Math Focus 4

# Surf for More Math

## CHAPTER 2: NUMERATION

### Lesson 3: Expanded Form

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

Goal

Represent numbers to 10 000 using expanded form.

Builds Upon

Student Book pages 42–44

Instructions for Use

Place Values of Three Digit Numbers allows students to represent numbers using expanded form.

To start Place Values of Three Digit Numbers, click on the “Place Values” link under Fourth Grade – Topics, and then click on the “Place Values of Three Digit Numbers” link.

To use Place Values of Three Digit Numbers, scroll down to practice and click on the “Start” button. Type in your answer, and then click on the “check” button to check your answer.

What’s Your Name allows students to represent numbers using standard and expanded form.

To use What’s Your Name, click on the brown arrow buttons to continue to each next page. After reading about different number forms, there is a checking section. Type in the answer and click on the “Check Me!” button to check.

Place Values – Expanded Form allows students to represent numbers in standard form if given numbers in expanded form.

To start Place Values – Expanded Form, click on the “Place Values” link under Fourth Grade – Topics, and then click on the “Place Values – Expanded Form” link.

To use Place Values – Expanded Form, scroll down to practice and click on the “Start” button. Type in your answer, and then click on the “check” button to check your answer.

Place Value Playoff! allows students to identify equivalent numbers in standard and expanded form.

To start Place Value Playoff!, click on the “Place Value Playoff!” link.

To use Place Value Playoff!, select one of the games: “Concentration” or “Matching”. Each game requires you to match the standard notation to the expanded notation by clicking on the matching pair.