iRubric: Engineering flow model rubric

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Engineering flow model

Science and Engineering Practices: Develop a model to describe phenomena. **Project focuses on forces of gravity, friction, kinetic and potential energy

Rubric Code: SXA2642

By grade3teacher

Draft

Public Rubric

Subject: Science

Type: Project

Grade Levels: (none)

Marble Run
	Proficient 5 pts	Needs Improvement 3 pts	Warning 1 pts
Design and Plans	Proficient Model should provide an increase in friction to oppose the marble's motion; shallow ramps to slow the downward pull of gravity; and possibly additional ways to slow the marble down, decreasing the marble's inertia.	Needs Improvement Model includes only two ways to slow the marble's motion (either increasing friction or working against the gravitational pull of the Earth).	Warning Model includes only two ways to slow the marble's motion (either increasing friction or working against the gravitational pull of the Earth).
Model	Proficient All the steps work well and object flows easily.	Needs Improvement Most steps work well.	Warning The model did not function smoothly.
TIME	Proficient Projected completed in 25 seconds or more	Needs Improvement Projected completed in 11-24 seconds.	Warning Projected was completed in more that 1-10 seconds