Research and Practice in Technology Enhanced Learning

Table 1 Types of objects, drawing operations, and attributes for configuration

From: Practices of algorithm education based on discovery learning using a program visualization system

Objects	Operations	Attributes
Circle	Create	Corresponding variable^a
Square	Delete	Main object ID^b
Rectangle	Update	Position
Table		Width
Connector		Height
Line		Color
Label		Line color
Balloon		String color

^aOnly for circle, square, rectangle, and table objects
^bOnly for connector, line, and balloon objects

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