Exploring Angles with Microworlds and Circular Reasoning

I spoke at three NCTM conferences in fhe fall of 2005.

The talks addressed elementary school children's well-documented difficulties in comparing, measuring, drawing and describing angles. I will describe the use of Montessori-inspired (mostly computer-based) activities that address these difficulties and resulted in significant gains in performance on selected NAEP geometry questions for a group of third and fourth graders.

Here are the slides for my talk

Leone Learning Systems, Inc. (LLS) is a North Shore company that provides online courses for kids anywhere and local teaching and tutoring services for students in Chicago and the Northern Suburbs of Chicagoland. LLS also provides a free geometry software package for children age 6 and up, and free resources for teachers and parents. This site includes information about classes taught, availability for tutoring, learning activities for kids, lesson plans, and ongoing software and curriculum research and development efforts.