Programming Misconceptions

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Presentation transcript:

Programming Misconceptions

Agenda Programming misconceptions: definition and history Misconceptions on which (programming) language (Some) Examples and categories of programming misconceptions Effect of programming misconceptions on CS Education Origins of programming misconceptions A lot is done. What do we need to do still?

A programming misconception An incorrect understanding of a concept or a set of concepts, which leads to making mistakes in writing or reading programs

Participants: 178 school-age children

M23: Diffculties in understanding the sequentiality of statements

M9: A variable can hold multiple values at a time

M150: Diffculties understanding the eﬀect of input calls on execution

M14: A variable is a pairing of a name to a changeable value M14: A variable is a pairing of a name to a changeable value. It is not stored inside the computer

M15: Primitive assignment stores equations or unresolved expressions

M30: Adjacent code executes within loop

M17: Natural-language semantics of variable names aﬀects which value gets assigned to which variable

M31: Control goes back to start when condition is false

M33: Loops terminate as soon as condition changes to false

M11: Primitive assignment works in opposite direction

M26: A false condition ends program if no else branch exists