Day and Night, Seasons, White Night, Polar Night
* If you are asked to access your location, please allow it. * Your personal data is not stored on the server. * For iOS devices, please allow location access as follows. Day and night The … more
Inquiry Learning
Principle of least time (Fermat’s principle)
Why does a slightly curved path take less time than a straight path? Ants can move faster on flat stones than on rugged grass. Therefore, travel time is the shortest on slightly curved paths. This principle … more
Matter Wave and de Broglie’s Atomic Model
Light has both particle and waves properties at the same time. Likewise, de Broglie (France, 1892 – 1987) thought that such things as electrons that had so far been considered particles might possess wave nature (1932). … more
Light Refraction
You can drag the path of light. Refraction is the bending of a wave caused by a change in its speed as it moves from one medium to another. This occurs because of the slow speed … more
Micro:bit Maqueen robot code collection
Evasive maneuver (using distance sensor) Marqueen avoids walls or obstacles it encounters during its progress(< 20 cm). Source code https://makecode.microbit.org/#pub:75200-46487-20442-48437 Line tracker Line tracker – source code https://makecode.microbit.org/#pub:25457-13297-31811-64902 Black barrier Black barrier – source code https://makecode.microbit.org/#pub:28206-29997-02800-36929 ... more
Galton Board (Binomial Distribution)
Galton Board The Galton board is a tool for visualizing the principles by which the binomial distribution is created. Early Galton boards were made with wooden poles and beads that rolled down. Francis Galton, who created … more
Neutralization Reaction Model
Neutralization reaction The reaction of an acid and a base to form water is called a neutralization reaction. When an acid and a base react, hydrogen ions from the acid (H+) and hydroxide ions from the … more
Micro:bit Wireless DS18B20 (waterproof) Thermometer
You can use a Micro:bit as MBL by connecting a DS18B20 temperature sensor. If no sensor is connected, the Micro:bit built-in thermometer value is output. Thermal equilibrium experiment between hot and cold water The sensor connects … more
Micro:bit Wireless Maze
This is a game using the micro:bit’s 3-axis acceleration sensor. Updated 2023.10.27: Score recording function added. Parts list Click here to view the parts list.
Wave Propagation
Reset Wave In science, a wave is a phenomenon in which energy is transmitted through a medium. It is the only energy that is transmitted through the wave. The medium only vibrates but does not actually … more
State of matter
State of matter The material around us exists in three states (solid, liquid, gas) depending on temperature. Solids do not change shape and volume like ice, trees, and so on. The liquid has the property of … more
Micro:bit Wireless Built-in Thermometer
You can record the temperature changes with the Micro:bit’s built-in thermometer. Micro:bit only works with v2.00 or later products. Please use the Chrome browser if possible. It may not work in the in-app browser of social … more