@article{9ec39ef4a89d4ee88a102800c311cce3,
title = "Analyzing the Impact of Using Optional Activities in Self-Regulated Learning",
keywords = "learning analytics, MOOCs, optional activities, self-regulated learning, Khan Academy",
author = "Ruiperez-Valiente, \{Jose A.\} and Mu{\~n}oz-Merino, \{Pedro J.\} and \{Delgado Kloos\}, Carlos and Katja Niemann and Maren Scheffel and Martin Wolpers",
year = "2016",
month = jan,
day = "19",
doi = "10.1109/TLT.2016.2518172",
language = "English",
volume = "9",
pages = "231--243",
journal = "IEEE Transactions on Learning Technologies",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "3",
}