iRubric: Sink or Float ~ Estimating Density of Objects rubric

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Sink or Float ~ Estimating Density of Objects

Density Bottle

Students will estimate unknown density of assorted objects based on known density of different layered liquids.

Rubric Code: RX67X87

By mrsWood5th

Ready to use

Public Rubric

Subject: Science

Type: Project

Grade Levels: 6-8

Sink or Float ~ Density
	Excellent 5 pts	Good 4 pts	Fair 3 pts	Poor 1 pts
'Let's Test It Out' Diagram	Excellent The diagram is neat, complete and labeled.	Good The diagram is completed, but hard to read.	Fair The diagram is incomplete and hard to read.	Poor The diagram is missing.
Number of Layers	Excellent Student has 6 separate liquid layers identified and labeled prediction & actual. Measurements are identified. All 4 "Let's Test It Out" worksheet questions are answered.	Good Student has 6 separate liquid layers identified and labeled prediction & actual. Some measurements are identified. Some of the "Let's Test It Out" worksheet questions are answered.	Fair Student has separate liquid layers identified and labeled prediction & actual. No measurements are identified. Some of the "Let's Test It Out" worksheet questions are answered.	Poor Student has separate liquid layers identified, but incomplete. No measurements are identified. "Let's Test It Out" worksheet questions are not answered.
Number of Objects	Excellent Student has floated all six objects on the layers in the container. Estimated measurements are identified.	Good Student has floated at least four objects on the layers in the container. Estimated measurements are identified.	Fair Student has floated less than four objects on the layers in the container. Some estimated measurements are identified.	Poor Student has floated less than two objects on the layers in the container. Estimated measurements are missing.
Hypothesis	Excellent Hypothesis for for projected object buoyancy included, clear and concise. Student includes clear understanding of the reasoning behind scientific concepts of density and buoyancy.	Good Hypothesis for for projected object buoyancy is included and somewhat clear. Student includes some understanding of the scientific concepts behind buoyancy.	Fair Hypothesis for for projected object buoyancy is incomplete and hard to read. Student is starting to make a connection to buoyancy and density.	Poor Hypothesis for projected object buoyancy is missing. Student does not make any connection between buoyancy and density.
Summary	Excellent The summary is neatly written and addresses each item in the bottle and compares each one to another item that was included.	Good The summary is neatly written and addresses each item in the bottle and compares several of the objects to each other.	Fair The summary is neatly written and addresses each item in the bottle.	Poor The summary is not neatly written or does not demonstrate understanding of the scientific concepts.
Collaboration	Excellent Collaborative, worked well with lab partners. Good use of time.	Good Collaborative and worked well with others. Slight behavior modifications necessary, but not disruptive to other groups.	Fair Somewhat collaborative. Allowed others to take the lead. Behavior addressed, but improved.	Poor Student did not work well with lab partners. Did not take lab seriously. Mishandling of materials. Asked to leave.

Subjects:

Science

Types:

Project

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