These videos accompany the papers "Teaching Human Teachers to Teach Robot Learners" - A. Sena, Y. Zhao, M. Howard, ICRA 2018, and "Quantifying teaching behavior in robot learning from demonstration" - A. Sena, M. Howard, IJRR 2020. Videos were used in the study to standardise the amount of knowledge a group of novice robot users had prior to participating in the experiment. No further information was provided during the experiment.