Erika C. Sz Erika C. Sz Erika C. Sz’s tracks 15 characteristics of a 21st century Teacher by Erika C. Sz published on 2015-07-07T19:59:58Z 15 characteristics of a 21st century Teacher by Erika C. Sz published on 2015-07-07T19:55:56Z 15 characteristics of a 21st century Teacher by Erika C. Sz published on 2015-07-07T19:54:55Z