- The following passage is the last paragraph from Charles Darwin’s Origin of Species. The words represent a magnificent accomplishment in science and contain the basic ideas we will explore during 2nd semester of Science 7. There are many references available on Darwin, his ideas, his writings:
In groups analyze the passage. Note your questions. Select examples. Summarize your ideas and your group’s ideas.Share your group’s thinking with the full class. (The passage is from the 1st edition of Origin of Species: https://www.gutenberg.org/files/1228/1228-h/1228-h.htm )
1. It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us.
2. These laws, taken in the largest sense, being Growth with Reproduction; Inheritance which is almost implied by reproduction; Variability from the indirect and direct action of the external conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms.
3. Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows.
4. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
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Make a note of these links. We will look at them as a class and you will need to review them (periodically) on your own or in a small group.
The Continuity of Life
What Darwin Never Knew
A Confusion of Names from Botany: A Blooming History
Sexual Encounters of the Floral Kind
If there is time, visit your partner tree. Organize your observations from the first to today’s. Label your sketches and photos. What information should be included in a label? In a record of an observational visit? See the diagrams below showing what to look for when observing trees. Use these guidelines to enhance your observations. Develop a scheme or template that you will use for your observations of the partner tree. What are the things to notice? What will you need to do to clarify observations and thoughts about your individual specimen and the species (genus, family) to which your particular partner tree belongs?
A great riddle about learning in science: How can you learn to observe things that you have never noticed before?
Include observations that are detailed enough so that you could construct a scale model (made from paper?) of a branch with leaves of your species. You will need to decide the kind of leaves your species has. Think about the distinctions among leaves, like simple, compound, double compound.
Add important information about your tree species to your records through research from books and reliable websites.
Some native trees: suitabletreesdelhi
Compare the results of tree surveys by Sci 7 2015-2016s and 2016-2017
- 2016-17 Pd8: https://docs.google.com/a/aes.ac.in/spreadsheets/d/10Cn1AfKkJyn9sw6CqiqEKldKlSElFLnGuILofRyMm-s/edit?usp=sharing
- 2016-17 Pd6: https://docs.google.com/a/aes.ac.in/spreadsheets/d/110bXByMlkl6xHnX2nOhG8T1SJKmix273nlffkzCVfNk/edit?usp=sharing
- 2016-17 Pd5: https://docs.google.com/a/aes.ac.in/spreadsheets/d/10RdXmdn9v1838NjucBgUKcAR1SCu8o4YSyjeEUhIPRg/edit?usp=sharing
- 2015-16 Period8 treelistperiod8 or https://docs.google.com/a/aes.ac.in/spreadsheets/d/1R3UemPGz8uowhkVtk43QhMRHLaIwWhMt4GyS2jsyaBc/edit?usp=sharing
- 2015-16 Period6 tree survey period6 or https://drive.google.com/a/aes.ac.in/file/d/0B4DPwlouN3dIeDdseWVUZEVWYTg/view?usp=sharing
- Tree list from FMO 2014-2015 school year (includes campus housing) Trees at AES 20142015 FMO