A site that presents calculus as the mathematics of change, in order to make the subject an essential part of the general education of the population and an accessible and relevant domain of mathematics. TERC envisions calculus as one of the important contexts for students' learning of arithmetic, algebra, and geometry starting in the elementary grades. Each module offers interactive Java applets and references. LEGO Logo projects are integrated into the science and computer curriculum of the lower school. Students in the second grade study levers, third graders study pulleys, fourth graders study gears, and fifth graders combine their previous studies into a robotics project.
Constructions use simple machine systems, lights, sounds, and at times a sensor.
At the end of the unit, teams present their projects to parents, friends, classmates, and teachers.