SuccessLink Missouri Department of Elementary & Secondary Education Friday, July 30, 2010

Great Teaching Ideas

lesson & unit viewer

Traditional & Computer Orthographic Projection

published on: 1/27/2005

Contributing Teacher(s): Tim Helvey

Subject Area: Technology Use/N/A

Grade Range: High School (9-12)

Materials Needed:

Traditional Drawing Portion
Standard drawing board or smooth desktop
24" T-square
10" 45 degree triangle
10" 30/60 degree triangle
Erasure shield
Paper/pencil

CAD Drawing Portion

AutoCAD LT software
PC that will run AutoCAD LT
Class set of computer disks
Printer

Objective: See each lesson.

Process Standards:

Goal 2.5 perform or produce works in the fine and practical arts
Goal 2.7 use technological tools to exchange information and ideas

Content Standards:

Fine Arts 1. Process and techniques for the production, exhibition or performance of one or more of the visual ...
Mathematics 2. Geometric and spatial sense involving measurement (including length, area, volume), trigonometry, ...

Time Allowance: 3 days per drawing (see comments)

Description: A progressive unit to integrate the use of traditional and computerized drafting practices in the domain of Orthographic Projections.

Comments: I expect students to abide by a three day per drawing time limit. This is the same whether the drawing is a traditional drawing or the Auto CAD LT version. The three day deadline allows the instructor to work with any special needs students. The gifted/advanced students may use the extra time to design their own project or help peer tutor other students. No matter the situation the same scoring guide can be utilized.

Classroom Component: A progressive unit (four lessons) that prepares instructor and student to integrate the use of traditional and computerized drafting practices in the domain of Orthographic Projections. Projection 1
TRADITIONAL & COMPUTER ORTHOGRAPHIC
OBJECTIVE: The student will be able to complete a traditional orthographic projection and a computer generated orthographic projection utilizing standard drafting practices and procedures.

GOAL: THE STUDENT WILL DESIGN AND ANALYZE PROJECTS. OBJ. 2.* Construct traditional orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

OBJ. 3.* Construct computer orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

TRADITIONAL CONTENT:
What is an orthographic drawing.
What are orthographic drawings used for.
STEPS IN DRAWING AN ORTHOGRAPHIC PROJECTION HANDOUT 4-1.
Go through steps with the overhead and TRANSPARENCIES
Student models transparencies and discusses each step.
Closure

COMPUTER CONTENT:

Open "TTLBXXXX.DWG
Erase all INTERIOR COMPONENTS.
Save AS "CORT1XXX"
Update Title Box information to include:
- ORTHO PROJECTION 1
- DATE XX-XX-98 (MUST RECALCULATE SNAP)
Draw a HORIZONTAL LINE that is 1" away from the title box bottom.
Draw a HORIZONTAL LINE that is 1 3/4" away from the first horizontal line.
Draw a VERTICAL LINE that is 1" away from the left side of the title box.
Draw a VERTICAL LINE that is 3 1/2" away from the first vertical line.
Draw MITER LINE from intersection of FRONT view for 6" at 45 degrees.
Draw a VERTICAL LINE that is 2" away from the right side of the front view.
Draw a VERTICAL LINE that is 3/4" away from the last vertical line.
PROJECT the INTERSECTION of the miter and the last two vertical lines.
Draw FRONT view so that their is STEPS coming up from the right side. Steps are to be 1/4" X 1/4".
PROJECT the STEPS from the FRONT view OVER to the SIDE view.
PROJECT the STEPS from the FRONT view UP to the TOP view.
TRIM OFF the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. {ENTER F for first point.}
DIMENSION overall length and overall width in the TOP view.
DIMENSION HORIZONTAL STEPS in the FRONT view.
Dimension overall height in the FRONT view.
DIMENSION FIRST VERTICAL STEPS on the LEFT of the SIDE view.
EXPLODE this dimension.
DIMENSION REMAINING VERTICAL STEPS on the RIGHT of the SIDE view.
Add extension line to the 1.25 so that it matches the remaining arrow heads.
MOVE the ENTIRE drawing so that will be 1/2" from the left side of the title box and 1 inch from the bottom.
Save as "CORT1XXX"
Print as instructed previously. Remember to utilize the following:
- Print/Plot Setup Default and Landscape feature,
- Preview Full
- Correct paper Size (11 X 8.5)
- Rotation and Origin

