Hi. It's Mr. Andersen and today I'm going to be talking about voltage, current and resistance. All of these things are found in electric circuits. It's hard to see electricity...
Lower the PYRAMID. And now the CONE. Good job! We need a CUBE and a CUBOID for our foundation. Oh, hi! Look, we are building a giant roller coaster. Do you want to help us? Here comes Benny with...