This website provides a screen for teachers to use in their classroom. It includes several tools along the bottom of the screen including: a timer and clock, a random name generator and even a sound level monitor! I think this screen is great for both primary and secondary teachers. It provides a lot of similar features to smart notebook, which is great for any teachers who do not have access to this. Furthermore, all the tools are in an easily accessible location. This site has many language options, which makes it usable in a variety of classrooms.
Quickly get a timer, textbox, noise meter, drawing tool, name picker, work symbols and more. Completely free.
Source: The best screen for every classroom! Try it and love it.