The final activity allows students the opportunity to apply this knowledge as they make a telegraph unit and develop a code system to communicate with each other.
Students understand that an electrical current produces a magnetic field.
Students understand that when energy is added to a system, work may be produced. Students can continue from the above to use maps. Students can orient the maps to coincide with the compasses they have made and then give directions to places using the compass to assist them in determining in what direction some one should turn or head. Relatively simple mazes can be drawn and copied for the same purpose if maps are not available. Or one could draw simple maps of a fictitious small town to assist students in seeing some practical application to this process.