abstraction, computational thinking approach to managing complexity by simplifying things through identifying what is important, and what detail can be hidden, algorithm, a sequence of precise instructions or steps (sometimes a set of rules) to achieve an objective, code, instructions (or sometimes rules) that can be understood by a computer, debug, correct mistakes in a program or algorithm, event, something that happens within a computer program to cause some particular code to be run, such as an internal message being received or a sprite being tapped by the user, input, data supplied to a computer, in this case, tapping on the screen of a tablet, output, information produced by a computer – in this case, moving sprites on a screen, text and audio, parallel processing, when programs run (or appear to run) simultaneously, program, sequence of instructions (or sometimes a set of rules) that can be followed by a computer, repetition, programming construct which allows a group of instructions to be repeated a number of times, or until a certain condition is met, Scratch, simple, block-based programming language in which programs for characters are built by snapping together code blocks, sprite, a graphical character in a program that can be given its own sequence of instructions, bug, an error or mistake in a program or algorithm, causing the computer or robot to behave in a manner that was not originally intended

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