ASSIGNMENT:

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE

GOAL: THE STUDENT WILL DESIGN AND ANALYZE PROJECTS. OBJ. 2.* Construct traditional orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

HIGHEST STANDARD: (20)

The student will consistently utilize the T-square for all horizontal lines.
The student will properly use both triangles for all angles that are divisible by 15 degrees.
The student will demonstrate proper use of the scale with accuracy to a 1/16 and quickly (without counting marks).
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
The student will construct a drawing that is very neat and clean.
The student will demonstrate the ability to constantly draw lines that are on top of each other. ex. tracing the drawing a second time.
The student will strive to treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is exemplary.

SATISFACTORY: (15)

The student will know how to properly utilize the T-square for horizontal lines.
The student will properly use both triangles for angles of 30 degree increments.
The student will be able to accurately measure with the scale.
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and/or dimension lines/gap, line weight.
The student will construct a drawing that is semi-neat and clean.
The student will demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with an error or two due to lack of concentration.
The student will treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is average.

UNSATISFACTORILY: (7)

The student DOES NOT demonstrate proper use of the T-square for horizontal lines and/or needs "reminders".
The student DOES NOT use both triangles in conjunction with the T-square.
The student CAN NOT demonstrate proper use of the scale.
The student DOES NOT utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
The student will construct a drawing that IS NOT neat and/or clean.
The student DOES NOT demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with numerous errors due inaccurate or trying to rush work.
The student DOES NOT treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting IS NOT conducive to the learning environment.

TOTAL POINTS OUT OF 160: ________/160

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 1

Student's orthographic projection will be graded Computer Orthographic Projection Rubric.

GOAL: THE STUDENT WILL DESIGN AND ANALYZE PROJECTS. OBJ. 3.* Construct computer orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

		High	Moderate	Low
Title box manipulation	(10)	10	7	4
Drawing the objects	(20)	20	14	8
Projection of lines	(20)	20	14	8
Overall dimensions	(10)	10	7	4
Internal dimensions	(10)	10	7	4
Trimming and breaking	(15)	15	11	6
Moving objects	(5)	5	3	2
Saving	(5)	5	3	2
Lab participation	(5)	5	3	2
Printing	(10)	10	7	4

TOTAL POINTS OUT OF 110:_________________/110

Projection 2

TRADITIONAL & COMPUTER ORTHOGRAPHIC PROJECTION

OBJECTIVE: The student will be able to complete a traditional orthographic projection and a computer generated orthographic projection utilizing standard drafting practices and procedures.

GOAL: THE STUDENT WILL DESIGN AND ANALYZE PROJECTS. OBJ. 2.* Construct traditional orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

OBJ. 3.* Construct computer orthographic drawings 1, 2 3. Produce Orthographic Projections 1, 2 3 to be graded by Project Scoring Guides (attached). SHOW ME STANDARDS 2.5, 2.7, MA 2, FA 1, Level 5

TRADITIONAL CONTENT:

What is an orthographic drawing.
What are orthographic drawings used for.
STEPS IN DRAWING AN ORTHOGRAPHIC PROJECTION HANDOUT 4-1.
Go through steps with the overhead and TRANSPARENCIES
Student models transparencies and discusses each step.
Closure

COMPUTER CONTENT:

