AWG vs. Diamater in mm. - 5th Grade

Today we looked at the math behind AWG (American Wire Gauge) vs. the diameter of a wire expressed in millimeters. We started to consider that wire has both a diameter and a cross-sectional area. The cross-sectional area grows much faster than the diameter. Stated another way: The cross-section of a wire increases the capacity to carry electrical power faster than diameter increases. We will look at this in more detail when we look at why there are not giants in 6th grade math. 

We also picked up the essential skill of being able to strip and braid a wire. Students combined this skill with hot glue in order to electrically and mechanically attach the wire end to a motor terminal.

Brain Teaser with Symmetry: If the 4 motors in the lower right picture are for a model car then why are the blue wires on top of two motors and on the bottom of two others? 

Brain Teaser with Symmetry: If the 4 motors in the lower right picture are for a model car then why are the blue wires on top of two motors and on the bottom of two others?