Learning to Program with ALICE Chapter 6 key terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Conditional expression | evaluate to being either true or false. In Alice the “If/Else” statement is used to do this.
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| Relational operators | (<, >, <=, >=, !=, ==)
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| Logical operators | (and, or, not)
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| Boolean expression | the part of a conditional expression that actually compares two items using either relational operators of logical operators.
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| Conditional execution | one of the two possible branches taken when an If statement resolves to either true or false.
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| If/Else statement | a block of program code that allows for the conditional execution f that code.
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| Abstraction | reduces and factors out details so that we can focus on one or a few main concepts at a time.
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| Return statement | found in a function and will return a value that is the same as the definition of the function.
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| Function | returns a value when used in a program statement.
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| Integer | a whole number (has no fractional parts)
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| Range | a set of consecutive numbers that are defined by a minimum and maximum value.
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| Random number | a set of numbers used in a computer program that does not repeat and has no recognizable pattern.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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