Labs
Free labs
No script, no right answer. The tools from the stops, taken out to play with.
Lab
Polynomial Workbench
Type any polynomial and see how it factors over the rationals.
Lab
Function Graph Lab
Drag the coefficients to draw linear and quadratic functions, and read the roots, vertex, discriminant and sign intervals straight off the graph.
Lab
Triangle Playground
Drag the three vertices (or use the arrow keys) and watch the area, circumcircle and centroid change.
Lab
Modular Arithmetic Lab
Pick a modulus: put integers on the dial and step around it, then open the addition, multiplication and power tables and look for patterns.
Lab
Grid Board Lab
A resizable grid: color it, cut out cells, tile it with dominoes, place pieces — the counters update as you go.