Main presenter			Co-presenter(s)
Name :	Nora Rayl		Name:	Dr. Mara Alagic
E-mail:	nrayl@usd259.net		E-mail:	mara.alagic@wichita.edu
Institution or Company:	Wilbur Middle School		Name:
Department:	Mathematics		E-mail:
City:	Wichita		Name:
State/Province:	KS		E-mail:
Country:	USA		Name:
Type of presentation:	Lecture :  25 minutes.		E-mail:
Conference strand and number:	ACDCA ,    Number: A32		Schedule:   Room:	Thursday, 12h00   1302
Related website:
Title of presentation:	Assessment using Technology: A Case Study in Computer Aided Drafting
Abstract:
We report on a case study project about assessing with technology in a small (n=12) middle level mathematics class. The goal was to assess middle level students understanding of proportional reasoning, in a problem based approach, using MLCAD (CAD program for creating Lego™ structures.) The concept is first explored on a concrete level through the comparison of different scale building materials. To demonstrate their understanding of proportional reasoning, students are guided to: (1) create a design on a computer drafting program and give dimensions of the finished product in the three scales of building materials, (2) build a structure based on the design given to them by a peer. Project assessment consists of two parts, the student’s computer aided design and predicted measurement correctness and their ability to accurately build a structure from a given design, or find possible flaw in that design. During this process the students are developing additional information technology abilities and skills, such as visualization, connections between two-dimensional representations and three-dimensional structures, computer-based modeling, and problem solving. This presentation reports on the challenges and implications encountered during the implementation of the project. Examples of student designs and structures will also be demonstrated.