20 minutes End

Independent Practice Expectations Work SILENTLY Raise your hand to ask a question Work with urgency! 20 minutes End

Exit Quiz Work SILENTLY and INDEPENDENTLY! 5 minutes End