Please suggest good entry level kit for education.

Hello! I am teacher at school, and I am currently looking for good entry level kit to build skateboard with. I would like to build 5 of them, with my students, telling them all about power systems which are being used there. I've tried messaging meepo board, but Kieran aint answering me. If someone can suggest me a good kit (with battery, remote, maybe even charger). It would help me a lot.