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Classification of Materials
Examples of Student Work

6th-8th Grade Performance Task
Contributed by: The RAND Institute (RAND)
1993-94

Examples from 1994 (7th-8th Grade) Format:

 

Example 1: 4 boxes missing row and inside labels, fur misclassified

Column = 7 Row = 0 Boxes = 1 Inside = 0 Outside = 1 System = 0

 

Example 2: fur in right row, but wrong column; 1 property and all 4 inside missing

Column = 7 Row = 8 Boxes = 1 Inside = 0 Outside = 3 System = 4-3=1

 

Example 3: shell misclassified, no inside labels

Column = 8 Row = 7 Boxes = 1 Inside = 0 Outside = 4 System = 4-3=1

 

Example 4: sand and rock missing, no inside labels, row property does not fit its groups

Column = 6 Row = 6 Boxes = 1 Inside = 0 Outside = 3 System = 4

 

Example 5: 1 empty box, no inside labels, property labels do not match group

Column = 6 Row = 6 Boxes = 0 Inside = 0 Outside = 2 System = 4

 

Example 6: No outside labels, 2 misclassified materials

Column = 6 Row = 6 Boxes = 1 Inside = 4 Outside = 0 System = 4-2=2

 

Example 7: Living/dead and "sea animals" get points

Column = 5 Row = 6 Boxes = 1 Inside = 1 Outside = 1 System = 0

Example 8: -2 for inside not matching outside

Column = 8 Row = 7 Boxes = 1 Inside = 0 Outside = 1 System = 4-2=2

 

Previous Student Work

 

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