411 REFERENCE · Wikibooks
Memorizing the Katakana/The Vowels
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
kata_a ア is an anchor.
kata_i イ looks like an i but the top dot is stretched.
kata_u ウ is an umbrella.
kata_e エ is a baby elephant.
kata_o オ is the origin in a Cartesian coordinate graph.
Memorizing the Katakana The Vowels The K line