Open "CORXXX.DWG"
Erase all INTERIOR COMPONENTS.
Save as "CORT2XXX"
Update Title Box information to include:
- ORTHOGRAPHIC PROJECTION 2
- DATE XX-XX-XX (MUST RECALCULATE SNAP)
Draw a HORIZONTAL LINE 1" away from the title box bottom.
Draw a HORIZONTAL LINE that is 2" away from the first horizontal line.
Draw a VERTICAL LINE that is 1" away from the left side of the title box.
Draw a VERTICAL LINE that is 2 5/8" away from the first vertical line.
Draw a MITER LINE from intersection of FRONT view for 6" at 45 degrees.
Draw a VERTICAL line that is 2" away from the right side of the FRONT view.
Draw a VERTICAL line that is 1 3/8" away from the last vertical line.
PROJECT the INTERSECTION of the miter and the last two vertical lines.
Use the MEASURE command to verify the correct overall dimensions. (2 5/8" X 1 3/8" X 2") {L X W X H}
TRIM off the extending lines that are not needed.
CENTER a MILLED STEP SLOT in the FRONT view. The dimensions are to be a total of 1 5/8" X 1/2" with 1/4" steps on EACH side.
PROJECT the SLOT INTERSECTIONS from the FRONT view over to the side view.
TRIM OFF the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. (Enter F for first point.)
At the command prompt type in LT; then ENTER type in L; then ENTER type in HIDDEN; then ENTER click on OK
At the command prompt type in LT; then ENTER type in L; then ENTER type in HIDDEN2; then ENTER click on OK
PROJECT the SLOT INTERSECTIONS from the FRONT view up to the top view.
TRIM OFF the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. (Enter F for first point.)
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click on all 4). LINETYPE/HIDDEN2/OK/OK
Draw a chamfer on the top left corner of the FRONT view that is 0.625" X 0.625". (USE CONSTRUCTION/INTERSECTING LINE METHOD)
TRIM FRONT view so that the new shape is revealed. Most likely two lines in the FRONT view will have to be trimmed.
PROJECT the CHAMFER from the FRONT view up to the TOP view.
TRIM OFF the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. (Enter F for first point.)
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click on 1). LINETYPE/HIDDEN2/OK/OK
PROJECT the SLOT INTERSECTIONS AND CHAMFER from the FRONT view over to the side view.
TRIM OFF the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. (Enter F for first point.)
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click on all 3). LINETYPE/HIDDEN2/OK/OK
DIMENSION FRONT view as indicated on blueprint. (Remember to utilize SNAP, EXPLODE ETC. if necessary.)
DIMENSION SIDE view as indicated on blueprint. (Remember to utilize SNAP, EXPLODE ETC. if necessary.)
DIMENSION TOP view as indicated on blueprint. (Remember to utilize SNAP, EXPLODE ETC. if necessary.)
MOVE the ENTIRE drawing so that will be 2" from the left side of the title box and 1 3/8" inch from the bottom.
Save as "CORT2XXX"
Print as instructed previously. Remember to utilize the following:
- Print/Plot Setup Default and Landscape feature,
- Preview Full
- Correct paper Size (11 X 8.5)
- Rotation and Origin

ASSIGNMENT:

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 2

HIGHEST STANDARD: (20)

The student will consistently utilize the T-square for all horizontal lines.
The student will properly use both triangles for all angles that are divisible by 15 degrees.
The student will demonstrate proper use of the scale with accuracy to a 1/16 and quickly (without counting marks).
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines are exemplary.
The student will construct a drawing that is very neat and clean.
The student will demonstrate the ability to constantly draw lines that are on top of each other. ex. tracing the drawing a second time.
The student will strive to treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is exemplary.

SATISFACTORY: (15)

The student will know how to properly utilize the T-square for horizontal lines.
The student will properly use both triangles for angles of 30 degree increments.
The student will be able to accurately measure with the scale.
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and/or dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is correct but not perfected.
The student will construct a drawing that is semi-neat and clean.
The student will demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with an error or two due to lack of concentration.
The student will treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is average.

UNSATISFACTORILY: (7)

The student DOES NOT demonstrate proper use of the T-square for horizontal lines and/or needs "reminders".
The student DOES NOT use both triangles in conjunction with the T-square.
The student CAN NOT demonstrate proper use of the scale.
The student DOES NOT utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is NOT correct.
The student will construct a drawing that IS NOT neat and/or clean.
The student DOES NOT demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with numerous errors due inaccurate or trying to rush work.
The student DOES NOT treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting IS NOT conducive to the learning environment.

TOTAL POINTS OUT OF 180: ________/180

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 2

Student's orthographic projection will be graded Computer Orthographic Projection 2 Rubric.

		High	Moderate	Low
Title box manipulation	(10)	10	7	4
Drawing the objects	(20)	20	14	8
Projection of lines	(20)	20	14	8
Alteration of lines	(10)	10	7	4
Overall dimensions	(10)	10	7	4
Internal dimensions	(10)	10	7	4
Trimming and breaking	(15)	15	11	6
Moving objects	(5)	5	3	2
Saving/Printing	(5)	5	3	2
Lab participation	(5)	5	3	2
Printing	(10)	10	7	4

TOTAL POINTS OUT OF 120: ________/120

Projection 3

TRADITIONAL & COMPUTER ORTHOGRAPHIC PROJECTION

OBJECTIVE: The student will be able to complete a traditional orthographic projection and a computer generated orthographic projection utilizing standard drafting practices and procedures. NEWLY INCLUDED ITEMS ARE: CIRCLES, CENTER LINES, HIDDEN LINES.

