Technical Drawing Skills AIMS Students will revisit the

Technical Drawing Skills AIMS: Students will revisit the topic of scale drawings. Identify the different uses of Projections/Pictorial imagines. The use of Angles in Technical drawings and the use of a geometry set, equipment to draw scale drawings. OBJECTIVES Session 1 • To Describe the uses of certain drawing equipment that will be used. • To carry out Various Activities in the Student pack on subject. • Learners will use drawing equipment (protractor ect) to draw Acute, Right, Obtuse and Reflex Angles from activity pack.

Technical Drawing Skills OBJECTIVES Session 2 • To identify the different types of angles that can be used in Technical drawings. • To carry out Various Activities in the Student pack on subject.

Technical Drawing Skills From information that you have had from previous sessions, describe in your own words ‘what you think Technical Drawings are’? in your groups write your answer on the flip chart paper provided.

Technical Drawing Skills Drawing Equipment

Technical Drawing Skills

Technical Drawing Skills

Technical Drawing Skills

Technical Drawing Skills

Technical Drawing Skills Let us take a look at how we use these types of equipment http: //www. youtube. com/watch? v=ovl. UO-SY 2 o 0&feature=related -

Technical Drawing Skills Graphical Symbols

Technical Drawing Skills Planning a Drawing

Technical Drawing Skills http: //www. youtube. com/watch? v=BLz. V Nj. ED 2 yg&feature=fvw -

Technical Drawing Skills Activity 1 Complete the first two questions in your Student Activity handout

Technical Drawing Skills First Angle Projections

Technical Drawing Skills Pictorial Projection Have a go at drawing these two pictorial drawings Isometric is always set at 30 degrees Axonometric is always set at 45 degrees

Technical Drawing Skills Oblique Projections

Technical Drawing Skills Production Drawings

Technical Drawing Skills Activity 3 Complete question five from your Student Activity Pack

Technical Drawing Skills Session 2 ANGLES

Technical Drawing Skills Obtuse Angles

Technical Drawing Skills Angles within Plain figures

Technical Drawing Skills Triangle 60 degrees + 3 = 180

Technical Drawing Skills Equilateral Triangle

Technical Drawing Skills Triangles

Technical Drawing Skills Quadrilateral Angles

Technical Drawing Skills Activity 1 Now complete question four from your Activity Pack

Technical Drawing Skills Circles

Technical Drawing Skills Area of a circle The area of a circle can be calculated by using the following formula: π x r 2 (π = Pi and r = radius). Pi is a letter of the Greek alphabet which stands for the value of the ratio between the diameter and the circumference of a circle. If the circumference of a circle is divided by the diameter, it approximately equals a figure of 3. 142. This figure is equal to π. Therefore, for the calculation of an area of circle : π = 3. 142 The diameter of a circle (d) can also be used to calculate the area: π x d 2/4 The circumference of a circle can be calculated by multiplying the diameter by the constant π which is approximately equal to 3. 142. Therefore π x d = The circumference. As the diameter d is twice the radius r, then d = 2 r The circumference can also be calculated using this information. Circumference = 2πr

Technical Drawing Skills Activity 3 Now complete the two sets of questions on circles from your Activity Pack

Technical Drawing Skills Glossary

Technical Drawing Skills Activity 5 Now complete question 6 from your Activity Pack