### Course 2: Lesson 1C: Coordinate Plane

Remember today we plotted points on a coordinate plane.We always write a point with like this: (x-coordinate, y-coordinate).

The coordinate plane is broken up into 4 quadrants and they are labeled as follows:

Here is a Khan Academy video about our lesson today.

Try this Khan academy activity to practice plotting points and naming quadrants. Click here.

### Pre-Algebra: Lesson 2-2: Adding Integers

**Remember our song/poem for adding integers:**"Same signs add and keep,

Different signs subtract,

Keep the sign of the higher number,

Then it will be exact."

**Here's another way of writing the Rules:**When the integers have the SAME signs:

1. Add the numbers together.

2. Keep the same sign.

When the integers have DIFFERENT signs.

1. Ignore the signs.

2. Subtract the 2 numbers.

3. Give the answer the sign of the larger number (number with greater absolute value).

Here's a Khan Academy video explaining this concept:

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