TRADITIONAL CONTENT:

What is an orthographic drawing.
What are orthographic drawings used for.
STEPS IN DRAWING AN ORTHOGRAPHIC PROJECTION HANDOUT 4-1.
Go through steps with the overhead and TRANSPARENCIES
Student models transparencies and discusses each step.
Closure

COMPUTER CONTENT:

Open "CORT2XXX.DWG"
Erase all INTERIOR COMPONENTS.
Save as "CORT3XXX"
Update Title Box information to include:
- ORTHO PROJECTION 3
- DATE XX-XX-XX (MUST RECALCULATE SNAP)
Draw a HORIZONTAL LINE 1" away from the title box bottom.
Draw a HORIZONTAL LINE that is 1 7/8" away from the first horizontal line.
Draw a HORIZONTAL LINE that is 1" away from the TOP of the FRONT view.
Draw a HORIZONTAL LINE that is 3" away from the last horizontal line.
Draw a HORIZONTAL LINE that is 1 1/2" DOWN from the TOP of the FRONT view.
Draw a HORIZONTAL LINE that is 5/8" UP from the last horizontal line
Draw a VERTICAL LINE that is 1" away from the left side of the title box.
Draw a VERTICAL LINE that is 6" away from the first vertical line.
Use the MEASURE command to verify the correct overall dimensions. (6" X 1 7/8" X 3") {L X W X H}
TRIM off the extending lines that are not needed.
BREAK OUT the lines between the views utilizing the BREAK command. (Enter F for first point.)
Draw a VERTICAL line that is 3/4" away from the left side of the FRONT view.
TRIM OFF the extending lines that are not needed.
Draw a VERTICAL line that is 3 7/8" away from the left side of the FRONT view; this is to be turned into a CENTER line in a few steps. This line should stick out from the object approximately 1/4".
At the command prompt type in LT; then ENTER type in L; then ENTER type in CENTER; then ENTER click on OK control C
At the command prompt type in LT; then ENTER type in L; then ENTER type in CENTER2; then ENTER click on OK control C
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the line that you just drew. Make it look line the example in the picture CENTER.
Draw TWO VERTICAL lines the are 1 1/8" AWAY from the center line.
TRIM OFF the extending lines that are not needed to reveal the FRONT view.
Draw TWO VERTICAL lines the are 5/8" AWAY from the center line.
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture HIDDEN2.
Draw a VERTICAL line that is 1 1/4" away from the left side of the FRONT view; this is to be turned into a center line. This line should stick out from the object approximately 1/4".
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture CENTER2.
Draw TWO VERTICAL lines the are 3/16" AWAY from the center line.
PROJECT the bottom LIP of the FRONT view to the TOP view.
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the line that you just drew. Make it look line the example in the picture HIDDEN2.
BREAK OUT the HIDDEN2 lines between the views utilizing the BREAK command. (Enter F for first point.)
PROJECT the bottom 3/8" DIAMETER CENTER LINE of the FRONT view to the TOP view.
BREAK OUT the HIDDEN2 lines between the views utilizing the BREAK command. (Enter F for first point.)
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture CENTER2.
PROJECT the bottom 1 1/4" DIAMETER CENTER LINE of the FRONT view to the TOP view.
BREAK OUT the HIDDEN2 lines between the views utilizing the BREAK command. (Enter F for first point.)
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture CENTER.
Draw the HORIZONTAL line in the TOP view.
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture CENTER.
Draw the TWO LONG CENTER2 lines, for the small holes, in the TOP view.
Draw the TWO circles in the TOP view by UTILIZING the CIRCLE/INTERSECTION command
Erase the two 3/16" VERTICAL lines in the FRONT view.
PROJECT two VERTICAL (circle) lines DOWN from the TOP view to the BOTTOM view.
TRIM OFF ONLY THE BOTTOM EXTENDING LINES (if needed).
MODIFY/CHANGE PROPERTIES/ SELECT OBJECTS (click the lines that you just drew. Make it look line the example in the picture HIDDEN2.
BREAK OUT the lines between the views utilizing the BREAK command
Save as "CORT3XXX"
DIMENSION TOP view as indicated on blueprint. (Remember to utilize SNAP, EXPLODE ETC. if necessary.)
MOVE TOP view so that it is 1" DOWN from the TOP of the title box AND 1 3/8" from the LEFT side.
DIMENSION FRONT view as indicated on blueprint. (Remember to utilize SNAP, EXPLODE ETC. if necessary.)
MOVE FRONT so that it is 3/4" UP from the BOTTOM of the title box and 1 3/8" from the LEFT side.
Save as "CORT3XXX"
Print as instructed previously. Remember to utilize the following:
- Print/Plot Setup Default and Landscape feature,
- Preview Full
- Correct paper Size (11 X 8.5)
- Rotation and Origin

