The information on this page is based on the correct historical data. Modern hiragana and katakana have been derived from the kanji shown. Our other page shows how hiragana and katakana can be more easy remembered and it is only partially based on factual knowledge. That page’s purpose is to help students who have no knowledge of kanji memorise the new kana scripts. If you want to memorise hiragana/katakana, then here is the link to that page:
Good luck!
Here is the factual knowledge page:
Lami Japan 