# Surf for More Math

## CHAPTER 2: NUMERATION

**Lesson 4: Comparing and Ordering Numbers**

Use these interactive activities to encourage students to have fun on the Web while learning about comparing and ordering numbers. Students can try these activities on their own or in pairs.

**Goal**

Compare and order whole numbers.

**Builds Upon**

Student Book pages 34–35

**Instructions for Use**

Gumball Surprise asks students to compare three-digit numbers, indicating which is greater or less.

When the machine shows two numbers, answer the question below them by clicking on the appropriate number. Then click on the arrow to continue to the next question.

Number Machine asks students to try to create a three-digit number greater than another given number.

To begin, click “Play the Game.” Look at Hacker’s Machine’s number and use “Your Numbers” to try to create a greater number. To put “Your Numbers” into “Your Machine,” click on each number in the order you would like it to appear in the machine. When your three-digit number is in the machine, a pop-up screen will tell you if you’ve answered correctly. If you cannot make a greater number with your given numbers, click on “Can’t Be Bigger” beneath “Your Numbers.”