In this section of the site, learners get a chance to engage directly with scientific and mathematical concepts through hands-on, playful, and visual tools. Instead of passively reading about theory, users can experiment, explore, and visualize ideas in real time.
Explore spherical coordinates with an interactive 3D-style diagram. Drag point P, compare spherical and Cartesian coordinates, and learn how rho (ρ), theta (θ), and phi (φ) describe a point in space. How to use the spherical coordinates interactive tool This activity extends the idea of polar coordinates into 3D space. Instead of only radius and … Read more
Use this thermal expansion visualizer to heat and cool different materials, compare real length changes, and discover why small expansions matter in bridges, rails, glass, and metal strips. How to use the thermal expansion visualizer 1 Choose a material Pick aluminum, brass, copper, steel, glass, concrete, or invar. Each one has a different expansion coefficient. … Read more
Use this daily calories estimator to learn how much energy you need daily. Young learners can compare broad kcal ranges and adult EER calculations while exploring how activity level and body measurements affect an estimate. How to use the daily calories estimator 1 Choose a mode Use basic learner mode for broad age-group ranges or … Read more
Use this equations of motion calculator to find missing velocity, acceleration, time, or displacement values for straight-line motion with constant acceleration. How to use the equations of motion calculator 1 Choose a positive direction Decide which direction is positive. Enter velocity, acceleration, and displacement in the opposite direction as negative values. 2 Enter three values … Read more
Explore polar coordinates by moving a point around a circular grid. See how radius and angle describe its position, connect polar coordinates to x- and y-coordinates, and practice conversions with worked steps. How to use the polar coordinate interactive tool The activity combines a movable point with a coordinate converter. Start on the graph, then … Read more
Use this interactive echo simulator to change the distance to a wall, air temperature, and reflecting surface, then observe the outgoing sound and its returning reflection. How to use the echo simulator 1 Choose the distance Move the distance slider to place the reflecting wall from 1 to 100 metres away. 2 Set the air … Read more
Explore the Cartesian coordinate plane by moving two points on the graph. The interactive tool calculates the slope, midpoint, distance, and equation of the line in real time, helping learners connect each formula to a visual result. How to use the Cartesian coordinate tool Start with points A and B on the coordinate plane. Every … Read more
Use this standing wave visualizer to select harmonics, adjust the wave, identify nodes and antinodes, and hear the corresponding tone. How to use the standing wave visualizer 1 Choose a harmonic Select a button from 1 through 6. The string pattern and the node, antinode, and tone readouts update immediately. 2 Adjust the controls Change … Read more
Use this interactive triangle calculator to enter three known measurements, solve the missing sides and angles, view a proportional diagram, and follow the calculation method. How to use the triangle calculator Enter exactly three known measurements and leave the other three boxes empty. At least one known measurement must be a side. 1 Match opposite … Read more
Use this interactive math functions graph tool to explore linear, quadratic, exponential, and logarithmic functions by changing coefficients and observing each graph. How to use the interactive math functions graph tool Select a function family, adjust its coefficients, and compare the equation with the graph and calculated features. 1 Choose a function Select Linear, Quadratic, … Read more