Lesson Three
Core learning objectives
Using new skills taught during the lesson pupils will be able to draw a 3rd angle projection of a screwdriver. They will understand how to project a drawing through front elevation, side elevation and plan adding dimensions to BS308.
They will learn a series of processes related to fixings, adhesives
and welds. Gain an understanding of the structural requirements
and tension points between blade and handle.
They will learn the theory of point hardening and tempering.
Extended learning objectives
In addition to the above the extended group will learn how to produce a side elevation in section.
SEN learning objectives
Through prepared handouts pupils with special needs will add to a pre-prepared sheet in order to complete a 3rd angle projection drawing of a screwdriver.
They will be provided with crib sheets in a language agreed with
the SENCO in order that they are able to describe the various
fixing methods and point hardening and tempering.
Lesson context
To ensure that all pupils understand how to produce a simple orthographic 3rd angle projection drawing. That more able pupils can extend this with a sectional side elevation. To be able to demonstrate the importance of fixing two components together where stress and tension are likely to fracture that fixing if correct methods are not followed. To show that metals unless processed correctly cannot withstand forces and are therefore unsuitable for the job they were designed to do.
Lesson structure
(Pre-lesson planning) Isometric drawing of a screwdriver to be redrawn in 3rd angle projection and a side sectional view. The drawing will be fully dimensioned. Experiments to be prepared in relation to fixing, adhesives and welds. Notes and crib sheets on point hardening and tempering and forging.
- Feedback on assessment of the last lesson and any points regarding homework. Hand out assessed homework.
- Explain the lesson - making references to what they will know, understand and be able to do by the end of this lesson. Give a clear indication of the tasks and how the lesson is planned.
- Demonstrate how to produce a 3rd angle projection drawing taking each view in turn.
- Layout of front elevation.
- Pupil task.
- Layout of plan view.
- Pupil task.
- Layout of side elevation. (extended group presented with sectional drawing)
- Pupil task.
- Ensure that line projection is understood and that they understand how to project at 90°.
- Group discussion on materials and fixing methods. Using a range of visual aids set up to examine fixings, adhesives, tension, welds. Example of point hardened and tempered blade and a blade only forged.
- Group work for disassemble and analysis of visual aids by pupils using differentiated prompt sheets
- Pupil completion of analysis prompts.
- Report back on finding by each group and teacher lead discussion on findings.
- Remind group the the homework from lesson 2 is due back at the start of lesson 4.
Equipment and materials
- Visual aids for disassembly and analysis task.
- Handouts and crib sheets.
- Drawing equipment for 3rd angle projection.
Homework
None this week. Design ideas to be handed in next lesson.
Risk Assessment
Hazard Identification |
Haz_x |
Risk_= |
RA |
Action |
Example Risk Assessment |
3 x |
1 = |
3 |
Satisfactory |
Are the test pieces firmly secure and safe? |
|
|
|
|
Are there adequate arrangements for eye protection? |
|
|
|
|
Are Test areas clear of any unnecessary hazards? |
|
|
|
|
Is there a procedure for checking out and checking in all screwdrivers? |
|
|
|
|
Are pupils made aware of safety requirements and behaviour during the lesson? |
|
|
|
|
Lesson evaluation
To be completed at the end of each lesson by the teacher-assessment to inform future planning.
