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   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Tomas Lozano-Perez.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Mazor, Yuval, 1980-</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 55).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">Adding a graphical interface to online problem sets and tutors enables the addition of a variety of different types of graphical problems to interactive learning systems. The graphical interface allows professors and students to sketch graphs, draw shapes, and label objects using a mouse-based interface. A text-based I/O allows professors to create graphical problems, set up the solutions, and provide interactive feedback. Students working on a problem can be given hints, check their solution, or see the correct solution. The graphical extension also lays the groundwork for more complex graphical problems involving connectivity or other rules between graphical objects.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Yuval Mazor.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Electrical Engineering and Computer Science.</dim:field>
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   	&lt;Title>Graphical extensions to online problem sets and tutors&lt;/Title>
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   	&lt;Abstract>Adding a graphical interface to online problem sets and tutors enables the addition of a variety of different types of graphical problems to interactive learning systems. The graphical interface allows professors and students to sketch graphs, draw shapes, and label objects using a mouse-based interface. A text-based I/O allows professors to create graphical problems, set up the solutions, and provide interactive feedback. Students working on a problem can be given hints, check their solution, or see the correct solution. The graphical extension also lays the groundwork for more complex graphical problems involving connectivity or other rules between graphical objects.&lt;/Abstract>
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