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FORMATIVE ASSESSMENT TASK
Instructions for Implementing the Task
This task can be implemented individually, with small groups, or with the whole class.
 The teacher asks the student to complete the problem on the Skateboard Ramp worksheet.
 The teacher asks followup questions, as needed.
TASK RUBRIC
Getting Started 
Misconception/Error The student is not able to correctly draw a net for the given threedimensional shape. 
Examples of Student Work at this Level The student:
 Is unable to draw a net of the prism.
 Draws only the rectangular regions of the prism.
 Draws an incorrect representation of the prism.

Questions Eliciting Thinking What is a net?
What twodimensional shapes are used to make this prism?
How many triangles are in the prism? Do both triangles have the same dimensions?
How many rectangles are in the prism? Do the rectangles have the same dimensions? Do the rectangles have any dimension in common? 
Instructional Implications Define a net as a twodimensional representation of a threedimensional shape that will fold to recreate the threedimensional shape. Ensure the student is familiar with the terms used to describe the parts and dimensions of threedimensional figures including face, edge, vertex, slant height, and base. Provide opportunities for the student to decompose threedimensional figures into nets composed of familiar twodimensional shapes. Guide the student to clearly identify the decomposed parts and label the relevant dimensions.
Provide manipulatives such as pattern blocks or a for the student to explore and gain handson experience with creating nets by decomposing figures. Partner the student with a classmate to practice decomposing shapes into familiar figures to create nets. Ask the student to identify the faces, edges, and vertices of the threedimensional figure which will connect to create the net.
Have the student create a net of a given solid that is large enough to cut out and fold. Have the student label all dimensions as given in the original solid. Allow the student to cut out and fold the net in order to check its accuracy.
Consider implementing CPALMS activity Decomposing 3D Shapes (ID 13187) or an activity from National Council of Teachers of Mathematics called Fishing for the Best Prism, http://illuminations.nctm.org/Lesson.aspx?id=2911, to create nets of rectangular prisms in context. 
Making Progress 
Misconception/Error The student does not adequately describe the dimensions of the shapes composing the net. 
Examples of Student Work at this Level The student can identify the composing shapes and draw the net of the prism but:
 Does not label any dimensions of the rectangles or triangles.
 Makes one or more errors labeling the dimensions.

Questions Eliciting Thinking Can you identify the measurements of the base and height of each rectangle and triangle in the threedimensional figure?
Can you check that the edges of the rectangles and triangles will connect correctly to form a triangular prism?
Did you label the units in your diagram? 
Instructional Implications Ask the student to label the lengths of each edge of the original threedimensional figure on the worksheet. Guide the student to look for parallel edges that have the same length. Then ask the student to locate each face of the solid in the net and to compare the dimensions originally shown to those now written on the solid. Ask the student to revise any dimensions that appear to have been written in error. Provide assistance to the student, as needed. Provide additional opportunities for the student to decompose threedimensional figures into nets composed of familiar twodimensional shapes. Consider implementing the MFAS task Pyramid Project (6.G.1.4). 
Got It 
Misconception/Error The student provides complete and correct responses to all components of the task. 
Examples of Student Work at this Level The student accurately draws a net of the triangular prism and labels each figure using specific dimensions.

Questions Eliciting Thinking Is there more than one way to draw the net of the triangular prism?
How could you use the net to find the surface area of the prism? 
Instructional Implications Challenge the student to represent the triangular prism using a different net with the dimensions labeled. Ask the student to use the net to determine the surface area of the prism.
Consider implementing the MFAS task Pyramid Project (6.G.1.4). 
ACCOMMODATIONS & RECOMMENDATIONS
Special Materials Needed:
 Skateboard Ramp worksheet
SOURCE AND ACCESS INFORMATION
Contributed by:
MFAS FCRSTEM
Name of Author/Source: MFAS FCRSTEM
District/Organization of Contributor(s): Okaloosa
Is this Resource freely Available? Yes
Access Privileges: Public
* Please note that examples of resources are not intended as complete curriculum.