You might like the top section 'remembering the sizes of things' of my wasn't-intended-to-be-public slowwwlllyyy-loading page http://www.clarifyscience.info/par

You might like the top section 'remembering the sizes of things' of my wasn't-intended-to-be-public slowwwlllyyy-loading page http://www.clarifyscience.info/part/Atoms http://www.clarifyscience.info/part/Atoms . It's basically chunked powers-of-ten, so two 1000x frames ("micro view" um->mm, and "nano view" nm->mm) get you down to 'atoms look like sand'. It seems to provide useful scaffolding - a place to hang some flavors of rough-quantitative knowledge. It seems to at least sometimes work nicely with bionumbers "how big is a X" searches, as "N um"-like answers permit "oh, so it's about this (tactile kinesthetic) big - so it's bigger than Y and smaller than Z and about the same size as W - hmm, so I wonder how many X's there are in a mumble - new search: 'how man X in a mumble'". But that's purely anecdotal, and from very limited experience.