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From Karnataka Open Educational Resources
Surface area of a cone (view source)
Revision as of 04:06, 11 November 2019
, 04:06, 11 November 2019added Category:Mensuration using HotCat
Areas related to cone are introduced with geogebra sketch.
=== Objectives ===
=== Objectives ===
Understand surface area
To calculate surface area of a cone
===Estimated Time===
===Estimated Time===
===Materials/ Resources needed===
===Materials/ Resources needed===
Digital: Laptop, geogebra file, projector and a pointer.
Digital: Laptop, geogebra file, projector and a pointer.
Geogebra file: [https://ggbm.at/tmj6wz7s Sector of a Cone] , [https://ggbm.at/utngknkp Surface area of a cone]
{{Geogebra|tmj6wz7s}}{{Geogebra|utngknkp}}
===Process (How to do the activity)===
===Process (How to do the activity)===
The teacher after initial discussion on a cone and its properties can project the geogebra file and enable the understanding of derivation of formulae for surface area of a cone.
*Developmental Questions:
*Developmental Questions:
#What is a solid shape ?
#What is a solid shape ?
#What would be the formula to find the surface area of an ice-cream cone.
#What would be the formula to find the surface area of an ice-cream cone.
#What is the frustum of a cone.
#What is the frustum of a cone.
[[Category:Mensuration]]
