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iRubric: Balsa Bridge rubric

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Balsa Bridge 
Balsa Bridge
Students build a Bridgefrom balsa sticks iwthin specifications and then test them.
Rubric Code: QAWWAB
By clipori
Ready to use
Public Rubric
Subject: Arts and Design  
Type: Project  
Grade Levels: 9-12

Powered by iRubric Balsa Bridge
  Poor ( Retraining needed)

2 pts

Poor (Trainee)

4 pts

Fair(Apprentice)

6 pts

Good (Journeyman)

8 pts

Excellent (Foreman)

10 pts

Plan

Poor ( Retraining needed)

No real plan,no specs.
no attention to detail at all
Poor (Trainee)

Plan does not show specifications clearly and is messy.
Fair(Apprentice)

Plan is neat but is not drawn to given specifications.
Good (Journeyman)

Plan could be neater but is drawn to given specifications.
Excellent (Foreman)

Plan is neat with correct specifications and according to given specifications.
Specifications

Poor ( Retraining needed)

lamination more than two thick

Length, Width and height are larger than 30mm specs.
Poor (Trainee)

Length, width and height are within 20 mm than ideal specs.
no laminations more than two thick
Fair(Apprentice)

length, width and height are within 12mm than ideal specs.
no laminations more than two thick
Good (Journeyman)

length, width and height are within 6mm than ideal specs.
no laminations more than two thick.
Excellent (Foreman)

(A) Bridge is within 3 mm of required length and width. (B) Bridge is less than 100 mm tall. (C) no laminations more than two thick
Structural Connections

Poor ( Retraining needed)

bridge not completed
Poor (Trainee)

Few structural connections are precise.
Fair(Apprentice)

Some structural connections are precise.
Good (Journeyman)

Many structural connections are precise.
Excellent (Foreman)

All structural connections are precise.
Construction Materials

Poor ( Retraining needed)

safety rules broken.

Usually off task.

very little cleaning up
Poor (Trainee)

Materials were used inappropriately. The design was not completed as drawn.

Safety rules followed

Off task or out of area
Messy area
Fair(Apprentice)

Material usage was insufficient to create the intended design.
Glue usage was excessive in several places.
Safety rules followed. Off task or out of area often
Messy area
Good (Journeyman)

All materials were used correctly.
Glue use was excessive in several areas.

Safety rules followed
On task most of the time
Area usually clean
Excellent (Foreman)

All materials were used correctly.
Glue usage is reasonable.
safety followed.

On task always
Clean Area
Construction Quality

Poor ( Retraining needed)

no regard for quality at all. thrown together
Poor (Trainee)

Construction appears careless or haphazard. Many details need refinement for a strong or attractive product. modifications were made with no note, seems as though modifications were made for less effort.
Fair(Apprentice)

Construction accurately followed the plans. but 3-4 details could have been refined for a more attractive product.
Modifications made. No mention in reflection. Possible cause is lack of effort.
Good (Journeyman)

Construction was careful and accurate for the most part, but 1-2 details could have been refined for a more attractive product.
if modifications were made there is somemention in their reflection.
Excellent (Foreman)

Great care taken in the construction process si that the structure is neat, attractive, and follows plans accurately. If modifications were made they have in their conculusions as to why and how it benefited the bridge.
Symmetry of Structure

Poor ( Retraining needed)

Bridge not finished.
Poor (Trainee)

Bridge structure is not symmetrical at all
Fair(Apprentice)

Bridge structure is not very symmetrical.
Good (Journeyman)

Bridge structure is somewhat symmetrical.
Excellent (Foreman)

Bridge structure is symmetrical.
Bridge squareness.

Poor ( Retraining needed)

bridge not finsihed.
Poor (Trainee)

Bridge is not square at all.
Fair(Apprentice)

Bridge is not very square.
Good (Journeyman)

Bridge is somewhat square.
Excellent (Foreman)

Bridge is square.
Function

Poor ( Retraining needed)

unfinished bridge- untestable
Poor (Trainee)

Fatal flaws in function with complete failure under typical stresses.
Fair(Apprentice)

Structure functions pretty well, but deteriorates under typical stresses.
Good (Journeyman)

Structure functions well, holding up under typical stresses.
Excellent (Foreman)

Structure functions extraordinarily well, holding up under atypical stresses.
Calculations

Poor ( Retraining needed)

0- not done
Poor (Trainee)
Fair(Apprentice)

Efficiency figured- Inaccurate. No units
weight writings are inaccurate.
Good (Journeyman)

Efficiency figured- accurate. No units.
Weight units written were accurate. but not listed in units.
Excellent (Foreman)

Efficiency figured with units and is accurate.
Weight listings accurate and math is correct.
strength markings/reflections and c

Poor ( Retraining needed)

not finished.
Poor (Trainee)

Project reflection is general, with little or no specifics or detail.
no markings for weaknesses.
Fair(Apprentice)

Project reflection has some specific details, but is lacking in knowledge growth and/or new strategies learned.
some markings for weaknesses.
Good (Journeyman)

Project reflection has specific details, with some attention to knowledge growth and/or new strategies learned.
had markings on intended weaknesses.
Excellent (Foreman)

Project reflection has specific details, with much attention to knowledge growth and/or new strategies learned.
group marked bridge in areas intended to break.





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