1. 2017-12-12 [7] [R-sig-teaching] Data Science Materials r-sig-tea AbouEl-Makari 2. 2017-12-09 [1] [R-sig-teaching] learnr o similar package to make que r-sig-tea Manuel_SpĂno 3. 2017-12-06 [1] [R-sig-teaching] Data Science Materials] r-sig-tea User Hayden