Not the exact analogy you described, but still offering interesting comparisons, the article
"Same" and "Equal" are not congruent illustrates multiple ways in which students' needs may differ, but they all need challenge.
1- mathematically and visually depicted: area of figures
2- reading and English Language Arts
Everyone gets the same number of minutes of reading instruction utilizing the same book (whether they need it or not, or whether they are ready for it or not)... Everyone is taught the letter "A" the same week, even the ones who figured it out on their own two years before.