Content Misconceptions

Introduce memory and efficiency a few months into the AP CS course. Do so in a hands-on way by demonstrating how a computer cannot compute a slow problem.

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When you write a function, like (foo x), students don’t realize you can put a variable with a name OTHER than x in there, or an actual number.

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Before moving onto arrays, make sure students feel really confident about loops.

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Teach students that running tests cannot prove that a code works. It can, however, prove that code is not working.

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When creating websites, many misconceptions students have arise from not fully understanding CSS, Cascading Style Sheets.

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Emphasize that students should know which HTML tags are self-contained to make writing and debugging code easier.

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When teaching about logical operations, give examples that use real-life situations or events.

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Emphasize that it is not necessary to add the reference operator, &, in C++ when passing an argument to a function that takes in a reference.

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Emphasize to your students that in languages like Java a semicolon ends a complete thought, rather than just a line of code.

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Be explicit about what direction references point when teaching about objects and references.

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