J. S. Mtebe, E. Y. Kibga, A. A. Mwambela, and M. M. Kissaka, “Developing Multimedia Enhanced Content to Upgrade Science and Mathematics Subject Content Knowledge of Secondary School Teachers in Tanzania”, JL4D, vol. 2, no. 3, Nov. 2015, doi: 10.56059/jl4d.v2i3.101.