Agricultural Mechanics I

Transcription

1 Elizabethtown Area School District Agricultural Mechanics I Course Number: 721 Length of Course: 1 semester 18 weeks Grade Level: Total Clock Hours: 120 hours Length of Period: 84 minutes Date Written: January 30, 2007 Periods per Week/Cycle: 5 periods/week Written By: Mark Anderson Credits (if app):1.0 Jonathan Hess Course Description: This course will cover the operation, maintenance, repair, and servicing of small gasoline engines. Students will disassemble, troubleshoot and reassemble several Briggs & Stratton 3-6 horsepower engines. The course will also introduce students to electric arc welding and oxyacetylene gas welding. Students will complete classroom lessons and hands-on applications of basic welder operation, welding safety, types of welds, welding positions, and heating, bending, and cutting of mild steel. Basic skills will be enriched with instruction and limited use of the plasma cutter. Students will complete required welds and welding projects. Students in this course are encouraged to join and participate in the Elizabethtown FFA Chapter. 1

2 I. Overall Course/Grade Level Standards Students will KNOW and be able TO DO the following as a result of taking this course. A) Identify the strokes of a 4-stroke and 2-stroke engine. B) Explain the principles of engine operation. C) Identify the parts of a small gas engine. D) Describe the function of the parts of a small gas engine. E) Identify the tools/equipment used to work on small gas engines. F) Describe the function of the tools/equipment used to work on small gas engines. G) Accurately measure small gas engine parts. H) Disassemble a small gas engine. I) Troubleshoot a small gas engine. J) Reassemble a small gas engine. K) Perform routine maintenance on small gas engines. L) Recommend replacement parts for small gas engines. M) Identify the safety rules to follow when working with small gas engines. N) Identify the various types of welding. O) Identify the parts of electric and oxyacetylene gas welders. P) Describe the safety rules to follow when using various welding tools and equipment. Q) Demonstrate welding skills in various welding positions. R) Properly select welding equipment including electrodes. S) Cut metal using the oxyacetylene torch. T) Follow a set of plans/blueprints to construct welding projects. U) Use measuring tools/equipment to layout welding projects. V) Properly finish welding projects (painting, etc.). 2

3 II. Content Major Areas of Study List all units of study below: Unit Estimated Time Materials 1. Engine Operation 3 weeks Textbooks, small engines, various resources 2. Engine Troubleshooting 3 weeks Tools/equipment, small engines, various resources 3. Engine/Equipment Maintenance and Service 3 weeks Mowers, small engines, tools/equipment, various resources 4. Welder Selection and Operation 1 weeks Textbooks, welders, various resources 5. Welding Safety 1 week Textbooks, welders, various resources 6. Process Welding - Application 4 weeks Welders, metal, various resources 7. Welding Project Design and Construction 3 weeks Welders, metal, various resources 3

4 III. Course Assessments Check types of assessments to be used in the teaching of the course and provide examples of each type. X Objective Tests/Quizzes Constructed Responses Essays Reports X Projects Portfolios X Presentations X Performance Tasks [Click here to enter other] Response Journals Logs Computer Simulations Research Papers X Class Participation X Note Taking X Daily Assignments Writing Samples [Click here to enter other] Provide copies of common assessments that will be utilized for all students taking this course. Overall course/grade level standards will be measured by a common course assessment. Unit objectives will be measured on an ongoing basis as needed by the classroom teacher to assess learning and plan for instruction. List common assessments below and recommend date/time frame for administration (at least quarterly). Name of Common Assessment When given? 1. Unit Tests At end of each unit 2. Final Exam At end of semester 3. Projects During and at end of each unit 4

5 IV. Expected levels of achievement Current grading scale As defined in the current school grading policy and outlined in the student handbook. PA Proficiency Levels Advanced Proficient Basic Below Basic The following scoring documents have been developed for this course: 5

6 Course Name: Agricultural Mechanics I Name of Unit: Engine Operation Essential Question: How do small engines operate? Unit Objectives/Key Question Priority Aligned to Course Standard Aligned to PA Standard 1. What are the 4 strokes of a 4-stroke engine? E A C C 2. What are 2 strokes of a 2-stroke engine? I A C C 3. What are the major parts and their function of a E A, B, C, B small gas engine? 4. What are the tools/equipment and their function E E, F, B used to work on small engines? 5. What are the safety rules to follow when working with small engines? E M A, B 4a

