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| | # Why do you think certain measuring standards are needed ? | | # Why do you think certain measuring standards are needed ? |
| | # Who formulates the standards | | # Who formulates the standards |
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| − | ===Activity No # Tangram===
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| − | This activity has been taken from the website :http://www.cimt.plymouth.ac.uk/projects/mepres/allgcse/bs7act1.pdf
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| − | {| style="height:10px; float:right; align:center;"
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| − | |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
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| − | ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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| − | |}
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| − | [[File:Tangram.jpg|200px]]
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| − | *Estimated Time : 40 minutes.
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| − | *Materials/ Resources needed: Chart papers, scissors, pencil, scale.
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| − | *Prerequisites/Instructions, if any
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| − | # The students should have understanding of basic shapes like square, rectangle, parallelogram, triangle and trapezium.
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| − | # They should be able to draw mentioned shapes accurately and cut exactly on boundaries.
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| − | *Multimedia resources
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| − | *Website interactives/ links/ / Geogebra Applets
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| − | *Process:
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| − | # This is a very old Chinese puzzle known as a tangram.
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| − | # Cut out the square below into 7 shapes.
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| − | # Cut out the 7 shapes and rearrange them to form:
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| − | (a) a square from two triangles, and then change it to a parallelogram;
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| − | (b) a rectangle using three pieces, and then change it into a parallelogram;
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| − | (c) a trapezium with three pieces;
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| − | (d) a parallelogram with four pieces;
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| − | (e) a trapezium from the square, parallelogram and the two small triangles;
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| − | (f) a triangle with three pieces;
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| − | (g) a rectangle with all seven pieces.
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| − | # Finally, put the pieces back together to form the original square.
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| − | *Developmental Questions:
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| − | # Were you all able to read and follow the instructions.
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| − | # Name and point the different shapes in the figure.
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| − | # Name the dimensions of each shape.
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| − | *Evaluation:
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| − | # Analyse how much space each shape is occupying.
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| − | # What can you refer to the space occupied by each shape.
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| − | *Question Corner:
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| − | # What are the characteristic properties of each shape: square, rectangle, triangle, parallelogram and trapezium ?
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| − | # What type of two triangles would you need to form a square ?
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| − | # What did you learn from this activity ?
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| | ==Concept #2.Informal units of measurements == | | ==Concept #2.Informal units of measurements == |
