Teachers Community of Learning Bangalore South Block 3 Science Workshop 2 2014 15
Overview of the science programme
- To build a community of science teachers for building a shared understanding of aims, challenges and methods of science teaching-learning
- To fully activate science labs in the schools; develop the use of experiments as a method of learning science
- Integrating technology for setting up experiments/ exploring and investigating
- To develop deeper understanding of science and science education amongst the community of teachers
Details of science programme
Block level workshops
Aug 31 - Sep 2 |
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Nov 11-12 |
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Agenda
Day 1, Aug 31 (Physics) |
Lunch
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Day 2, Sep 1 (Chemistry, Biology) |
Lunch
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Day 3, Sep 2 (Physics, Chemistry, Biology) |
Lunch
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Work done by Teachers
What do you think will happen? | What happened (observation) How it happened? | Why it happened? Inference | |
Chemical reactions of metals
Reaction of sodium with water Magnesium – burning in air (cb sand cnn) |
Some may think sodium wont react with water. Some may think it may dessolve. Some may think no changes will happen. | Sodium vigorousily moved in water with a hissing noise.
Sodium disappeared gradually with the liberation of gas. |
Because sodium reacts with water. |
Chemical decomposition
KMnO4 heated ( Shobha GHS Yadiyur Ratna GHS Dommalur) |
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KMnO4 when heated decomposed in to K2MnO4 MnO2 and O2
2KMnO4 ---> K2MnO4+ MnO2 + O2 |
Diffusion and Osmosis
(Vijayalakshmi and Nishatunnisa) |
Colour change
Burning of agarbathi preparation of sweets |
Gradually the colour of water changes completely with the substance taken (KMnO4 or ink)
spreading of odour The particles of KMnO4 or ink moves into the water The particles of agarbathi mixes with air The smell of sweets spreads |
Water is colourless, so it takes the colour of ink or KMnO4
It has a strong smell, so it mixes with air and spreads Inference: Diffusion is a process in which movement of molecules from a region of higher concentration to a region of lower concentration KMnO4 or ink has higher concentration where as water has lower concentration The place where the lightened agarbathi kept has high concentration , it mixes with air |
Monocot leaf and dicot leaf (cross section)( thilaka mani and Shoba jayaram) | Cells of different shapes | They observed vascular bundles and their arrangement | As the vascular bundles are arranged circularly in dicot and scattered in monocot |
Confirmatory test for starch
(GHS Gottigere) |
Change in colour | Change in colour due to chemical reaction | Change in chemical composition |