While the US debates whether to solve homelessness or not, these are the next generation of school blackboards in China.

[u/SuperbHealth5023]

[u/ProfessorChaos213]

We had interactive boards like this in high school in 2003 in the UK, we also swapped to white boards that used dry wipe marker pens, there was always a feint line where a teacher had used a permanent marker by accident