Auteur principal			Co-auteurs(s)
Nom :	Nora Rayl		Nom :	Dr. Mara Alagic
Courriel :	nrayl@usd259.net		Courriel :	mara.alagic@wichita.edu
Institution ou compagnie:	Wilbur Middle School		Nom :
Département:	Mathematics		Courriel :
Ville :	Wichita		Nom :
État/Province :	KS		Courriel :
Pays :	USA		Nom :
Type de présentation:	Conférence :  25 minutes.		Courriel :
Conférence et numéro :	ACDCA ,    Numéro : A32		Horaire :   Local :	jeudi, 12h00   1302
Site Internet :
Titre de la communication :	Assessment using Technology: A Case Study in Computer Aided Drafting
Résumé de la communication :
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.