Development of An Assessment Benchmark for Synchronous Online Learning for Nigerian Universities. - Modesta Ezema; Boniface Nworgu; Deborah Ebem; Stephenson Echezona; Celestine Ugwu; Assumpta Ezugwu; Asogwa Chika; Ekene Ozioko; Elochukwu A. Ukwandu (CoRR, 2021)