iRubric: Straw Bridge rubric

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Straw Bridge

All bridges must be made out of straws and tape and spans 30 cm across the gap. The bridge has to hold at least 50 pennies

Rubric Code: C22A7C4

By jschexnayder1

Ready to use

Public Rubric

Subject: Science

Type: Project

Grade Levels: 6-8

Forces Acting on Structures: 100 % Straw Bridge
	Level 1 17.5 pts	Level 2 20 pts	Level 3 22.5 pts	Level 4 25 pts
Structure	Level 1 Bridge with no real design. Does not span a gap of 30 centimeters (unstable or incomplete). Did not maximize use of materials. Design doesn't show triangles. The bridge doesn't hold any weight.	Level 2 Bridge with limited creative design.<BR> <BR> Spans a gap of 30 centimeters, but remains unstable or incomplete in some way. Limited use of materials. Design has few triangles and squares. The bridges hold some weight.	Level 3 Bridge designed with good creativity. Spans a gap of 30 centimeters, is complete and stable. Good use of materials. The design has triangles or squares. The bridge holds weight steadily.	Level 4 Bridge designed with excellent creativity. Spans a gap of more than 30 centimeters is complete and stable. Excellent use of materials. The design has triangles and squares. The bridge holds weight for more than 5 minutes.
Teamwork	Level 1 Partners ..no team work.. one person ran the show! No respect shown.	Level 2 Partners ..some team work. Some respect shown.	Level 3 Partners were working together, but occasionally distracted from their project in some way. Respect was observed most of the time.	Level 4 Each person was actively involved in the building process. All partners were treated with respect.
Research and blueprint - sketch - research description - post building reflection	Level 1 Bridge design does not match the design of the blueprint and changes were not explained. Research was not complete. Sloppy work.	Level 2 Bridge design somewhat matches the design of the blueprint. If any changes were made during building, they were explained a little upon reflection. Most of research points are complete. Good work.	Level 3 Bridge blueprint mostly matches the design of the finished product.< If changes were made during building, they were sufficiently explained upon reflection. All research points are complete.3 Bridges are mentioned. Work is neatly done.	Level 4 Bridge blueprint matches the design of the finished product. If any changes were made during building, they were thoroughly explained upon reflection. All research points are complete. 4 bridges kinds are mentioned. Work is neatly done