Lesson Plan
Course Title: Construction Technology
Session Title: Grading Lumber
Time:
1-2 hours to several class periods.
[Lesson length is subjective and will vary from instructor to instructor]
Performance Objective:
Understand and visually identify the dimensions and types of standard lumber
commonly used in construction.
Specific Objectives:
Upon completion of the following lesson, the learner will be able to:
Explain the difference between the nominal and actual sizes of lumber. Identify
the dimensions of standard lumber.
Describe procedures taken to identify the grade of a lumber.
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.
130.54. Building Maintenance Technology
(a) Recommended for students in grades 10-12 with the recommended
prerequisite of Principles of Architecture and Construction;
(b) Students will gain knowledge and in plumbing, electrical, and Heating,
Ventilation, and Air Conditioning (HVAC) systems. Additionally, students
learn methods for repair and installation of drywall, roof, and insulation
systems.
(c) Students will develop knowledge and skills pertaining to employment,
safety, interpreting schematics, fuses, circuit breakers, lamps, fixtures,
electrical test equipment, HVAC, copper/plastic piping and fittings,
conventional and electric thermostats and landscaping.
Interdisciplinary 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.
110.xx(6) - Reading/vocabulary development
110.xx(6)(A)
...expand vocabulary through wide reading, listening, and discussing...
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Instructor/Trainer
References:
•
Various web resources
•
Instructor knowledge
•
Goodheart-Willcox Company Inc., Modern Carpentry
•
Glencoe, Carpentry and Building Construction
•
http://muextension.missouri.edu/explore/agguides/forestry/g05053.htm
•
http://www.lowes.com/
Instructional Aids:
1.
2.
3.
4.
5.
Lumber Grades Power Point Presentation.
Lumber Grade Handout.
Lumber Size Chart .
Grade and Size Lab Activity Lab.
Activity Scoring Rubric.
Materials Needed:
1. Copies of Lumber grade handout.
2. Copies of lumber size chart.
3. Copies of lab activity sheet.
4. At least one board of each standard size in the chart.
5. Labels for lumber to differentiate the boards.
Equipment Needed:
•
•
•
•
Computer
Projector
Tape measure
Shelf or table to hold lumber
Learner
Paper and pen or pencil.
Introduction
Introduction (LSI Quadrant I):
Hold up a "2 X 4".
Ask the students to raise their hand if they know the dimension of the board. Let one
student actually give their answer. ( Most will not raise their hand and their answer if
correct will be a nominal dimension.)
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Have a student measure the board with a tape measure and give the actual
measurement for
the board. ( it should be 1 ½" X 3 ½")
Say: "Every board has two sets of dimensions; one is the nominal dimension and the
other is
the actual dimension. We will be addressing these for each type of board."
Outline
Outline (LSI Quadrant II):
Instructor Notes:
Write objectives on the board before class.
Bring in various types of
1. Lumber dimensions
lumber materials for
A. Introduction
students to view.
B. Basic Definitions
1. Nominal dimensions
2. Actual dimensions
Instructors can use the
C. Dimensions for standard lumber
PowerPoint
1. 2 X 6 2. 2 X 8
presentation, handouts,
D. Have students form a pattern
and web link in
E. Present the exception to the pattern
conjunction with the
1. 2 X 10 and 2 X 12
following outline.
F. Give the students the lumber size chart.
G. Address dimensions of all 1" by lumber.
1. 1 X 4 dimensions 2. 1 X 6 dimensions
H. Have students formulate a pattern and predict
actual dimensions when given a nominal dimension.
2. Grades of Lumber
A. Grade Stamps
1. The grading agency
2. The species of lumber
3. The grade
4. The mill identification 5. The moisture content
B. Give students copy of the grading chart.
C. Grading Lumber Class
1. Construction
2. Standard
3. Utility
4. Select structural
a. 1 b. 2 c. 3
5. Stud
3. Have students become familiar with grading chart
and memorize the dimension chart.
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Application
Guided Practice (LSI Quadrant III):
Students will give actual dimensions for given nominal dimensions. ( Worksheet 1)
Students will identify orally the five parts of the grade stamp found on lumber
(PowerPoint).
Independent Practice (LSI Quadrant III):
Give each student their own lab activity worksheet. The student will perform the tasks
asked in a safe and timely manner.
Summary
Review (LSI Quadrants I and IV):
Ask the following:
1. What is the difference between a nominal and an actual dimension.
(Nominal is the size by which it is known and sold in the market. Actual is the
size after surfacing.)
2. At what lumber size does the pattern for lumber dimensions change.
( any board with a width of 10")
3. What are the common similarities between the 1 X 4 and the 2 X 4?
(The width dimension for both is the same.)
4. Give one part of the Grade Stamp?
( Agency, Species, Grade, Mill identification, Moisture content
Evaluation
Informal Assessment (LSI Quadrant III):
Instructor should monitor while students are practicing. During this time, you may wish
to re-teach various elements of the lesson or teach in a different way. Question students
on lumber terms, types, and grades.
Formal Assessment (LSI Quadrant III, IV):
Use Lab Activity worksheet and rubric given.
Extension/Enrichment (LSI Quadrant IV):
Students that have mastered the lab assignment can use this concept to obtain proper
materials for future construction projects.
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Copyright © Texas Education Agency, 2011. All rights reserved.
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