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iRubric: Bridge Design Challenge rubric

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Bridge Design Challenge Rubric Code: A24X95A By Craiger10 Ready to use Public Rubric Subject: Science Type: Assessment Grade Levels: K-5, 6-8

Bridge Design Challenge
	1 (N/A)	2 (N/A)	3 (N/A)	4 (N/A)
Strength (Live Load)	1 The bridge is not structurally sound and can only hold between 0 and 2 lbs of live load prior to collapsing.	2 The bridge is somewhat structurally sound but can only hold between 2 and 4 lbs of live load prior to collapsing.	3 The bridge is structurally sound and can hold between 4 and 5 lbs of live load.	4 The bridge is obviously very structurally sound and can hold 5 lbs or more of live load.
Wind Resistance	1 The bridge is not sturdy and collapses when a fan on high speed is placed 2 feet away.	2 The bridge is somewhat sturdy and has noticeable movement when a fan on high speed is placed 2 feet away.	3 The bridge is sturdy and only moves slightly when a fan on high speed is placed 2 feet away.	4 The bridge is very sturdy and does not move even when a fan on high speed is placed 2 feet away.
Design	1 The bridge span is less than 15cm and is minimally constructed of geometric shapes, which are not placed in logical and symmetrical positions.	2 The bridge span is 15-25cm and is somewhat constructed of geometric shapes, although they may not be placed in logical and symmetrical positions.	3 The bridge span is 25-30cm and is mostly constructed of geometric shapes placed in logical and symmetrical positions.	4 The bridge span is a minimum of 30cm and is constructed of geometric shapes placed in logical and symmetrical positions.
Visual Appeal	1 The bridge is not visually appealing. Limited time and effort has been put into the planning and execution of the completed bridge, and there is no unity across the overall design.	2 The bridge is somewhat visually appealing. Some time and effort has been put into the planning and execution of the completed bridge, although there are parts that appear to not match the overall design.	3 The bridge is visual appealing. Time and effort has been put in to the planning and execution of the completed bridge.	4 The bridge is very visual appealing. Time and effort has clearly been put in to the planning and execution of the completed bridge.