For schools with no kits and for schools that do have kits.
Use simulators where physical robotics kits are unavailable. Tinkercad Circuits, VEXcode VR and micro:bit classroom pathways can stand in for design, testing and iteration.
Where schools do have kits, use the same design brief and algorithm plan, then move to real sensors, controllers and actuators. Add how-to video links and local teacher guidance to support build stages.