1A10.20 - Standards of Mass
Show the difference between a 1 kg mass and a 1 lb mass.
Pull out the 1 kg and 1 lb containers full of bbs of the respective mass. If being passed around the class, then all set. If being displayed to the students in the lecture halls, grab a backplane and a camera to make it easier to view these items
Show and tell visual of what 1 kg vs 1 lb looks like. If using this in a large lecture hall, make sure students can see the camera output prior to explaining the demonstration.
1 kg = 2.2046 lb
1 lb = 0.4536 kg