Darwin s Theory & Natural Selection Guided Notes, Causes of Natural Selection Foldable, Lotus Vocab/Main Idea Chart, & Circle Map.

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1 Darwin s Theory & Natural Selection Guided Notes, Causes of Natural Selection Foldable, Lotus Vocab/Main Idea Chart, & Circle Map By: Jessica Smith

2 Darwin s Theory Guided Notes Glue into notebook here! Charles Darwin set sail on the in December 1831 to learn about. Darwin s Observations 1. Diversity: 2. Fossils:

3 Galapagos Organisms Evolution: Galapagos Organisms S. American Organisms Selective Breeding: Darwin noticed difference among organisms on the islands. For example: Adaptation: Seed eaters: Insect eaters: Natural Selection:

4 Darwin s Journey Natural Selection Selective Breeding Darwin s Observations Galapagos Organisms Darwin s Theory Organism Comparisons Evolution Adaptations

5 Charles Darwin

6 Natural Selection Circle Map Natural Selection

7 Cut and Throw Away Cut and Throw Away Overproduction Selection Variations Environment Competition Genes

8 Answer Key & Suggestions for Use

9 Darwin s Theory Teacher Notes I have students trace Darwin s route with a highlighter Charles Darwin set sail on the HMS Beagle in December 1831 to learn about plants and animals in other parts of the world. Darwin s Observations 1. Diversity: (Different) Darwin observed much diversity of organisms in different parts of the world. 2. Fossils: Preserved remains of an organism that lived in the past. Fossils gave Darwin evidence of living things changing over time.

10 Galapagos Organisms Galapagos Organisms Example: Iguanas had larger claws to cling to slippery rocks to eat seaweed. S. American Organisms Iguanas had smaller claws to climb trees & eat leaves. Darwin noticed difference among organisms on the islands. For example: Some tortoises had dome shaped shells while others had saddle shaped shells. Adaptation: A trait that helps an organism survive & reproduce. Evolution: A gradual change over time *Darwin saw evidence that species changed over Time. Selective Breeding: Breeding to get a desirable trait. Genes Environmental Change OverproducCon SelecCon VariaCons CompeCCon Seed eaters: Wide, strong beaks to Break seeds Insect eaters: Narrow, needle-like beaks to get insects. Natural Selection: The process by which individuals that are better adapted to an environment will survive survival of the fittest

11 Darwin s Journey Darwin s Observations Galapagos Organisms Darwin took a journey On the HMS Beagle to Examine different Organisms & noticed how different they Are from species he was familiar with. Darwin observed how diverse living things Are. He also studied fossils and other characteristics Of organisms on the islands. Galapagos organisms were unlike Any he d ever seen! - Giant Tortoises - Iguanas - Birds Natural Selection The process by which Individuals that are better Adapted to their environment are More likely to survive & reproduce. This could be used in class, for homework, or as a warm up. Students can define, explain or draw a picture! Organism Comparisons Organisms on the Galapagos Islands Were very similar to the mainland, but had Differences. For example, the iguanas Had large claws the cling to slippery Rocks. And tortoise shells varied. Some were Dome shape while others were saddle shaped. Selective Breeding Breeding to get a desirable trait. For example, breeding a fast horse and A strong horse gives you a fast, strong Horse. Evolution A gradual change in species over time. Darwin hypothesized that organisms (finches, iguanas, etc.) changed To survive their environment. Adaptations A trait that helps organisms survive & reproduce. Example: Darwin s finches had different beaks to help them eat seeds and insects.

12 Higher level thinking connections belong on the outside square. Give students a questions using the main ideas in the circle to help them APPLY their knowledge. For Example: - How does overpopulation cause natural selection? - How did Darwin s discoveries spark what we know now? - What is your opinion of natural selection? - Do we have any evidence of natural selection we can see in our current year? Natural Selection Circle Map Teacher Guide Natural Selection The outside circle is for words Associated with natural selection Examples: evolution, overpopulation, selection, genetics, adaptations, competition, etc.

13 Cut and Throw Away Overproduction Variations Competition On the opposite side of this foldable, students write Causes of Natural Selection in this top portion. Suggestions for Use This foldable can be used to explain the different causes of natural selection. Overproduction: Too many of one species will cause some to die off (not enough food, predators). Variations: Differences amongst species make some individuals more fit to survive than others. Competition: For food, shelter, mates, etc. Selection: The environment selects who lives and who dies depending on their traits. Environment Change: Factors such as climate change and soil can effect which organisms and plants survive in a given area. Genes: Depending on the traits passed down from parent to offspring, some genes are more suitable for survival than others. Cut and Throw Away Selection Environment Change Genes

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