Lesson Plan Course Title: Advanced Welding Session Title: Candle Holder (Project) Lesson Duration: 2 days to 1 week (varies by number of students and skill level) [Lesson length is subjective and will vary from instructor to instructor] Performance Objective: Develop welding skills and complete a specific project using those skills. Specific Objectives: Upon completion of this lesson, the learner will be able to: Identify all materials needed for this project. Identify all safety procedures needed. Use a cutting torch to cut straight lines (or Designs) in a vegetable can Safely bend the can so that it bulges out in order to make the project more appealing. Paint the can if necessary. Describe the process and what they did. Preparation TEKS Correlations: This lesson, as published, correlates to the following TEKS. Any changes/alterations to the activities may result in the elimination of any or all of the TEKS listed. Advanced Welding: 130.324(c)(2)(A)(B)(C)(D)(E)(F) …apply academic knowledge and skills required for postsecondary education; …use employers' expectations to evaluate student performance and customer satisfaction; …demonstrate the skills required in the workplace such as interviewing skills, flexibility, willingness to learn new skills and acquire knowledge, self-discipline, self-worth, positive attitude, and integrity in a work situation; …evaluate progress toward personal career goals; …communicate effectively with others in the workplace to clarify objectives; and …apply knowledge and skills related to health and safety in the workplace, as specified by appropriate government regulations. 130.324(c)(3)(A)(B)(C)(D)(E)(F)(G)(H)(I) …differentiate effective communication skills with individuals from varied cultures such as fellow workers, management, and customers; …demonstrate mathematical skills to estimate costs; Copyright © Texas Education Agency, 2012. All rights reserved. 1 …determine the impact of inaccurate readings of measuring devices on cost estimates; …justify the selection of a tool to make accurate measurements; …compute measurements such as area, surface area, volume, and perimeter; …calculate problems using whole numbers, fractions, mixed numbers, and decimals; …use a calculator to perform advanced computations; …apply right triangle relationships using the Pythagorean Theorem; and …defend the choice of a mathematical solution using estimation. 130.324(c)(4)(A)(B)(C)(D)(E) …use welding equipment according to safety standards; …dispose of environmentally hazardous materials used in welding; …determine the performance impact of emerging technologies in welding; …use appropriate personal protective equipment to follow safety measures; and …investigate the use of automated welding machines such as numerical control, computer numerical control, and robotics-controlled welding machines. 130.324(c)(5)(A)(B) …use knowledge of welding blueprints to complete an advanced project; and …inspect projects using welding blueprints. 130.324(c)(7)(A)(B)(C) …inspect welding projects of team members; …use advanced codes for weld inspections; and …critique welds of team members. Interdisciplinary Correlations: English: 110.42(6) – Reading/word identification/vocabulary development 110.42(6)(A)(B) …expand vocabulary development through wide reading, listening, and discussing; …rely on context to determine meanings of words and phrases such as figurative language, idioms, multiple meaning of words, and technical vocabulary; Instructor/Trainer References: Instructor experience. Copyright © Texas Education Agency, 2012. All rights reserved. 2 Instructional Aids: 1. Candle Holder PowerPoint Presentation 2. Candle Holder PowerPoint Presentation Slides 3. Candle Holder PowerPoint Presentation Handouts 4. Candle Holder PowerPoint Presentation Notes 5. Finished product for example (if one is available) Materials Needed: 1. Vegetable can of any size 2. Welding tip 3. Welding gloves 4. Pliers 5. Cutting hood/goggles 6. Spray paint (if desired) Equipment Needed: 1. Computer 2. Projector 3. Oxy-acetylene rig Learner Prior knowledge of welding and cutting techniques and procedures. Prior to the lesson, have the students bring empty (clean) vegetable cans from home. You could also ask the cafeteria to save their cans. Introduction Introduction (LSI Quadrant I): This is a great holiday gift project (Christmas, Mother’s Day, etc…) for the kids to do. Some students may like this project better than others. It creates a fun environment when using the cutting torch and shop materials. This project is also a good way to teach the kids how to cut a straight line. Copyright © Texas Education Agency, 2012. All rights reserved. 3 A suggested way to start is by talking about arts and crafts. Right now there is a huge demand for anything rustic. This project falls under the rustic category. Inform the learners that there is more to welding and cutting than just “welding and cutting”. Money can be made by doing metal arts and crafts. Outline Outline (LSI Quadrant II): Introduction. Review all the safety procedures and equipment usage procedures. Show PowerPoint. Demonstration: 1. Place a can on the cutting or welding table. 