Today was circuit day! We started learning about batteries, multimeters and the flow of electrons. First of all, batteries contain two cores. The inner core and the outer core. the inner core contains zinc with added electrons, while the outer core contains positively charged copper, or copper with removed electrons. When you connect the two ends with a conductive material, the electrons from the zinc start flowing to the copper, creating electricity. You should never connect the top end and the bottom end, for the electrons flow out of control. This can potentially spark and ignite. We learned all of this today! Tomorrow, we will finally be creating these circuits!