**Warmup**

**Activity #1**

`Order Rational Numbers Without a Number Line.`

- Order the following numbers from least to greatest.

**Activity #2**

**Placing Rational Numbers on the Number Line**.

Try to spend time in this exercise to master the field of numbers.

- Read and follow the instructions in the applet below.
- Then, click when done to get a new set of numbers.

**Activity #3**

**Classify Rational Numbers.**

Spend some time in this exercise to master skills in the field of numbers.

- Read and follow the instructions in the applet below.
- When you finish dragging the numbers into the appropriate regions, click .
- Then, click to do some more.

**Challenge #1**

**Challenge #2**

Here are the boiling points of certain elements in degrees Celsius:

- Argon: -185.8
- Chlorine: -34
- Fluorine: -188.1
- Hydrogen: -252.87
- Krypton: -153.2

(1.) List the elements from least to greatest boiling points.

(2.) Explain why zero is considered its own opposite.

**Challenge #3**

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