Marking Out/Laying Out Lesson Plan for 9th Grade Students

Subject: Mechanical Engineering Technology

Grade/form: grade 9/ form 3

Periods/times: 3 periods/35 minutes each (triple period)

Topic: Marking out/laying out

Objectives & Outcomes: At the end of the lesson students were able to;

• Define marking/laying out.
• Understand the purpose and procedure of marking out or laying out a drawing and transferring it onto a work piece
• Be able to use a ruler, protractor, and calculator to mark out or layout a drawing onto a work piece
• Properly use measuring instruments.
• Understand and learn tools associated with marking/laying out.
• Apply knowledge of tools to an actual work piece.
• Read and interpret the layout on the work piece.

Instructional Materials

• Drawing tool (ruler, protractor, etc.)
• Calculator
• Work piece (can be a physical work piece or a virtual one in a CAD program)
• Pen or pencil
• Eraser
• Marking out tools (dot punch, center punch, odd-leg caliper, divider, scriber, engineer's square, hammer)

Introductory activity:

• Students will be asked to view different products on a table and asked how the engineer comes up with the design.
• Students will be given time to give their responses and will be guided.
• Students will then be asked to explain what tools are needed to design the outline of it and why you need to do a design before manufacturing/fabricating.
• Students then discuss their findings and will present them to the teacher.

Direct Instruction/Development

• Introduce the concept of marking out or laying out drawings onto a work piece. Explain that this is a necessary step in many engineering and design processes, and it is important to do it properly to ensure the accuracy of the final product.
• Show students the proper way to use a ruler to measure and draw lines on a drawing. Explain the importance of using a scale factor and keeping measurements consistent.
• Demonstrate how to use a protractor to measure and draw angles on a drawing. Explain the importance of using a scale factor and keeping measurements consistent.
• Show students how to use a set square to ensure that lines are at a 90-degree angle to each other.
• Teacher demonstrates how to use marking out tools on a work-piece and goes in detail with each tool mentioned above.

Guided Practice

• Provide students with a set of simple drawing templates and have them practice marking them out on a work sheet.
• Have students work in pairs to help each other with their marking out, and provide feedback and guidance as needed.
• Lead a class discussion about the importance of accuracy and precision in marking out drawings.

Independent Practice/evaluations

• Have students complete a simple project that requires them to mark out a drawing onto a work piece. This could be a simple machine shop project such as a bottle opener or a spanner.
• Encourage students to use the techniques and skills learned in the lesson as they complete their project.

Closure

• Review the key concepts covered in the lesson, including the importance of marking out drawings and the proper techniques to use.
• Ask students to share their completed projects and discuss any challenges they faced and how they were able to overcome them.

Assessment

• Observe students as they work on their independent practice projects and provide feedback on their marking out or layout techniques.
• Collect and review the completed independent practice projects to assess students' understanding of the concept.
• Take home assignment to draw the tools used in the lessons in their notebooks for the next class.

Other idea and notes;

• Ask students to stand up and stretch. Then, have them close their eyes and imagine an object in their everyday life, such as a pencil, a book, or a chair. Once they have a clear mental image of the object, have them draw a quick outline of the object on a piece of paper without using a ruler or any other tools.