TVL-ILLUSTRATION-Q2-M10 PDF

2 TECHNICAL VOCATIONAL LIVELIHOOD QUARTER TLE Illustration NCII – Grade 11 Quarter 2 – Module 10: Pictorial Drawing (Oblique Projection) First Edition, 2020 Republic Act 8293, Section 176 states that no copyright shall subsist in any work of the Government of the Philippine...

2 TECHNICAL VOCATIONAL LIVELIHOOD QUARTER TLE Illustration NCII – Grade 11 Quarter 2 – Module 10: Pictorial Drawing (Oblique Projection) First Edition, 2020 Republic Act 8293, Section 176 states that no copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education - Schools Division of Pasig City Development Team of the Self-Learning Module Writer: Raneth A. Yago Editor: Reviewers: Janeth M. Pineda Illustrator: Layout Artist: Management Team: Ma. Evalou Concepcion A. Agustin OIC-Schools Division Superintendent Aurelio G. Alfonso EdD OIC-Assistant Schools Division Superintendent Victor M. Javeña EdD Chief, School Governance and Operations Division Manuel A Laguerta EdD Chief, Curriculum Implementation Division Education Program Supervisors Librada L. Agon EdD (EPP/TLE/TVL/TVE) Liza A. Alvarez (Science/STEM/SSP) Bernard R. Balitao (AP/HUMSS) Joselito E. Calios (English/SPFL/GAS) Norlyn D. Conde EdD (MAPEH/SPA/SPS/HOPE/A&D/Sports) Wilma Q. Del Rosario (LRMS/ADM) Ma. Teresita E. Herrera EdD (Filipino/GAS/Piling Larang) Perlita M. Ignacio PhD (EsP) Dulce O. Santos PhD (Kindergarten/MTB-MLE) Teresita P. Tagulao EdD (Mathematics/ABM) Printed in the Philippines by Department of Education – Schools Division of Pasig City  Illustration Quarter 2 PICTORIAL DRAWING Module (OBLIQUE PROJECTION) 10 T E C H N I C A L VO C A T I O N A L L I V E L I H O O D Introductory Message For the Facilitator: Welcome to the Illustration 11 Self-Learning Module on Pictorial Drawing (Oblique Projection)! This Self-Learning Module was collaboratively designed, developed and reviewed by educators from the Schools Division Office of Pasig City headed by its Officer-in-Charge Schools Division Superintendent, Ma. Evalou Concepcion A. Agustin, in partnership with the City Government of Pasig through its mayor, Honorable Victor Ma. Regis N. Sotto. The writers utilized the standards set by the K to 12 Curriculum using the Most Essential Learning Competencies (MELC) in developing this instructional resource. This learning material hopes to engage the learners in guided and independent learning activities at their own pace and time. Further, this also aims to help learners acquire the needed 21st century skills especially the 5 Cs, namely: Communication, Collaboration, Creativity, Critical Thinking, and Character while taking into consideration their needs and circumstances. In addition to the material in the main text, you will also see this box in the body of the module: Notes to the Teacher This contains helpful tips or strategies that will help you in guiding the learners. As a facilitator you are expected to orient the learners on how to use this module. You also need to keep track of the learners' progress while allowing them to manage their own learning. Moreover, you are expected to encourage and assist the learners as they do the tasks included in the module.  For the Learner: Welcome to the Illustration 11 Self-Learning Module on Pictorial Drawing (Oblique Projection)! This module was designed to provide you with fun and meaningful opportunities for guided and independent learning at your own pace and time. You will be enabled to process the contents of the learning material while being an active learner. This module has the following parts and corresponding icons: Expectations - This points to the set of knowledge and skills that you will learn after completing the module. Pretest - This measures your prior knowledge about the lesson at hand. Recap - This part of the module provides a review of concepts and skills that you already know about a previous lesson. Lesson - This section discusses the topic in the module. Activities - This is a set of activities that you need to perform. Wrap-Up - This section summarizes the concepts and application of the lesson. Valuing - This part integrates a desirable moral value in the lesson. Posttest - This measures how much you have learned from the entire module.  EXPECTATIONS After completing this lesson, the students should be able to: A. Define Oblique projection and identify its classifications; B. Explain the advantages of using oblique projections in representing an object; C. Layout objects in cavalier and cabinet oblique projection. PRETEST Direction: Arrange the steps in drawing oblique projections by writing the letter in correct order. ________1. Clean up your drawing by removing unnecessary marks. Use three tone shading to show the face of the finished oblique projection. ________2. Complete the oblique cube by connecting the sides. ________3. Your instructor will give you an orthographic view of an object. Layout the horizontal and vertical lines. Draw the front face of your oblique cube, applying the given with and height. ________4. Using a protractor or 45 degree set square (30x60 set square if you preferer 30degrees projection) draw the receding lines and apply the given length. Take note of the type of oblique projection you are drawing; the cabinet oblique is typically half of the given length. ________5. Layout the faces of the orthographic views in the cube.  