Scale drawing - Part 2

Activity investigates actual how a blue print represents actual dimensions.

Objectives
Measuring actual dimensions from a blueprint

Estimated Time
45 minutes

Prerequisites/Instructions, prior preparations, if any

 * The students should have knowledge about scale drawing.
 * They should know about scale factor.
 * They should understand that a scaling factor should be maintained as constant 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.
 * The activity on using standard measuring instruments should be done prior to this activity.
 * The students should have been introduced to area, calculations and unit conversions.

Materials/ Resources needed
Non digital: Graph sheets, scale, pencil

Process (How to do the activity)

 * 1) In the above blue print each individual unit is 4 feet.
 * 2) Explain the meaning of 1 unit.
 * 3) Each ceramic tile costs Rs 80 per square foot.
 * 4) How much would it cost to tile the bathroom ?
 * 5) How much would it cost to tile Kitchen, Living room and bedroom?
 * Developmental Questions
 * 1) Along with knowing the length and width of the scale model, what additional information do you need to know ?
 * 2) What is the scale factor here.
 * Evaluation
 * 1) What is 1 unit in the given blue print.
 * 2) What does '1 unit = 4 feet mean' ?
 * 3) What are the actual dimensions of each room ?
 * 4) What all factors do you need to know to estimate the painting costs for each of the rooms.
 * 5) Write down the sequential steps for the calculations.