iRubric: Paper Bridge rubric

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Paper Bridge Paper Bridge Students are to work alone or in teams and build a 3 in wide paper bridge and spans a gap of 20 cm and holds a as many pennies as possible before collapsing. Rubric Code: FX88562 By kyliefisher 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. Multiple versions of the same bridge.	Level 4 Extremely attractive in design All construction is clean and attractive. Unique design
Structure	Level 1 Basic use of beam, arch, truss, corrugation shows limited understanding of structures and forces No Design	Level 2 Use of beam, arch, truss, corrugation shows some understanding of structures and forces More than 2 cm short of minimum 20 cm span requirement More than 1 inch narrower than 3 inch width requirement	Level 3 Use of beam, arch, truss, corrugation shows good understanding of structures and forces 1 to 2 cm short of minimum 20 cm span requirement .5 - 1 inch narrower than 3 inch width requirement	Level 4 Use of beam, arch, truss, corrugation shows excellent understanding of structures and forces Meets minimum 20 cm span requirement Meets 3 inch width requirement
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 100% of average mass and still standing