### Introduction

This is a collection of activities developed by many different mathematics educators from many different countries. Some of the GeoGebra pages were translated to English, others edited and some are presented as is.

This collection provides examples of what is possible using GeoGebra to teach mathematics.

### Fractions

Model comparing and ordering fractions.

### Decimals

Model, locate and order using a number line.

### Fractions Operations

Model operations with fractions using area models.

### Integers Operations

Model operations with integer using a number line.

### Functions

Investigations and Assessments

### Triangles

Investigations

### Complex Numbers

Model operations with complex numbers using vectors.

### Probability and Statistics

Learning about central tendencies

### Illusions

What you see is not always what is real.