Scale drawing - Part 1

This activity explores representation of actual distances on paper using proportional distances.

Objectives

 * Representing actual distances on paper using proportional distances.
 * Understanding meaning of scale

Estimated Time
1 hour

Prerequisites/Instructions, prior preparations, if any

 * Skill of measuring and tabulating accurately.
 * Knowledge of ratio and proportions.

Materials/ Resources needed
Non digital : Scale, pencil, graph paper.

Process (How to do the activity)

 * 1) This activity can be done in groups by grouping 3 students in each.
 * 2) The students should measure distances of library, dinning hall, principal's room, entrance gate, playground etc from their class room using a measuring tape in metres.
 * 3) The teacher can mark reference points for each and explain to the students.
 * 4) The students should accurately measure and note down.
 * 5) After coming to the classroom let the teacher tabulate all distances on the blackboard.
 * 6) Next ask the students to represent their observation of distances by drawing their school model on paper.
 * 7) Ask them how will they go about it so that the distances are represented proportionately.
 * 8) The teacher can then elicit from the students that a proper equivalent unit has to be used for the purpose.
 * 9) After this activity she can spell out the term scale and discuss about the blue print of a house, mapping distances, atlas maps, model constructions and so on.
 * 10) This activity can be done to introduce the students to the concept of scale drawing.
 * Developmental Questions
 * 1) What did you measure ?
 * 2) What measuring instrument did you select ? Why ?
 * 3) What was your reading ?
 * 4) which unit do you use ?
 * Evaluation
 * 1) Were the students able to comprehend which measuring instrument should be used for particular items ?
 * 2) Were they taking measurements accurately ?
 * 3) Were they able to document their observations appropriately in a tabular form ?
 * Question Corner
 * 1) Discuss the applications of scale drawing ?
 * 2) What is a scale factor ?