# Using Math to Model a Circuit - 6th Grade

In 5th grade we started to look at series and parallel circuits. As 6th graders we learn to use math to calculate the resistance in a circuit *and then* measure to verify that calculation. We use estimation to say that if we have four of 4.7k Ω resistors in series than we are looking at about 20k Ω of resistance. Similarly if you put those same resistors in parallel you would see about 1k Ω of resistance.