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iRubric: Dichototomous Key (Taxonomy) rubric

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Dichototomous Key (Taxonomy) Taxonomy Project Task: Students make a dichotomous diagram and key of their chosen theme. Themes were based on students' interests. In addition, students had the lewey to choose which dichotomous key level (middle school level or high school level) they wanted to do after considering the degree of difficulty and teacher suggestions. Rubric Code: V57XW9 By gsangawa Ready to use Public Rubric Subject: Science Type: ePortfolio Grade Levels: 6-8, 9-12

Button Classification
	1 pts	2 pts	3 pts	4 pts
Characteristics	1 Characteristics of the members of the group are not well described nor defined either in words or in pictures. The student repeated keys for the subsequent groupings.	2 Characteristics of the members of the group are well described and defined either in words or in pictures. The student explored very few characteristics or traits.	3 Characteristics of of the members of the group are mostly well described and defined in pictures. The student explored many observable characteristics or traits.	4 Characteristics of the members of the group are well described and defined in pictures. The student explored a variety of observable characteristics or traits.
Branching and key	1 Trait or traits for dividing members of the group into two groups is clearly described or defined in words or pictures. Key does not work.	2 Trait or traits for dividing members of the group into two groups is clearly described or defined in words or pictures. Key is unclear.	3 Trait or traits for dividing members of the group into two groups and all subsequent groups are not clearly described or defined in words or pictures; workable key.	4 Trait or traits for dividing members of the group into two groups and all subsequent groups are clearly described or defined in words or pictures; concise, workable key.
Presentation and mechanics	1 Dichotomous diagram is neither clear, nor neat nor well laid out on the page. It is hard to understand the diagram. There are spelling and grammatical errors.	2 Most branches of the dichotomous diagram are unclear, or messy or not well laid out on the page, making it hard to understand. There are errors in grammar and spelling.	3 Dichotomous diagram is mostly clear, neat well laid out on the page so that it does not interfere with understanding. There are no errors in spelling or grammar.	4 Dichotomous diagram is clear, neat, and well laid out on the page. There are no spelling or grammar mistakes.