Loop( ) function checks the screenMode variable and shows the active screen. The default mode is 0 which executes the clock( ) function to show the live clock, temperature, and alarm status. Then ...

(Image credit: Tinkercad) Tinkercad works as a web and smartphone app, so it won't use up computer resources and, since it's free, can be accessible to a wide range of students from nearly any device.

2) Check out tinkercad – It took me 20min to teach a group of 12year olds how to use it 3) Download LEGO 2×4 brick model from thingiverse 4) substract the metal part from the brick ...