Useful links:
Learning Pinyin: https://xuele.moe.edu.sg/xuele/PYCB/Files/MOE_idx.html
Pinyin Song: https://www.youtube.com/watch?v=ocgsflnEgqY&list=PLVLl2O8ZpxGm_fKpG71z86y9l8jK_3ecE
Hanzi Written Order: http://www.hanzi5.com/bishun/
Quizlet: check Google Classroom for join code