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iRubric: Paper Bridge rubric

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Paper Bridge Paper Bridge Students are to work alone or in teams and build an 8 cm wide paper bridge that is cost effective, spans a gap of 20 cm and holds a as many pennies as possible before collapsing. Rubric Code: UX57787 By philipp_bode Ready to use Public Rubric Subject: Science Type: Project Grade Levels: 6-8

Forces Acting on Structures:
	Level 1 (N/A)	Level 2 (N/A)	Level 3 (N/A)	Level 4 (N/A)
Appearance	Level 1 Work is sloppy throughout. Design is unattractive and/or plain.	Level 2 Design and use of tape is messy at times. Some visual appeal.	Level 3 Overall, an attractive bridge Tidy work most of the time. Visually appealing.	Level 4 Extremely attractive in design All construction is clean and attractive. Exceptionally visually appealing.
Structure	Level 1 Basic use of beam, arch, truss, corrugation shows limited understanding of structures and forces More than 2 cm short of minimum 20 cm span requirement More than 2 cm narrower than 8 cm width requirement Very poor mass to cost ratio	Level 2 Use of beam, arch, truss, corrugation shows some understanding of structures and forces 1 to 2 cm short of minimum 20 cm span requirement Does not meet 8 cm width requirement 1 to 2 cm narrower than 8 cm width requirement Poor mass to cost ratio	Level 3 Use of beam, arch, truss, corrugation shows good understanding of structures and forces Meets minimum 20 cm span requirement Meets 8 cm width requirement Good mass to cost ratio	Level 4 Use of beam, arch, truss, corrugation shows excellent understanding of structures and forces Exceeds minimum 20 cm span requirement Exceeds 8 cm width requirement Excellent mass to cost ratio
Mass Held	Level 1 Supported less than 50% of the average mass that caused collapse	Level 2 Supported 51% to 75% of average mass that caused collapse	Level 3 Supported 76% to 100% of average mass that caused collapse	Level 4 Supported greater than 100% of average mass that caused collapse
Blueprint	Level 1 Did not show design of bridge Planned use of truss, beam, arch, corrugation was not illustrated	Level 2 Did not accurately show design of bridge Planned use of truss, beam, arch, corrugation was illustrated	Level 3 Showed design of bridge Planned use of truss, beam, arch, corrugation was clearly illustrated	Level 4 Accurately showed design of bridge Planned use of truss, beam, arch, corrugation was clearly illustrated to scale