Alphabets
Greek Alphabet
Sources: The data for these flashcards come from Carddia. Carddia is a website with multiple different physical flashcard resources available for sale.
Layers: order / the number position in the alphabet, the uppercase letter, the lower case letter, the Greek name for the letter, the English name for the letter, the sound the letter makes in English and how the sound is pronounced.
Hebrew Alphabet
Sources: The data for these flashcards also come from Carddia.
Layers: order / the number position in the alphabet, the Paleo(Ancient) Hebrew letter, modern Hebrew letter, the letter name, the transliteration, pronunciation, and numeric value.
Arabic Alphabet
Sources: There Arabic alphabet has 28 letters, though there are more flashcards than 28 for various sounds and other information. This information comes from a document put out by the Library of Congress.
Layers: the letter shape at the beginning, middle, end, and alone, in addition to the letter sound and the name of the letter.