The crossover acts like two wires crossing over each other, but not touching each other. Electricity can move along each of the wires, but the crossing paths don’t interfere with each other. It would be impossible to create complicated circuits without wires that cross. Because the crossover allows the paths of the marbles to cross over each other without interfering with the path of the next marble, they are performing one small component of what happens in a circuit board.
So how do we teach computing skills in a competitive culture of learning without an overexposure of screen-time while also nurturing a child’s sense of creativity, spontaneity, and collaboration?
Here is a list of educational tools (some which have educator resources for implementing into the classroom) that will allow students to develop some pretty amazing/computational skills broken down by age. ALL are STEM based and screen free: