Lesson 7: Conditionals Practice

• AAP-2 - The way statements are sequenced and combined in a program determines the computed result. Programs incorporate iteration and selection constructs to represent repetition and make decisions to handle varied input values.

  • AAP-2.E - For relationships between two variables, expressions, or values: a. Represent using relational operators b. Evaluate expressions that use relational operators.

    • AAP-2.E.2 - The exam reference sheet provides the following relational operators: =, ≠, >, <, ≥, and ≤. ●       a = b●       a ≠ b●       a > b●       a < b●       a ≥ b●  a ≤ b These are used to test the relationship between two variables, expressions, or values. A comparison using a relational operator evaluates to a Boolean value. For example, a = b evaluates to true if a and b are equal; otherwise, it evaluates to false.
  • AAP-2.F - For relationships between Boolean values: a. Represent using logical operators. b. Evaluate expressions that use logic operators.

    • AAP-2.F.1 - The exam reference sheet provides the logical operators NOT, AND, and OR, which evaluate to a Boolean value.
    • AAP-2.F.2 - The exam reference sheet provides the NOT condition, which evaluates to true if condition is false; otherwise it evaluates to false.
    • AAP-2.F.3 - The exam reference sheet provides condition1 AND condition2, which evaluates to true if both condition1 and condition2 are true; otherwise it evaluates to false.
    • AAP-2.F.4 - The exam reference sheet provides condition1 OR condition2, which evaluates to true if condition1 is true or if condition2 is true or if both condition1 and condition2 are true; otherwise it evaluates to false.
  • AAP-2.H - For selection: a. Represent using conditional statements. b. Determine the result of conditional statements.

    • AAP-2.H.2 - The exam reference sheet providesIF(condition){<block of statements>}in which the code in block of statements is executed if the Boolean expression condition evaluates to true; no action is taken if condition evaluates to false.
    • AAP-2.H.3 - The exam reference sheet providesIF(condition){ <first block of statements>}ELSE{ <second block of statements>}in which the code in first block of statements is executed if the Boolean expression condition evaluates to true; otherwise, the code in second block of statements is executed.
  • AAP-2.L - Compare multiple algorithms to determine if they yield the same side effect or result.

    • AAP-2.L.3 - Some conditional statements can be written as equivalent Boolean expressions.
    • AAP-2.L.4 - Some Boolean expressions can be written as equivalent conditional statements.
• AAP-3 - Programmers break down problems into smaller and more manageable pieces. By creating procedures and leveraging parameters, programmers generalize processes that can be reused. Procedures allow programmers to draw upon existing code that has already been tested, allowing programmers to write programs more quickly and with more confidence.

  • AAP-3.A - For procedure calls: a. Write statements to call procedures. b. Determine the result or effect of a procedure call.

    • AAP-3.A.9 - The exam reference sheet provides procedure INPUT(), which accepts a value from the user and returns the input value.
• CRD-2 - Developers create and innovate using an iterative design process that is user-focused, that incorporates implementation/feedback cycles, and that leaves ample room for experimentation and risk-taking.

  • CRD-2.I - For errors in an algorithm or program: a. Identify the error. b. Correct the error.

    • CRD-2.I.1 - A logic error is a mistake in the algorithm or program that causes it to behave incorrectly or unexpectedly.
    • CRD-2.I.2 - A syntax error is a mistake in the program where the rules of the programming language are not followed.
    • CRD-2.I.3 - A run-time error is a mistake in the program that occurs during the execution of a program. Programming languages define their own run-time errors.
    • CRD-2.I.4 - An overflow error is an error that occurs when a computer attempts to handle a number that is outside of the defined range of values.
  • CRD-2.J - Identify inputs and corresponding expected output or behaviors that can be used to check the correctness of an algorithm or program.

    • CRD-2.J.2 - Defined inputs used to test a program should demonstrate the different expected outcomes that are at or just beyond the extremes (minimum and maximum) of input data.

• AP - Algorithms & Programming

  • 2-AP-10 - Use flowcharts and/or pseudocode to address complex problems as algorithms.
  • 2-AP-12 - Design and iteratively develop programs that combine control structures, including nested loops and compound conditionals.

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• CSP Debugging Guide - Resource
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• Conditionals Practice - Slides
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• Guide to Practice Lessons - Video