Programming Concepts

Explain nested for loops using a car odometer, the innermost loop controlling the ones digit must cycle fully before the outer loops steps forward, to help students better understand nested loops through a real world example.

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Misconception: The update in the index in a for loop (i.e., the third part of the for loop control statement) happens after the all the steps inside of the loop have happened.

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Start by having students transpose code from one loop type to the other when teaching all the different conditionals for the AP CS A exam.

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Misconception: students sometimes struggle to identify where in a loop variable values get changed.

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Use some of the following real world constructs to help beginning students form better understandings of abstract object-oriented principles.

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Use Potato Head Toys to teach classes, objects, methods, and properties so that students develop hands on experience with abstract topics.

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Have students instantiate personal hall pass objects when they wish to leave the classroom to help them learn that the values passed to a constructor have to match the number, type, and order of the arguments in the method signature.

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Show the class different ways nations choose their next monarch to illustrate pre-order and level order traversals as students visualize tree traversal methods.

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Use popular, repetitive music to teach loops in a beginning course because this motivates the purpose and application of loops while keeping students engaged by referencing popular culture.

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Scaffold students to evaluating and understanding 3 === “3” in Javascript using the following steps to help students learn the difference between confusing comparison operators.

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