Language assistance becomes an integral component of the teaching-learning process in non-English-speaking multilingual societies where education takes place predominantly in local languages. Subtitles have been found to be beneficial in facilitating understanding of English language media in such situations. However, when accompanied with…

Teacher practice is normally assessed by observers who watch classes or videos of classes. Here, we analyse an alternative strategy that uses text transcripts and a support vector machine classifier. For each one of the 710 videos of mathematics classes from the 2005 Chilean National Teacher Assessment Programme, a single 4-minute slice was…