Principal Investigators


Daniel Lynn Watt was the Project Director at the Newton site of TELG. He has been working with computers in education since 1976, and he was a "teacher researcher" in one of the first classroom research projects with the logo computer language.
Since 1991, Dan has been part of a team working at EDC and funded by IBM, to create comprehensive curriculum which are built around mathematical microworlds that embody rich content material.

Doug Clements, Professor, Department of Learning and Instruction at the State University of New York Buffalo, was the Principal Investigator at the Buffalo site. He has developed several constructivist-oriented software packages with his colleague Julie Sarama, including their own version of Logo and Logo-based software activities, a computer-based manipulative software environment and several others (Trips, Tumbling Tetrominoes). Before that, Doug co-developed an elementary geometry curriculum based on Logo with Michael Battista and conducted research on the teaching and learning of geometry with and without computers.
Along with the TELG project, Doug worked on a project titled "Building Blocks-Foundations for Mathematical Thinking, Pre- Kindergarten to Grade 2: Research-based Materials Development" for which he and Julie Sarama developed a curriculum that includes software and print materials for early childhood mathematics.

Rich Lehrer, Professor of Cognitive Science Applied to Education at the University of Wisconsin in Madison, was the Principal Investigator at the Madison site. He is a former high school science teacher who has developed a professional career marked by continuing attention to the relationship between cognition and instruction in the context of schooling. Rich has pioneered classroom research that investigates cognitive technologies as tools for thought in several disciplines (mathematics, science, literacy).
Working with a team of teacher-collaborators, Rich has formulated innovative geometry instruction for primary and elementary-grade students that is guided by longitudinal study of student thinking about space. Rich also focuses on collaborating with teachers to craft, implement, and assess modeling of mathematics and sciences in the elementary grades.

Research Staff and Consultants


Zuzka Blasi was the Research Associate at the Newton site. She came to EDC at the start of the TELG Project and has a background in human service and research.

Dick Lesh, Associate Dean, Research and Development in the School of Education and Director of the School Mathematics and Science Center at Purdue University, was the assessment consultant for the TELG Project. His areas of specialization include research and assessment on problem solving; learning and instruction in mathematics and science education, teacher education; computer-based & text-based curriculum development for children and adults; and research design in mathematics and science education. He also currently serves as Chief Program Designer for the PACKETS Performance Assessment System for Grades 3-5.