Spanish indefinite articles translate as 'a' 'an' or 'some' while definite articles translate as 'the.' Check out the links!
Song
Tutorial - articles
Tutorial - gender
Definite Articles Online Practice
Flashcards for Spanish Definite Articles (Quizlet)
http://www.quia.com/quiz/2004720.html (quia: Fill in blanks)
Rags to Riches for Definite Articles (quia: rags to riches)
http://www.quia.com/ba/581539.html (quia: battleship)
Indefinite Articles Online Practice
Think you know it? Test yourself!
Jeopardy for both articles (Quia)
Practice for both articles (spanish website)
http://www.quia.com/rr/832927.html (quia: rags to riches - both articles)
Google Quiz Indefinite Articles: https://goo.gl/forms/Zj2CpR2vnsjroBTP2
Google Quiz Definite Articles: https://goo.gl/forms/OhsNbRoZwGfmkPQj1
Google Quiz Plural Nouns: https://goo.gl/forms/3vjTTRfgGVAMIoR42