In this module you will learn about some typical activities that use technology in secondary school mathematics. These activities are elaborated for two different types of technological tool (TI-Nspire and GeoGebra). These activities aim to represent some characteristic aspects and application areas, where the use of technology can support mathematics teaching and enrich its efficiency. In addition to that, the different representations (geometrical, graphical, algebraic and numerical), which you will get to know in the given examples, promote an individual access to mathematics and enrich the efficiency of learning. Also many countries' mathematics curricula require students to use of these types of technologies.

Before you begin this module, we suggest that you:

• choose the tool which you will use (TI-Nspire or GeoGebra, or a combination of both) and make yourself familiar with some of the basic functionality.
• choose a target group of students according to your national curricula and with this in mind, check that they have the mathematical knowledge to access one of the activities from the module.
• consider the technological skills that the students may need to be introduced to in order to work on the tasks.

Module 1 is an introductory module – its aim is to introduce the basic possibilities and advantages of the use of technology in high school mathematics teaching. All of the other modules develop the ideas that have been introduced within Module 1.

For each of the three activities in Module 1 (Chicken fence, Box problem and Water gutter) it is assumed:

• get to know the teaching material: 2 hours
• reviewing the applets: 2 hours
• trialling the activities in the classroom (2-4 hours).

You may need to allow some time to adapt the activities for your own classroom situation.