Preview laboratory sketch / Mathematics
Change and accumulation
Move two points together on a parabola and watch the secant slope approach a tangent slope. Then accumulate rectangles under that slope curve and compare the total with the original change in position.
Interval width and Sample point experiment
Move two points together on a parabola and watch the secant slope approach a tangent slope. Then accumulate rectangles under that slope curve and compare the total with the original change in position.
What changed
11 rectangles approximate the accumulated area. Narrower intervals expose the curve more faithfully.
Return to the sketch
Keep the status visible.
The dedicated lab format will replace this generic renderer during lesson conversion.