Khan Academy: The Illusion of Understanding

Khan Academy and Computer Science

ALAS-KA: A learning analytics extension for better understanding the learning process in the Khan Academy platform

The Khan Academy platform enables powerful on-line courses in which students can watch videos, solve exercises, or earn badges. This platform provides an advanced learning analytics module with useful visualizations. Nevertheless, it can be improved. In this paper, we describe ALAS-KA, which provides an extension of the learning analytics support for the Khan Academy platform. We herein present...

Understanding the Rotating Snakes illusion

This paper explores potential mechanisms underlying Rotating Snakes a piece of Op-Art by Kitaoka evoking a striking apparent motion illusion. The Op-Art is based on an illusion developed by Kitaoka & Ashida (2003) and is similar to previous illusions developed by Fraser & Wilcox (1979), Faubert & Herbert (1998) and Naor-Raz & Sekuler (2000). The subsequent illusions, including Rotating Snakes a...

A Demonstration of ALAS-KA: A Learning Analytics Tool for the Khan Academy Platform

Instructors and students have problems monitoring the learning process from low level interactions in on-line courses because it is hard to make sense of raw data. In this paper we present a demonstration of the Add-on of the Learning Analytics Support in the Khan Academy platform (ALAS-KA). Our tool processes the raw data in order to transform it into useful information that can be used by the...

1131-1138 Khan LAJP 3197:Khan

Preparation of matrix tablets with rate controlling polymers is the simplest and most widely used method for achieving desired controlled release rate of drugs. The objective of the present study was to evaluate the effect of concentration and particle size of Ethocel Premium 100P and 100FP and also the co-excipients like HPMC, starch and CMC on the release kinetics of Tramadol HCl from matrix ...