RECAP Let’s have a quick review of how much you have learned from our last module “Pictorial Drawing (Isometric Projection)” Direction: Write T if the statement is true and F if it is false ________1. When creating isometric projection, remember that all vertical lines are drawn vertically while horizontal lines are drawn in 120o. ________2. Axonometric, is a type of projection that has no axes and angles that are equal when projecting an object in three sides. ________3. Isometric came from the word “iso” meaning equal and “metric” drawing. ________4. The six principal views of orthographic and pictorial drawing are front view, top view, bottom view, rear view, left side view, and right-side view ________5. The three types of Pictorial drawing are Axonometric, Oblique and Left cross axis LESSON PICTORIAL DRAWING (OBLIQUE PROJECTIONS) Pictorial drawing based on our last module shows the likeliness of the object as viewed by the observer. Its goal is to project a portion of this object in one or more view with just one illustration. We’ve also discussed that there are three types of pictorial drawing used by draftsmen- Axonometric, oblique and perspective. Today we will discover oblique projections and why it is more popular than the isometric projection in representing an object. Let’s begin… Types of Pictorial Drawing A. Axonometric Pictorial Drawing B. Oblique Pictorial Drawing. This projection is similar to isometric projection that shows the objects front and top surface in a three-dimensional view that include the width, depth and height.  Oblique projection, unlike isometric, the front face is always parallel to the front plane meaning its not angled in 30o (see figure below). That is why draftsmen prefer this pictorial projection because the object drawn in this method is more realistic than of the isometric that appears to be skewed. Axes of Oblique Drawing a. vertical axis b. horizontal axis c. receding axis The front view of the object is located in the horizontal and vertical axis which is parallel to the frontal plane, and the angle of projection depends on the angle of the receding axis, it is typically drawn in 60o, 45o, or 30o. The direction of the receding lines can be on the top-left, top-right, bottom left or bottom right. Classification of Oblique Projections a. Cavalier oblique drawing. This is a oblique drawing where in all lines are drawn in full depth that includes the receding lines. Its purpose is to illustrate the objects true length. This makes an angle of 45o and 30o b. Cabinet Oblique drawing. Cabinet oblique on the other hand are drawn with reduced by typically a half of the actual depth. The angle of projection or the receding lines makes an angle of 30o, 45o or 60o https://sites.google.com/site/scottiedportfolio/2-- -technical-sketching-and-drawing How it is done: 1. Your instructor will give you an orthographic view of an object. Layout the horizontal and vertical lines. Draw the front face of your oblique cube, applying the given with and height. 2. Using a protractor or 45 degree set square (30x60 set square if the given is 30degrees projection) draw the receding lines and apply the given length. Take note of the type of oblique projection you are drawing; the cabinet oblique is typically half of the given length. 3. Complete the oblique cube by connecting the sides. 4. Layout the faces of the orthographic views in the cube. 5. Clean up your drawing by removing unnecessary marks. Use three tone shading to show the face of the finished oblique projection. ADVANTAGES: 1. You can choose the suitable angle to project that will emphasize a particular view of the object. 2. It gives focus on the front side view of an object 3. Objects drawn in oblique projection looks more realistic than of the isometric projection. ACTIVITIES Activity A. Draw a 45o, 3 cm x 3 cm x 3 cm oblique cube, one cavalier and one cabinet oblique, following the given dimensions on the space provided below. Use ruler and set square or protractor for actual measurements, then apply three tone shading to identify the faces of the cube. Activity B. In your sketch pad, draw the oblique projection of the orthographic view below, one cavalier and one cabinet oblique. Do not remove the construction lines, this will serve as the instructor’s reference when checking.  Rubric in Assessing Performance output Criteria Percentage Score Accurate measurements 40% Compliance to the given oblique 40% projection Neatness 20% Remarks: WRAP-UP Let’s summarize your understanding from this module by listing down the concepts you have learned. Provide a short description for each concept you’ll be writing about “Pictorial Drawing (Oblique Projection)”. ✓ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ✓ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ✓ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ✓ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ✓ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________  VALUING SHORT ESSAY: Based on your isometric and oblique projection activities, which method is more convenient in projecting an object in multiple view? Why? ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ POSTTEST Direction: Fill in the missing terms and concepts to complete the following statement. Write your answer on the space provided below. 1. ____________________ oblique drawing is an oblique drawing where in all lines are drawn in full depth that includes the receding lines. 2. Pictorial drawing shows the likeliness of the object as viewed by the ____________. 3. Oblique projection starts with the analyzation of the given __________________ view. 4. The axes in oblique projections are vertical axis, horizontal axis and ___________. 5. The cabinet oblique projection is typically drawn with ____________ the actual length.  KEY TO CORRECTION PRE-TEST RECAP POSTTEST 1. E 1. T 1. CAVALIER 2. C 2. F 2. OBSERVER 3. A 3. F 3. ORTHOGRAPHIC 4. B 4.T 4. RECEDING LINES 5. D 5.F 5. HALF References “Chapter 17: Oblique Projection,” n.d. http://dossin.weebly.com/uploads/7/9/8/6/7986350/chapter_17- _power_point.pdf. “Fundamentals of Drafting - Oblique Projection,” n.d. “Oblique Drawing, Projection - Its Types, Examples.” CivilSeek, October 16, 2018. https://civilseek.com/oblique-drawing-projection/. “Oblique Projection.” Wikipedia. Wikimedia Foundation, October 8, 2020. https://en.wikipedia.org/wiki/Oblique_projection. Viva. “Orthographic Vs Oblique Projection: What Is The Difference?” Viva Differences, February 25, 2020. https://vivadifferences.com/difference- between-orthographic-and-oblique-projection/.