The following interactive smartphone app shows how the center of gravity of a triangle is calculated using geometry. The vertices of the triangle can be moved interactively with your mouse (or your finger on a touchscreen). Title Center of gravity of a triangle Target audience Self-learners Platforms Internet browser Features Full screen modelossless magnificationLarge screens […]

# Mathematics

## Animation: Inner circle of a triangle (App)

The following interactive smartphone app shows how the inner circle of a triangle is calculated using geometry. The vertices of the triangle can be moved interactively with the mouse (or the finger on a touchscreen). Title Inner circle of a triangle Target audience Self-learners Platforms Internet browser Features Full screen modelossless magnificationLarge screens supported License […]

## Animation: Circumcircle of a triangle (App)

The following interactive smartphone app shows how the perimeter of a triangle is calculated using geometry. The vertices of the triangle can be adjusted. The app has been specifically designed for mobile phones and tablets. The layout of the app adopts to the format of the device. The app can also be used on a […]

## Animation: Fundamentals of integral calculus

The animation shows how an integral can be approximated by establishing upper and lower sums. The shape of the curve can be modified by moving the gray circles on either side. To display the root function, click on the large rectangle with the content. The values in the table at the top right can be […]

## Animation: Pythagorean theorem

The interactive animation illustrates the Pythagorean theorem. For this purpose, the squares formed from the edges of a right-angled triangle are shown. The point A of the triangle can be moved interactively along the perimeter. The squares continuously adjust in real time. Overview and Download Title Pythagorean theorem Target audience Teachers and lecturers Platforms Microsoft® […]

## Animation: Differential and integral calculus

The following animation offers a clear introduction to differential and integral calculus. The relationship between a derivative and a root function is illustrated. The example is a cart with position, velocity and acceleration as a function of time. The curve in the upper right area describes the position. In the upper left window, the trolley […]

## Animation: Geometric relations at the triangle

In the following interactive animation, the most important geometric relations are illustrated on a triangle. The vertices of the triangle can be moved interactively with the mouse. All drawn elements continuously adjust in real time. Overview and Download Title Geometric relations at the triangle Target audience Teachers and lecturers Platforms Microsoft® Windows®Apple® Macintosh® Features Full […]