ASSIGNMENT:

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 3

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION RUBRIC:

HIGHEST STANDARD: (20)

The student will consistently utilize the T-square for all horizontal lines.
The student will properly use both triangles for all angles that are divisible by 15 degrees.
The student will demonstrate proper use of the scale with accuracy to a 1/16 and quickly (without counting marks).
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines are exemplary.
Drawing of circles is exemplary.
The student will construct a drawing that is very neat and clean.
The student will demonstrate the ability to constantly draw lines that are on top of each other. ex. tracing the drawing a second time.
The student will strive to treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is exemplary.

SATISFACTORY: (15)

The student will know how to properly utilize the T-square for horizontal lines.
The student will properly use both triangles for angles of 30 degree increments.
The student will be able to accurately measure with the scale.
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and/or dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is correct but not perfected.
Drawing of circles is correct but not perfected.
The student will construct a drawing that is semi-neat and clean.
The student will demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with an error or two due to lack of concentration.
The student will treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is average.

UNSATISFACTORILY: (7)

The student DOES NOT demonstrate proper use of the T-square for horizontal lines and/or needs "reminders".
The student DOES NOT use both triangles in conjunction with the T-square.
The student CAN NOT demonstrate proper use of the scale.
The student DOES NOT utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is NOT correct.
Drawing of circles is NOT correct.
The student will construct a drawing that IS NOT neat and/or clean.
The student DOES NOT demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with numerous errors due inaccurate or trying to rush work.
The student DOES NOT treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting IS NOT conducive to the learning environment.

TOTAL POINTS OUT OF 200: ________/200

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 3

		High	Moderate	Low
Title box manipulation	(10)	10	7	4
Drawing the objects	(20)	20	14	8
Projection of lines	(20)	20	14	8
Alteration of lines	(10)	10	7	4
Drawing of Circles	(10)	10	7	4
Overall dimensions	(10)	10	7	4
Internal dimensions	(10)	10	7	4
Trimming and breaking	(15)	15	11	6
Moving objects	(5)	5	3	2
Saving	(5)	5	3	2
Lab participation	(5)	5	3	2
Printing	(10)	10	7	4

TOTAL POINTS OUT OF 130: ________/130

Projection 4

TRADITIONAL & COMPUTER ORTHOGRAPHIC PROJECTION

OBJECTIVE: The student will be able to complete a traditional orthographic projection and a computer generated orthographic projection utilizing standard drafting practices and procedures.

TRADITIONAL CONTENT:

What is an orthographic drawing.
What are orthographic drawings used for.
STEPS IN DRAWING AN ORTHOGRAPHIC PROJECTION HANDOUT 4-1.
Go through steps with the overhead and TRANSPARENCIES
Student models transparencies and discusses each step.
Closure

COMPUTER CONTENT:

