Simulations for High School

Free interactive photosynthesis simulation. Explore photosynthesis hands-on online — great for whole-class or independent practice.

Free interactive pendulum motion simulation. Explore pendulum motion hands-on online — great for whole-class or independent practice.

Free interactive electric circuits simulation. Explore electric circuits hands-on online — great for whole-class or independent practic

Type any function and see its shape straight away. Plot up to three at once in three colours to compare them, drag the trace point to read a value off a curve, and see where each one crosses zero.

Move m and watch the line tilt; move b and watch it slide. Or drag the two points on the line and read the equation it writes back. A rise-over-run staircase climbs the line so slope becomes something you can count.

Free interactive human body systems simulation. Explore human body systems hands-on online — great for whole-class or independent pract

Approximate the area under a curve with strips and choose how each takes its height: left edge, right edge, middle, or a sloping top. Push the strip count up and watch the error fall, with the running total plotted as its own curve.

Two bodies under gravity trace an ellipse forever and you can write the formula down. Add a third and no such formula exists. Run the figure-eight orbit, nudge one mass, and watch a stable pattern become unpredictable while the total energy stays put.

A pendulum you can launch rather than just release: choose the starting angle and the starting spin. Beside it the phase plane plots angle against angular velocity, so a swing draws a closed loop and a full rotation draws an open track.

Free interactive natural selection simulation. Explore natural selection hands-on online — great for whole-class or independent practi

Free interactive cell structure simulation. Explore cell structure hands-on online — great for whole-class or independent practice.

Free interactive the carbon cycle simulation. Explore the carbon cycle hands-on online — great for whole-class or independent practice

Free interactive the nitrogen cycle simulation. Explore the nitrogen cycle hands-on online — great for whole-class or independent prac

Free interactive light and refraction simulation. Explore light and refraction hands-on online — great for whole-class or independent p