2. Find a starting point in the middle of the can. 3. Lower the welding tip down towards the can. 4. The neutral blue flame should slight penetrate through the can 5. Cut a straight line through the ribs of the can stopping where the ribs stop. 6. Pick the tip up. 7. Move about a 1/8 inch over and cut another line. 8. Repeat this process until the can has been completely cut through all the way around. 9. After the can has cooled, place one hand on the inside of the can and begin bending and prior outward so that a slight bulge begins to form in the middle of the can. 10. When you can no longer use your hands, apply slight pressure to both ends of the can until the desired bulge has been achieved. Instructor Notes: This lesson will help the student learning welding to increase their speed and proficiency. 1. Make sure all paper and glue has been removed from the outside of the can 2. I have found it easier to start in the middle of the can rather than on the ends 3. Be ready to cut once the tip has penetrated the can, otherwise the metal will melt too fast 4. Most vegetable cans are ribbed. The ribs make it easier for the kids to see the stopping point 5. Make sure that the tip is picked straight up at each end so that the can will not continue to melt in undesired areas. 6. Roll the can over and continue process 7. Make sure the kids use gloves when handling and bending the bulges because the can will be sharp 8. Bending from the inside is sufficient when utilizing smaller cans, but the bigger Copyright © Texas Education Agency, 2012. All rights reserved. 4 11. If the bulge seems “lopsided” use your hands once 12. Finally apply paint using the spray paint if deemed necessary. Ask if there are any questions. (gallon size cans will require pressure at both ends. 9. It may take several attempts to perfect this project. 10.Other designs can be used rather straight lines. (exp. Hearts, stars or other shapes 11. Refer to power point pics if more detailed information is required 12. Be sure to check out the follow up lesson regarding this project titled “Celebration Lights Lesson Plan. Application Guided Practice (LSI Quadrant III): Teacher works through problems/activity as students observe/follow along and record process/solution and/or take notes. Independent Practice (LSI Quadrant III): Students work independently or collaboratively (pairs, small groups, large groups, teams, etc.) to complete a new assignment similar to the guided practice assignment and related to the lesson objective. The major difference between the two application components is that independent practice is usually graded and recorded, though typically carries a less significant weight than a final, formal evaluation activity. Be sure to include all handouts, printed directions, and criteria on which practice assignment will be evaluated. Summary Review (LSI Quadrants I and IV): Copyright © Texas Education Agency, 2012. All rights reserved. 5 Ask learners if they have any questions Have each student state one fact that he/she learned during the lesson Restate lesson objectives or have students recall lesson objectives. Evaluation Informal Assessment (LSI Quadrant III): Select one of the following methods (or a similar method) for conducting informal evaluation of student understanding and/or learning prior to formal evaluation for grading purposes: • Teacher will monitor student progress during independent practice/application and provide independent re-teach/redirection as needed. • Students will complete “XYZ assignment” as a class work grade. • Teacher will conduct periodic progress checks and provide students with feedback in the form of an objective and/or subjective checklist based on project/assignment criteria (be sure to include a copy of the suggested instrument to be used and align criteria with formal assessment). Formal Assessment (LSI Quadrant III, IV): Demonstration of process or experiment – be sure to include printed directions for students as well as an evaluation checklist to be used to evaluate the demonstration. Extension/Enrichment (LSI Quadrant IV): • Peer teaching, tutoring, mentoring in welding. • Creating a new product and/or performing a curriculum-related service for a paying customer. • Applying learning/content to personal life (work or home) or other projects that the student wished to develop. Copyright © Texas Education Agency, 2012. All rights reserved. 6 Student Assignment 1. Place a can on the cutting or welding table. 2. Find a starting point in the middle of the can. 3. Lower the welding tip down towards the can. 4. The neutral blue flame should slight penetrate through the can. 5. Cut a straight line through the ribs of the can stopping where the ribs stop. 6. Pick the tip up. 7. Move about a 1/8 inch over and cut another line. 8. Repeat this process until the can has been completely cut through all the way around. 9. After the can has cooled, place one hand on the inside of the can and begin bending and prior outward so that a slight bulge begins to form in the middle of the can. 10. When you can no longer use your hands, apply slight pressure to both ends of the can until the desired bulge has been achieved. 11. If the bulge seems “lopsided” use your hands once more and bend to even the bulge back out. 12. Finally apply paint using the spray paint if deemed necessary. Copyright © Texas Education Agency, 2012. All rights reserved. 7