Data Structures

Give students a caesar cipher to reveal a picture or message in order to teach how characters can be treated as numbers and to reinforce string manipulation.

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Analogize stacks and interrupts using a story in which a person is frequently interrupted in the course of performing everyday tasks.

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Tie the importance of searching and sorting to internet search engines, then encourage students to create search mechanisms for data they want to analyze.

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Teach ArrayLists for the AP CS A exam by having students uncover interesting information from your past students’ grades.

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When teaching arrays, have students complete the Four Rotations problems in pairs.

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Have students reason about optimization by creating a program that’ll make an 80 minute playlist for a party.

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

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To help students formalize their knowledge of data structures, act out these abstract ideas as a class.

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Help students develop a more thorough understanding of CS topics by designing and building games.

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