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From Karnataka Open Educational Resources
→Concept #4. Scale drawing
==Concept #4. Scale drawing==
==Concept #4. Scale drawing==
===Learning objectives===
===Learning objectives===
# The students should comprehend that a Scale drawing is a drawing that shows a real object with accurate sizes except they have all been reduced or enlarged by a certain amount (called the scale).
# Since it is not always possible to draw on paper the actual size of real-life objects such as the real size of a car, an airplane, we need scale drawings to represent the size.
# Drawing to scale is a tool that Engineers use for many different tasks. One key part of every scale drawing is the scaling factor. This number represents the degree to which our scale drawing or scale model has been reduced in size when compared to the original.
# Maintaining as constant a scaling factor throughout the sketches.
# Students should be able to read and understand a scaling factor.
# They should be able to find a scaling factor and create a scale drawing.
===Notes for teachers===
===Notes for teachers===
===Activity No # ===
===Activity No # ===
*Evaluation
*Evaluation
*Question Corner
*Question Corner
= Hints for difficult problems =
= Hints for difficult problems =
