During “LED it up”, we learned how to create simple circuits using 3 volt and 9 volt batteries. We learned that if there is no resister on a 9 volt battery, it will almost instantly. We also used breadboards to make the circuits more easily and connected a switch to both the 9 volt and 3 volt battery. We used switches to complete and disconnect the circuits. In the end, we used an Arduino board to program a LED to blink.