Today it’s time for another HTML5 online “demo”, it’s called Sketchpad and it’s a painting / drawing application. Go check it out here. You see? It’s got a beautiful Pixelmator-like interface made of ...

Move the shape of the peaks to create different quads . Is it possible to make a square that is not also a rectangles ? A diamond that is not also a parallelogram ? Why? Drag the vertices to create ...

Ask "What is a triangle?". 2. Using Sketchpad, create a variety of shapes (examples and non-examples of triangles). Begin with open and closed shapes, and shapes with or without straight sides.

Sketchpad allows drawing by specifying nothing but constraints. "These two segments are perpendicular; this segment is tangent to this arc," and so on. Sketchpad uses the powerful Z3 Theorem Prover to ...

One useful instrument to aid in teaching intermediate mathematics is the computer. In particular, Geometer’s Sketchpad. Geometer’s Sketchpad is a computer application designed to integrate mathematics ...

There was websocket used in this gifs, which is not part of example. To make it work with syncing just run this little websocket server width number 500 width of canvas in pixels height number 500 ...