multiple representations. For instance, in prekindergarten
through grade 2, teachers and students can work with
on-screen versions of concrete manipulatives, getting
accuracy and immediate feedback. Later on, dynamic
geometry tools can be used for generating conjectures.
Several software packages allow students to view a
function simultaneously in tabular, graphical, and equation
form. Such software can allow students to examine how
certain changes in one representation, such as varying a
parameter in the equation ax2 + bx + c = 0,
simultaneously affect the other representations.
Computer and calculator simulations can be used to
investigate physical phenomena, such as motion