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4 Points =
The students use brainstorming to develop several possible designs.
They prioritize their strategies in solving the problem. As they work on
the task, they make necessary modifications to their design. Students
demonstrate an understanding of the problem-solving process. They are able
to make a design meeting the given conditions and the requirement that it
support a 100-gram mass at the greatest horizontal distance from the table. Students demonstrate an
understanding of the scientific principles involved in making the design. The students work cooperatively,
with all members contributing equally to the effort.
3 Points = The students use brainstorming to
develop possible designs and select an appropriate design. They make some
modification on the design as they work through the problem. The final
product meets specifications. Students demonstrate an understanding of the
problem-solving process. Although the model bridge supports a 100-gram mass at the greatest horizontal
distance, the model is somewhat fragile. Students demonstrate an understanding of most of the scientific
principles required in making the model. The students work cooperatively, but not all members contribute
equally to the effort.
2 Points = The students have difficulty
brainstorming and develop only a few strategies to make the model. They do not
make any modifications as they work through the design. Students
demonstrate only limited understanding of the problem-solving process and have a limited
understanding of the scientific principles necessary to the problem. The model is poorly made,
and they have difficulty showing that it will support a 100-gram mass at the end of its horizontal
distance. The students tend to work independently rather than as a group. One or two members dominate
in performing of the task.
1 Point = The students need an explanation of the problem before they
can determine a design. Their conversation is not productive and they develop only one design for the
bridge. The final product is very poorly constructed and does not meet the stated conditions. It will
not support a 100-gram mass at its greatest distance from the horizontal. The students have
little, if any, understanding of the scientific principles involved in the problem. There is little evidence
of group effort on the task.
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