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# Unit 1: Limits and continuity

3,400 possible mastery points
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## About this unit

Limits describe the behavior of a function as we approach a certain input value, regardless of the function's actual value there. Continuity requires that the behavior of a function around a point matches the function's value at that point. These simple yet powerful ideas play a major role in all of calculus.

## Estimating limit values from tables

### Practice

#### Quiz 1

Level up on the above skills and collect up to 560 Mastery points

## Determining limits using algebraic properties of limits: direct substitution

### Practice

#### Quiz 2

Level up on the above skills and collect up to 560 Mastery points

## Determining limits using the squeeze theorem

### Practice

#### Quiz 3

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## Removing discontinuities

### Practice

#### Quiz 4

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## Connecting limits at infinity and horizontal asymptotes

### Practice

#### Quiz 5

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## Working with the intermediate value theorem

### Practice

#### Quiz 6

Level up on the above skills and collect up to 160 Mastery points
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#### Unit test

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