Students in 1st grade today first built a circuit using a breadboard (a prototyping tool that allows temporary electrical connection between more than one wire). The students then worked in pairs to see how they could send the electricity from the battery though more than one wire. This is a first lesson on series circuits.
Although the class was focused on lighting up LED's with their efforts they also learned about the Cartesian plane and using a lookup table. The breadboards are electrically connected in rows so "1A" is connected to "1B through 1E", but "1A" is not connected to "2A". Being able to start on any intersection on the board and know how to add or take away wires in a circuit is a big step to being able to wire any circuit we wish to experiment with.