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A Kite and its properties (view source)
Revision as of 11:37, 19 December 2013
, 11:37, 19 December 2013no edit summary
==Concept #2. Measurements in a kite==
==Concept #2. Measurements in a kite==
===Learning objectives===
===Learning objectives===
# A kite has two pairs of congruent sides.
# Its diagnols intersect at right angles.
# The sum of its four sides would be its perimetre.
# Its area is given by the formula <math>1/2 x product of its diagnols </math>
===Notes for teachers===
===Notes for teachers===
===Activity No # ===
===Activity No # Deriving formula for area of a kite===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
|<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;">
|<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;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
|}
*Estimated Time
*Estimated Time : 30 minutes.
*Materials/ Resources needed
*Materials/ Resources needed: Laptop, geogebra file, projector and a pointer.
*Prerequisites/Instructions, if any
*Prerequisites/Instructions, if any
*Multimedia resources
# They should know a kite and its properties.
# The students should know the concept of an area.
# They should know the formula to find the area of a triangle.
*Multimedia resources: Laptop
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Process:
*Evaluation
# The teacher can project the geogebra file on kite.
*Question Corner
# Show them that a kite is made of two isosceles traingles.
# Sum of areas of these two triangles would be the area of the kite.
*Developmental Questions
# What is a kite /
# What are the properties of a kite.
# What other figures can you see in a kite ?
# What types of triangles are these ?
# Identify the two isosceles triangles ?
# What is the formula to find the area of a triangle ?
*Evaluation:
# Choosing which two traingles out of the 8 visible types would be easy to deduce the area of kite ?
*Question Corner:
# Recall the two formulae that you know to find the area of a triangle.
===Activity No # ===
===Activity No # ===