Lesson Notes By Weeks and Term - Senior Secondary 2

Lines in space

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TERM – 2ND TERM

WEEK TEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Technical Drawing

Topic: LINES IN SPACE

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Identify and describe the lines in space.

II.) Identify true length and true angles.

III.) Construct objects using the concept of lines in space.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher identify and describe all the lines in space.

Students listens attentively to the teacher                                                                         

STEP 2

EXPLANATION

Teacher discusses true length and true angles and also guide students to construct objects using the concept of lines in space.

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

LINES IN SPACE

Lines in space refer to lines that extend in three dimensions rather than being confined to a flat plane. These lines are used to represent the edges or outlines of three-dimensional objects. They can be classified into different types based on their orientation and relationship to the viewer, such as:

  1. Parallel lines.
  2. Intersecting lines.
  3. Skew lines.

 Additionally, lines in space are often depicted using various drawing techniques like perspective, isometric projection, or orthographic projection to accurately convey the spatial relationships between objects in a drawing.

 

True length and True angle

True length refers to the actual length of a line segment when it's projected onto a plane without any distortion. This is important in fields like engineering and architecture where accurate measurements are crucial.

 

True angle refers to the actual angle formed between two lines when they're projected onto a plane without any distortion. It ensures that angles are represented accurately, allowing for precise design and construction.

EVALUATION: 1. Two views of a line are shown below.

A. Draw full size, the given views

B. Determine the:

I. Horizontal and vertical traces

II. True angles of inclination to the horizontal and vertical plane.

III. True length.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively