Interactive mathematics
The interactive activities are in English.
Coordinate plane
Place points by dragging or entering coordinates. Examine their quadrants, distance and midpoint.
Multiplication chart
Move through the chart to highlight a product. A rectangle shows how multiplication relates to area.
Unit circle
Move the point or enter an angle in degrees or radians. Track sine, cosine and tangent, then try the recall exercise.
Parabola explorer
Adjust a, b and c in a quadratic function. Watch the vertex, symmetry axis, intercepts and roots change.
Point–slope form
Move the anchor point and set the slope. Compare point–slope form with y = mx + b.
Slope of a line
Move points A and B on the grid. Follow rise over run, including horizontal and vertical lines.
Slope–intercept form
Set the sliders for slope m and intercept b. See how each parameter moves or tilts the line.
Systems of equations
Adjust two lines and locate their intersection. Try parallel or identical lines to see other solution cases.
Vertex form of a parabola
Drag the vertex and change a. Connect the graph to y = a(x − h)² + k and inspect h and k.