A THEME OR IMAGERY MAY BE USED FROM START TO END IN EXPLAINING OR I...

1. A theme or imagery may be used from start to end in explaining or illustrating key concepts in the e-learning contents [7]. Common themes include sports, movies, food, vehicles, people, geography, history, etc. For example, in binary search trees in data structures, all keys smaller than the current root key go to the left subtree, while all keys larger go to the right subtree. To drive home this essential character-istic of binary search trees, a “small to the left, and the large to the right” theme or image (e.g., short persons on the left of the center, and tall.persons on the right) may be shown.