# Surf for More Math

## CHAPTER 2: NUMERATION

**Lesson 4: Describing
10 000**

Use this interactive activity
to encourage students to have fun on the Web while learning about numeration.
Students can try this activity on their own or in pairs.

**Goal**

Explore and describe things involving 10 000.

**Builds Upon**

Student Book page 45

**Instructions for Use**

**Guess the Number **allows students to guess numbers under 10 000 given a number range.

To start Guess the Number,
click on the first “Guess the Number” link. Type in a range
of 0 to 9999, and then click on the green arrow button.

To use Guess the Number, type in a number between 0 and 9999. With each guess you make, the range will become smaller. When you guess the correct number the game ends.