Building instrument and materials III

BASIC SCIENCE JSS1 Second term

Sub-Theme: Drawing practice

Theme Materials and processing

WEEK 5 and 6

Building instrument and materials 3

Performance objectives

Students should be able to:

  1. Construct shapes, circles, triangles, rectangles etc. with drawing instruments and materials.

Content

Basic freehand sketching for drawing circles, curves square box and irregular edge

Sketching a straight line

This is defined as the shortest distance between two points. We can use a free hand to draw a fairly straight line by the following procedures.

  1. Put a dash or dot far enough to the right-hand side of the paper.
  2. Start to draw a line from the left-hand side to join the dash or dot with your eyes fixed on the point.

Sketching a curve

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