The Active Learning Model, based on the constructivist theory, encourages students to have an active role in their own learning process. Currently, technology supports the Active Learning model through the Classroom Response Systems, electronic systems that enable the teacher to propose activities to the students and receive back their resolutions, allowing classroom collaboration, discussion and feedback. In order to support a more dynamic, natural and non-invasive use of technology, this work proposes the use of classroom related context information to support a Ubiquitous Classroom Response System (UCRS). In UCRS, teacher and student's context information are gathered and used to set and update mathematical variables and data records, like the affinity factor among students (which defines how productive the collaboration among two students is), the activity difficulty degree (which defines how difficult is for each student solve an activity), and the activity educational factor (which defines how educationally relevant an activity is). These factors allow UCRS to provide smart and dynamic features like the autonomous activity proposal for teachers (which suggests to the teacher the best activity to be offered to students at some time in the class), the automatic student's group formation (which considers the similarity among activities' resolutions and students' affinity factors), and a dynamic help request process among students. © Common Ground, Ricardo Caceffo, Heloisa Vieira da Rocha, All Rights Reserved.436172Anjaneyulu, K., Expert systems: An introduction (1998) Knowledge Based Computer Systems Group publicationAtterer, R., Streng, S., Non-Invasive Collaboration Aids: Supporting Group Learning with Pervasive and Ambient Technologies (2005) In International Conference on Computer Science and Software Engineering, 5, pp. 73-76Anderson, A., Effects of User Similarity in Social Media (2012) Proceedings of the fifth ACM international conference on Web search and data mining, , ACM New York, NY, USA. ISBN:978-1-4503-0747-5Anderson, R., Supporting Active Learning and Example Based Instruction with Classroom Technology (2007) ACM SIGCSE Bulletin, 39 (1), pp. 69-73. , Session: Teaching with tablets and inking technologies table of contentsAihua, Z., Study of ubiquitous learning environment based on Ubiquitous computing (2010) IEEE International Conference on Ubi-media Computing (U-Media), pp. 136-138. , JinhuaBonwell, C., Eison, J., Active Learning: Creating excitement in the classroom (1991) In ASHE-ERIC Higher Education, , Report No. 1. Washington, DC: George Washington UniversityCaceffo, R.E., Slides Manager Tool: Supporting Active Learning Using Tablet PC and Pen-Based Devices (2009) The Impact of Tablet PCs and Pen-based Technology on Education, pp. 1-5. , In: Caceffo, Purdue Press, USA, Ricardo Edgard. 2009b Ferramenta de apoio para o aprendizado ativo usando dispositivos com caneta eletrônica. Dissertação de Mestrado. Instituto de Computação, UNICAMPCaceffo, R.E., Vieira, R.H., Ubiquitous Classroom Response System: An Innovative Approach to Support the Active Learning Model (2011) In Ubiquitous Learning: An International Journal, 3 (1). , ISSN 1835-9795Chong, K.M., Hans, G., Usability Classification for spontaneous device association (2012) In Journal Personal and Ubiquitous Computing, pp. 77-89. , Springer-Verlag, London, UK.16: DOI 10.1007/s00779-011-0421-1Levis, D., Aperfeiçoamento Automático do Perfil do Aprendiz em Ambientes de Educação Ubíqua (2008) Em Revista Brasileira de Informática na Educação, 16 (1)Loke, S., Context-Aware Pervasive Systems (2007) In Architectures for a New Breed of Applications, , Auerbach Publications-Taylor& Francis GroupPopa, L., Building Extensible Networks with Rule-Based Forwarding (2010) Proceeding OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation USENIX Association, , Berkeley, CA, USAShih, Generating Adaptive Learning Sheets for Museum Tour Guide in U-learning Grid Environments (2010) 6th IEEE International Conference on Wireless, Mobile and Ubiquitous Technologies in Education (WMUTE), pp. 122-126. , KaohsiungVahey, P., Using Handheld Technology to Move between Private and Public Interactions in the Classroom (2007) Ubiquitous Computing in Education: Invisible Technology, Visible Impact, pp. 187-211. , Research Center for Educational Technology, Kent State University, New Jersey, London. ppWeiser, M., The computer for the 21st century (1991) Scientific American, 265 (3), pp. 94-104Wolfman, S., (2004) Understanding and Promoting Interaction in the Classroom through Computer-Mediated Communication in the Classroom Presenter System, , Ph. D Dissertation University of Washington, USAYin, A Collaborative Learning Service for SNS in Ubiquitous Computer Enviorment (2009) Proceedings of the 5th International Conference on Wireless 29 communications, networking and mobile computing, pp. 5536-5539. , Beijing, China pp