These are useful websites/apps for new students to catch up. Also excellent tools for existng students to refresh their vocabulary skills.
PinYin Review
1. PinYin Song
(source: https://www.youtube.com/watch?v=H6jX4oZrlwo)
PinYin Practice Online: Link
2. Free Apps
Learn Chinese Pinyin – Baby Where By Liu Chongyu ; IOS
Kids learn chinese and pinyin free HD,baby easy study ABC
By zhang yong ; IOS Android
Vocabulary Review
Free Apps
All category with flash cards.
Chinese Flash Cards – Kids learn Mandarin Chinese quick with audio & video flashcards!
By eFlashApps, LLC ; IOS Android
Animals
Kids Learn Mandarin Free – A Fingerprint Network App By Fingerprint; IOS Android
Conversation
Learn Chinese Free – Travel Phrases, Words, Vocabulary Translator By Bravolol Limited
IOS