Comment by sethammons

What _is_ a fraction to you? How do you visualize it? I didn't calculate to decimal to compare the size of those fractions (I couldn't tell you intuitively if 5/7 is more than 9/13, I would have to convert the denominator or calculate the decimal).

For me, a progress bar or a pizza is the default. And because I cook rice daily and we were talking volume, my "progress bar" was like a measuring cup. Mentally, I can stand two measuring cups next one another, and filling one of two parts is less than filling two of three parts.

Maybe there are ways to be more aware of or insert ways to force the use of fractions in physical space. More cooking, more building, etc. The more comfortable you get the more intuition you should build