Std- 9 Science and Technology-
Gujarati Medium Textbook pdf Download
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Textbook Name: Std- 9 Science and Technology-Gujarati Medium Textbook
Language:
Class: Standard - 09
Published by: Gujarat State Board of School Textbooks (GSSTB)
Download Mode and Format: Online Mode and PDF Format File
Official Website: gujarat-education.gov.in/textbook/
Std- 9 Science and Technology Textbook PDF
Make explicit to students that what they have done is very similar to what paleobiologists and other scientists that investigate fossils often do. Point out that much creativity is involved in extrapolating or inferring from fossils the kind, habitat, and life style of the organisms whose fossils or fossil fragments are investigated.
Class-9 Science and Technology PDF book
You can conclude this activity by talking about the famous case of the dinosaur Iguanodon. When it was first reconstructed, the thumb was originally placed as a spike above the nose! It is useful to remind students that any reconstruction should be considered tentative --just like all of the products of science. You can initiate a discussion about the extent to which creativity plays a role in science with the case of hominid evolution:
Gujarat Board Std- 9 Science and Technology PDF book
Telling the story of the evolution of man ( Homo sapiens ) over the course of the past five million years. Scientists have formulated several elaborate and differing story lines about this evolution. It is noteworthy that all that is available to those scientists is a few teeth, tools, and parts of skulls and skeletons that can be spread over one moderately-sized table! Inference, imagination, and creativity serve to fill in the gaps, which in this case seem to be enormous!
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The same discussion can be carried further to introduce students to the notion that scientific knowledge is affected, to varying degrees, by the social and cultural context in which it is produced. The differing story lines in the above example about the evolution of humans were heavily influenced by social and cultural factors. Until recently, the dominant story was centered about ‘the manhunter’ and his crucial role in the evolution of humans to the form we now know (see Lovejoy, 1981). The hunter scenario was consistent with the white-male culture that dominated scientific circles up to the 1960s and early 1970s.
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