Lesson Plan
Course Title: Advanced Welding
Session Title: Applying Metrics for Welding 2
Lesson Duration:
1 hours (3 hours for total unit)
[Lesson length is subjective and will vary from instructor to instructor]
Performance Objective:
Upon completion of this assignment, the student will be able to perform metric
conversions.
Specific Objectives:
Upon completion of this lesson, the learner will be able to:
1. Compare metric conversions.
2. Explain Standard Conversions.
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)(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;
…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.
Interdisciplinary Correlations:
1
Copyright © Texas Education Agency, 2012. All rights reserved.
110.xx(6) - Reading/word identification/vocabulary development
110.xx(6)(A)
...expand vocabulary development through wide reading, listening, and
discussing;
111.22(6) – Mathematics
111.22(B)8(D)
...convert measures within the same measurement system (customary and
metric) based on relationships between units.
Instructor/Trainer
References:

• Blueprint Reading for Welders (Bennett & Siy,1999)
• Intro to Welding Student Material (Mid-America Consortium, 1984)
Instructional Aids:
The second of 3 lessons in this unit:
1.
2.
3.
4.
Applying Metrics for Welding PowerPoint 2
Metric Conversions Handout
Metric Test
Metric Test Key
Materials Needed:

• Prefixes chart.
• Conversion chart.
• 3 liter bottle of soda pop.
• Computer and projector for PowerPoint.
Equipment Needed:

• Metric ruler for each class member;
• Items from classroom to measure;
• Computer for PPT presentation.
Learner
Prior mastery of standard linear measurement
Introduction
2
Copyright © Texas Education Agency, 2012. All rights reserved.
Introduction (LSI Quadrant I):
Use a 3 liter bottle of soda/pop as an example of how we already use metrics in the
U.S. today as opposed to the rest of the world who already uses metrics.
Ask: “How is a bottle’s volume measured and how much liquid is in the bottle?

Use the questioning to engage in conversation about the U.S. and the rest of the world’s
use of metrics. Discuss the variety of student responses.
Outline
Instructor Notes:
Outline (LSI Quadrant II):
• Introduction
• Show PowerPoint 2 and discuss.
• Metric Conversions
• Compared to decimal numeration
• Base Unit:
• milli
• centi
• deci
• deca
• hecto
• kilo
• Linear Conversions
• Inches to millimeters
• Feet to meters
• Yards to meters
• Area Conversions
• Square inches to square millimeters
• Square feet to square meters
• Square yards to square meters
• Volume Conversions
• Cubic inches to cubic millimeters
• Cubic feet to cubic meters
• Guided practice desk measurement.
• Independent practice measurement.
• Review
• Test at the end of lesson 3.
Review elements from lesson
one as needed.
Prior to the lesson, choose
several items to be measured
for independent practice portions
of lesson cycle.
Application
Guided Practice (LSI Quadrant III):
3
Copyright © Texas Education Agency, 2012. All rights reserved.
Students use charts to fill in information during PowerPoint presentations 1 & 2. During
PowerPoint 3, students take notes on own paper. During Guided practice desk
measurement,
give each student a metric ruler and have the students measure their desk/table tops.
Independent Practice (LSI Quadrant III):
Have students choose or use an assigned partner to go into the shop or classroom and
measure a designated object. Students should write down results. Teams should switch
results with another team and check the team’s work by measuring the opposing team’s
object.
Summary
Review (LSI Quadrants I and IV):
Do an oral review of the material by asking specific conversion questions to individual
class members. Encourage responses by rewarding correct answers with praise and
incorrect answers with positive reinforcement and redirection.
Evaluation
Informal Assessment (LSI Quadrant III):
Observational performance: check as students are measuring designated objects.
Formal Assessment (LSI Quadrant III, IV):
Students complete test at the end of the unit on metrics (after all three lesson plans in
this series).
Extension/Enrichment (LSI Quadrant IV):
Use of metrics will be applied in future shop experiences and in the work place.
4
Copyright © Texas Education Agency, 2012. All rights reserved.
Metric Conversions Handout
Comparison to Decimals
Decrease{ milli
centi
deci
base unit
Increase{ deka
hecto
kilo
Linear Conversions
From
To
Multiply by
Area Conversions
From
To
Multiply by
Volume Conversions
From
To
Multiply by
5
Copyright © Texas Education Agency, 2012. All rights reserved.
Applying Metrics to Welding Test
1. For the following terms, select those metric expressions which are presented
incorrectly and revise them so they are correct. If correct, leave blank.
a. 4 ¾ mm ______________
b. 0.10 mm _____________
c. 18.67 Mm ____________
d. 16 ½ mms. ____________
e. 12,750 mm ____________
f. 0.7 millimeters __________
2. What is the metric equivalent conversion for:
a. Thousandths--b. Tenths—
c. Hundreds—
3. Fill in the missing information
Quantity
Length
Mass
Time
Electric Current
Temperature
Amount of substance
Luminous intensity
Name
Symbol
4. Convert the following to metric values:
a. 9/16 in. _____________mm
b. 7/8 in. ______________mm
c. 0.062 in. ____________mm
d. 4.750 in. ____________mm
5. Using a metric ruler, measure this test paper and provide the dimensions in
millimeters: _______________________
6
Copyright © Texas Education Agency, 2012. All rights reserved.
Applying Metrics to Welding Test KEY
1. For the following terms, select those metric expressions which are presented
incorrectly and revise them so they are correct. If correct, leave blank.
a. 4 ¾ mm 4.75 mm
b. 0.10 mm
c. 18.67 Mm 18.67 mm
d. 16 ½ mms. 16.5 mm
e. 12,750 mm 12750 mm
f. 0.7 millimeters 0.7 mm
2. What is the metric equivalent conversion for:
a. Thousandths--- milli
b. Tenths— deci
c. Hundreds— hecto
3. Fill in the missing information
Quantity
Length
Mass
Time
Electric Current
Temperature
Amount of substance
Luminous intensity
Name
meter
kilogram
second
ampere
Kelvin(Celsius)
mole
candela
Symbol
m
kg
s
A
K(C)
m
cd
4. Convert the following to metric values:
a. 9/16 in. 14.2875 mm
b. 7/8 in. 22.2250 mm
c. 0.062 in. 1.5875 mm
d. 4.750 in. 120.65 mm
5. Using a metric ruler, measure this test paper and provide the dimensions in
Millimeters_________________________________________
7
Copyright © Texas Education Agency, 2012. All rights reserved.