Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...

From plotting routes to revealing traffic light locations, these free navigation services continue to evolve with new features. But which is tops? I tested both map apps and found a clear winner. My ...

Maps can be drawings or models. They can help you find where you are and where you are going. They show symbols (pictures) for places such as car parks or places of worship like churches. They also ...

All straight line graphs have an equation that can be written in the form 𝑦 equals 𝑚𝑥 add 𝑐, where 𝑚, the coefficient of the 𝑥 term, is the gradient or slope of the line. The constant, 𝑐, is ...