7 Course Name: Agricultural Mechanics I Name of Unit: Engine Troubleshooting Essential Question: How do I troubleshoot a small gas engine? Aligned to Aligned to PA Unit Objectives/Key Question Priority Course Standard Standard 1. How do I use small engine measuring tools? E E, F, G, B 2. How do I disassemble a small gas engine? E H C, B 3. How do I evaluate/test engine performance? E I C, B 4. How do I reassemble a small gas engine? E J C, B 5. How do I adjust a small gas engine for optimum performance? E I, J, K, L C, B 4b

8 Course Name: Agricultural Mechanics I Name of Unit: Engine/Equipment Maintenance and Service Essential Question: How do I perform small engine service? Aligned to Aligned to PA Unit Objectives/Key Question Priority Course Standard Standard 1. How do I change the oil in a small gas engine? E K, L C 2. How do I clean the air filter in a small gas engine? E K, L C 3. How do I clean and re-gap the spark plug? E K, L C 4. How do I sharpen and balance a mower blade? E K, L C 4c

9 Course Name: Agricultural Mechanics I Name of Unit: Welder Selection and Operation Essential Question: How do welders work? Unit Objectives/Key Question Priority Aligned to Course Standard Aligned to PA Standard 1. What kinds of welders are used in industry today? E N, P C 2. How do I select the correct welder for the job? I N, P C 3. How does an arc welder function? E N, O, P C 4. How does an oxyacetylene welder function? E N, O, P C 5. How does a MIG welder function? I N, O, P C 4d

10 Course Name: Agricultural Mechanics I Name of Unit: Welding Safety Essential Question: How can I stay safe in the welding shop? Unit Objectives/Key Question 1. What are the safety rules/procedures to follow when arc welding? 2. What are the safety rules/procedures to follow when oxyacetylene welding? 3. What are the safety rules/procedures to follow when MIG welding? 4. What are the general safety rule/procedures to follow when working in the ag mechanics shop? Priority Aligned to Course Standard Aligned to PA Standard E P B, C E P B, C I P B, C E M, P B, C 4e

11 Course Name: Agricultural Mechanics I Name of Unit: Process Welding - Application Essential Question: How do I put welding theory into practice? Unit Objectives/Key Question 1. How do I perform various arc welds in the flat position? (Includes bead, butt, lap, and fillet welds) 2. How do I perform various oxyacetylene welds in the flat position? (Includes puddle, filler, butt, and braze welds) 3. How do I perform various MIG welds in the flat position? (Includes bead, butt, lap, and fillet welds) Priority Aligned to Course Standard Aligned to PA Standard E P, Q, R C E P, Q, R, S C I P, Q, R C 4f

12 Course Name: Agricultural Mechanics I Name of Unit: Welding Project Design and Construction Essential Question: How do I design and fabricate my own welding project? Unit Objectives/Key Question Priority Aligned to Course Standard Aligned to PA Standard 1. How do I read project plans/blueprints? E T C 2. How do prepare project parts for assembly? I T, U C 3. How do I assemble the final project? E Q, R, T, U C 4. How do I finish (grind, paint, etc.) the final project? I V C 4g

13 Lincoln Electric Floor Lamp Rubric (200 points) A. Materials No Part. Yes 1. Lamp Rod cut to length (1/2 4ʼ) Legs (3) cut to length (3/8 2ʼ) Large Scrollwork cut to length (1 x1/8 31 ) Small Scrollwork cut to length (1 x1/8 6 ) Top plate cut to length (1 x1/8 22 ) Materials brushed to remove oxidation Sharp edges removed B. Bending No Part. Yes 1. Leg hooks bent correctly (1&3/8 I.D.) Legs bent with gradual curves Legs with no spiraling scrollwork with gradual curves scrollwork with gradual curve top plate hook bent correctly (1&5/8 I.D.) Scrollwork with no spiraling C. Welding No Part. Yes 1. Beads correct width Beads correct length Beads are consistent Beads are straight Beads have proper penetration Plug bead works from the center out D. Fabrication & Alignment No Part. Yes 1. Legs 120 degree spacing overlap with legs and lamp rod Lamp rod is plumb and vertical /8 holes drilled at correct locations (5 holes) /2 holes drilled at correct locations (2 holes) Scrollwork weld is ground smooth Scrollwork perpendicular to lamp rod (90 degrees) Plug welds ground flush and smooth E. Finishing No Part. Yes 1. Primer coat Sand between coats Finish coat (no drips or runs) h

14 F. Lamp Assembly No Part. Yes 1. Parts assembly Electrical assembly (correct wiring) Proper operation G. Utilization of Tools & Materials Poor OK Good 1. Proper utilization of tools Efficient use of materials Efficient use of time i