DEFINE IT:
The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a 3-dimensional scale model of a building or the scale drawings of the elevations or plans of a building.
THINK ON IT
Scale models are important because it allows designers to make an object in a lower cost and it is a replica of the real one.Scale models are used when they are used to create maps and other scale diagrams. When things are too big to draw on paper, scale factors are used to calculate smaller, proportional measurements. Floor plans for house designs are drawn on a smaller scale.Scale drawings are a useful tool for any designer, because they can be used to plan, visualize and adjust landscape plans before breaking ground. Scale drawings assign each object the same scale compared to the actual objects.
The 4 fields in which scale drawing or models are used:
Architect's : architect are used for structures and buildings. They are used to measure interior and exterior dimensions such as rooms, walls, doors, windows, and fire protection system details.
Engineers:An engineer's is an instrument that is similar to a ruler and is used to measure scale on technical drawings.
Mechanical drafters:Mechanical drafters prepare layouts that show the details for a wide variety of machinery and mechanical tools and devices, such as medical equipment.
Explore it
Finding the height,length and width of an object,by using a scale ratio to Solve the problem.Using the 3 objects a car,television and a bed and finding to ratio of the object.
Create it
Using cm for the toys and drawing of a real life item of a car,
television and a bed and showing the height, width and length of the object and comparing the real with the small replica object.
Toy Car:
height:7cm 140÷7=20 (1:20)
Length:10cm 450÷10=45 (1:45)
Width:8
Real car:
Height: 140cm
Length:450cm
Width:190cm
Television drawing:
Height:10cm 70÷10=7 (1:7)
Length :15cm 153÷15=10.2(1:10.2)
Width :5cm 121÷5=24.2 (1:24.2)
Real television:
Height:70cm
Length:153cm
Width:121
Drawing of bed:
Height:10cm 40÷10=4 (1:4)
Length:16cm 80÷16=5 (1:5)
Width:15cm 75÷15=5 (1:5)
Real bed
Height:40cm
Length:80cm
Width:75cm
Reference
https://www.oxfordreference.com/view/10.1093/oi/authority.20110803100405429
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