Open "CORT3.DWG"
Erase all INTERIOR COMPONENTS.
Save AS "CORT4XXX"
Update Title Box information to include:
- ORTHO PROJECTION 4
- DATE XX-XX-00 (MUST RECALCULATE SNAP)
SETTINGS/UNITS to FRACTIONAL; PRECISION to 1/128th inch.
Set Snap to 1/64.
Set Line Type scale to 0.5 inch by going to (Settings/Linetype/Ltscale).
New dimension type "Radial".
Calculate the OVERALL SIZE of the FRONT view. FRONT LENGTH _____ X FRONT HEIGHT _____
Calculate the OVERALL SIZE of the RIGHT view. RIGHT DEPTH _____ X RIGHT HEIGHT _____
Calculate the OVERALL SIZE of the TOP view. TOP LENGTH _____ X TOP DEPTH _____
BE SURE TO DO 5-12 then Save AS "CORT4XXX"
MOVE the ENTIRE drawing so that will be 1" from the left side of the title box and 1 inch from the bottom.
Save as "CORT4XXX"
You need to verify that you have the following layers and corresponding line types; before you proceed. (Any deviation will result in a serious loss of points.) 0 Layer = Continuos line Center Layer = Center and Center2 lines Dimension Layer = Continuos line Hidden Layer = Hidden and Hidden2 lines Hatch Layer = Ansi 131 Text Layer = Freeze and Lock (empty for now)
Construct EACH PAGE as identified on the example pages that follow.
You will print EACH layer that is stated in # 13 AND STAPLE IN THE SAME ORDER with the attached grade sheet.
Print as instructed previously. Remember to utilize the following:
- Print/Plot Setup Default and Landscape feature,
- Preview Full
- Correct paper Size (11 X 8.5)
- Rotation and Origin

ASSIGNMENT:

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 4

HIGHEST STANDARD: (20)

The student will consistently utilize the T-square for all horizontal lines.
The student will properly use both triangles for all angles that are divisible by 15 degrees.
The student will demonstrate proper use of the scale with accuracy to a 1/16 and quickly (without counting marks).
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines are exemplary.
Drawing of circles is exemplary.
The student will construct a drawing that is very neat and clean.
The student will demonstrate the ability to constantly draw lines that are on top of each other. ex. tracing the drawing a second time.
The student will strive to treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is exemplary.

SATISFACTORY: (15)

The student will know how to properly utilize the T-square for horizontal lines.
The student will properly use both triangles for angles of 30 degree increments.
The student will be able to accurately measure with the scale.
The student will utilize correct protocol in regard to dimensioning: extension lines/gap and/or dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is correct but not perfected.
Drawing of circles is correct but not perfected.
The student will construct a drawing that is semi-neat and clean.
The student will demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with an error or two due to lack of concentration.
The student will treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting is average.

UNSATISFACTORILY: (7)

The student DOES NOT demonstrate proper use of the T-square for horizontal lines and/or needs "reminders".
The student DOES NOT use both triangles in conjunction with the T-square.
The student CAN NOT demonstrate proper use of the scale.
The student DOES NOT utilize correct protocol in regard to dimensioning: extension lines/gap and dimension lines/gap, line weight.
Drawing/projection of HIDDEN and CENTER lines is NOT correct.
Drawing of circles is NOT correct.
The student will construct a drawing that IS NOT neat and/or clean.
The student DOES NOT demonstrate the ability to draw lines that are on top of each other. ex. tracing the drawing a second time with numerous errors due inaccurate or trying to rush work.
The student DOES NOT treat the drafting equipment the way that it was intended to be used; delicately and respectfully.
The student participation in the laboratory setting IS NOT conducive to the learning environment.

TOTAL POINTS OUT OF 200: ________/200

Date:_________________________

Student Name:_________________________________________

TRADITIONAL ORTHOGRAPHIC PROJECTION SCORING GUIDE 4

COMPUTER ASSESSMENT: Student's orthographic projection will be graded Computer Orthographic Projection Rubric.

		High	Moderate	Low
Title box manipulation	(5)	5	4	24
Drawing the objects	(20)	20	14	8
Projection of lines	(20)	20	14	8
Alteration of lines	(20)	20	14	8
Section/Hatch Lines	(20)	20	14	8
Layers	(20)	20	14	8
Overall dimensions	(10)	10	7	4
Internal dimensions	(20)	20	14	8
Trimming and breaking	(15)	15	11	6
Moving objects	(5)	5	3	2
Saving	(5)	5	3	2
Lab participation	(5)	5	3	2
Printing	(10)	10	7	4

TOTAL POINTS OUT OF 175: ________/175

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For additional information contact :
Tim Helvey
Hancock Sr. High
Hancock Place
(314) 544-1200