Interval Measurement Alarm

Repeating Measurement Alarm Clock

You can set an alarm to sound at specified minute intervals. It is useful for taking measurements at regular time intervals in a science laboratory. You can easily determine the corresponding time for each measurement count.

Element Symbol Matching Bubble Game

Element Symbol Typing Bubble Game (Scoreboard)

This page is the start screen for the Element Symbol Typing Bubble Game. When a teacher creates a game, a QR code for joining and a live scoreboard will be displayed on the screen. Students can … more

Color shadow

How Colored Shadows Work

How Colored Shadows Work This simulation demonstrates both the principle of additive color mixing and how colored shadows are formed. To understand colored shadows, there are a few important concepts to know. Each flashlight emits only … more

Convex Mirror & Concave Mirror Simulation

Convex Mirror & Concave Mirror

Real image and virtual image Looking at an object, we feel there is an object in it. By the way, if you feel that there is something, we say there is an ‘image’, even if there … more

Convex Lens & Concave Lens Simulation

Convex Lens & Concave Lens

Real image and virtual image Looking at an object, we feel there is an object in it. By the way, if you feel that there is something, we say there is an ‘image,’ even if there … more

Movement of Ion

Movement of Ion particles

* You can move ion particles with the mouse. Movement of Ion particles Ions acquire electric charge by gaining or losing valence electrons, depending on the type of atom. Electric forces act between charged substances. A … more

Try assembling an atom

Try assembling an atom

Freely combine protons, neutrons, and electrons to create your own atom. Notes This simulation only provides tools for building atomic models and does not determine whether the completed atomic model is stable. For every number of … more

Magnetic Field around of a Magnet or Earth

Magnetic Field around Magnet(or Earth)

Magnetic field around magnet The space where the magnetic force of the magnet acts is called a ‘magnetic field.’ The direction of the magnetic field is determined in the direction indicated by the N pole of … more

Plate tectonics

Plate Tectonics

Notes Loading the Earth map data uses approximately 6MB of data. Users who are sensitive to mobile data usage should consider this before accessing the page. Plate Tectonics Plate tectonics is the theory that Earth’s surface … more

Recrystallization

Recrystallization (Principle of precipitation)

Lower the temperature to precipitate some of the substances as a solid, then filter them through filter paper. Recrystallization Recrystallization is a method of separating and purifying a substance by using the property that the amount … more