iRubric: Balsa Wood Bridge Construction Project rubric

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Balsa Wood Bridge Construction Project Balsa Wood Bridge Construction Project Students design and build a balsa wood bridge that will hold the most weight and also be the lightest in the class. Rubric Code: HX9X7XX By meksciteach Ready to use Public Rubric Subject: (General) Type: Project Grade Levels: 9-12

Boat project Students are expected to make a boat of styrofoam. accessible and home, materials. The boat must float and carry a four film cannisters filled with dirt.
	Excellent 4 pts	Good 3 pts	Average 2 pts	Fair 1 pts
Sketch 20 pts Students need to draw one sketch	Excellent Sketch was complete and neat.	Good Sketch was missing parts.	Average Sketch was missing parts and was sloppy.	Fair No sketch completed.
Truss bridge 20 pts Make a symmetrical truss bridge	Excellent Bridge is symmetrical.	Good Bridge is somewhat symmetrical.	Average Bridge is not very symmetrical.	Fair Bridge is poor and not symmetrical at all.
Design of bridge 20 pts Final build of bridge	Excellent Design matched original sketch, angles were cut neatly and glue was not overly used.	Good Design was close to original sketch, most angles were cut neatly, and glue was used properly.	Average Design did not match the original sketch, bridge was sloppily built, and glue was everywhere.	Fair Design was never completed.
Strength to weight ratio 20 pts Divide weight held by weight of bridge.	Excellent Strength to weight ratio was between .80 and 1.0. Grade will range from 93-100.	Good Strength to weight ratio was between .79 and .51. Grade will range from 86-92.	Average Strength to weight ratio was between .50 and .25. Grade will range from 76-85.	Fair Strength to weight ratio is lower than .24. Grade will range from 70-75.
Final appearance 20 pts How bridge looks overall.	Excellent Bridge appearance is awesome.	Good Bridge looked pretty good.	Average Bridge was basic and functional.	Fair Bridge was poorly built.