By 2600 BCE, small Early Harappan communities had developed into large urban centers. These cities include Harappa, Ganeriwala, and Mohenjo-daro in modern-day Pakistan and Dholavira, Kalibangan, Rakhigarhi, Rupar, and Lothal in modern-day India.

You can make your own flash-card study sets, get access to study sets created by instructors, or browse for sets created by other users. It has built-in adaptive learning, meaning it pays attention to the questions you get right and wrong and makes sure you work on the most difficult material.

Proximity is one of the most important grouping principles and can overpower competing visual cues such as similarity of color or shape. The practice of placing related elements close together and separating unrelated elements can be seen almost everywhere in UI design.

Textbooks often include an online site where students can access practice quizzes and flashcards among other tools to help self-assess their knowledge and to study for upcoming tests/exams. Quizlet provides these same practice-type tools and can be customized by the course instructor.