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Elementary science unit plan Essay Example

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Elementary science unit plan

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Place one-one egg in each of the containers. Ask the students to observe carefully. Explain the fundamental that by adding salt the density of water increased. Salt water is denser as compared to the normal water. As soon as eggs are placed in the jars containing normal water and salt water, the egg in the normal water sinks while egg in the saline water floats. This is because of the density of water. Since addition of salt increased the density of water, the egg seems to be less dense and hence it floats on the surface of water. Explain addition of salt should be monitored closely. Add little salt and then place the egg on the surface of water it may not float. Add some more salt and then place the egg it may remain suspended, keep adding salt till the egg floats on the surface of water.The main objective is to make the students understand the concept of interconversion of diverse states of matter on the basis of heating and cooling. Conceptual understanding and experimental representation enable students to communicate scientifically with their immediate environment and relate density and buoyancy in nature. Explain the fact that raisins have more density than soda and therefore it sinks. However, soda is a carbonated drink and contains carbon di-oxide. As a result, air bubbles attach to the raisin and this makes the raisin rise up through the liquid. This is because carbon-di-oxide provides raisins with extra buoyancy, enabling it to float to the surface of the glass container. As soon as the bubbles detach themselves from the raisin it sinks again. The process of rise and fall or raisin will continue as long as the soda has fizz. When the carbon-di-oxide diffuses off the raisins will not get the lift. Make sure that students understood the concept of floating and sinking. Students must be in a position to differentiate between sinking and floating. Provide the students with day-to-day real life objects such as wood, a block of aluminum, milky plastic and clear plastic. They should hold the objects in hand and assess if they sink or float. In this manner students will learn to differentiate sinking or floating phenomenon of various objects made up of different

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preview essay on Elementary science unit plan
  • Pages: 8 (2000 words)
  • Document Type: Essay
  • Subject: Education
  • Level: Undergraduate
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