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## Lesson: Integers

After you watch the lesson above, try this practice problem
Which of the following does not result in an integer?

## Lesson: Consecutive Numbers

After you watch the lesson above, try this practice problem
Two siblings are a year apart in age. If one sibling is $x$ years old, how can we represent the older sibling's age in terms of $x$?
Try this example:There are 5 rows of chairs in a small theater. The first row has $n$ chairs and each row has two more chairs than the one before it. How can we represent the number of chairs in the fifth row in terms of $n$?

## Lesson: Positive & Negative Number Rules

After you watch the lesson above, try this practice problem
If $a$ is a positive number and $b$ is a negative number, which of the following may be positive?

## Lesson: Even & Odd Number Rules

After you watch the lesson above, try this practice problem
If $n$ is an even integer, which of the following must be odd?