iRubric: Straw Bridge Building rubric

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Straw Bridge Building

All bridges must be made out of straws and tape and spans 25 cm (10 inches) across the gap.

Rubric Code: EXBWA9C

By Stacyjp

Ready to use

Public Rubric

Subject: Science

Type: Project

Grade Levels: 6-8

Forces Acting on Structures: Bridge
	Below Standard (-10 points) (N/A)	Approaching Standard (-4 points) (N/A)	At Standard ( all 4 met = 100%) (N/A)	Above Standard (+2 points) (N/A)
Appearance	Below Standard (-10 points) Not aesthetically pleasing (shapes, patterns, colour, etc.) Work is sloppy throughout. Design is unattractive and/or plain.	Approaching Standard (-4 points) Limited aesthetics (shapes, patterns, color, etc.) Design and use of tape is messy at times. Some visual appeal.	At Standard ( all 4 met = 100%) Overall, an attractive bridge (shapes, patterns, colour, etc.) Tidy work most of the time. Visually appealing.	Above Standard (+2 points) Extremely aesthetic in design (shapes, patterns, colour, etc.) All constuction is clean and attractive Visually appealing.
Structure	Below Standard (-10 points) Bridge with no real design. Does not span a gap of 25 centimeters (unstable or incomplete). Did not maximize use of materials. Design doesn't show triangles. The bridge doesn't hold any weight.	Approaching Standard (-4 points) Bridge with limited creative design. Spans a gap of 25 centimeters, but remains unstable or incomplete in some way. Limited use of materials. Design has few triangles and squares. The bridges hold some weight.	At Standard ( all 4 met = 100%) Bridge designed with good creativity. Spans a gap of 25 centimeters, is complete and stable. Good use of materials. The design has triangles or squares. The bridge holds weight steadily.	Above Standard (+2 points) Bridge designed with excellent creativity. Spans a gap of more than 25 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	Below Standard (-10 points) Partners ..no team work.. one person ran the show! No respect shown.	Approaching Standard (-4 points) Partners ..some team work. Some respect shown.	At Standard ( all 4 met = 100%) Partners were working together, but occasionally distracted from their project in some way. Respect was observed most of the time.	Above Standard (+2 points) Each person was actively involved in the building process. All partners were treated with respect.
Research and blueprint	Below Standard (-10 points) Bridge design does not match the design of the blueprint and changes were not explained. Research was not complete. Sloppy work.	Approaching Standard (-4 points) 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.	At Standard ( all 4 met = 100%) 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.	Above Standard (+2 points) 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
Weight	Below Standard (-10 points) Held little to no weight when tested. Did not match their prediction at all.	Approaching Standard (-4 points) Held 150 grams (pennies)	At Standard ( all 4 met = 100%) Held 300 grams (pennies)	Above Standard (+2 points) Held over 300 grams (pennies), possibly even a human child!

Keywords:

bridge, structures, forces, science

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Project

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