## Introduction

Introduction

What do you know about forensic science? Do you know how long people have been using fingerprints in crime scenes?
In the 1890s Francis Dalton wrote about fingerprints and proved that each person has a unique print that stays the same all their life.
Argentina was the first country in the world to use fingerprinting in criminal cases and in 1904 the New York City police force began collecting fingerprints of criminals. In 1910 in France, the first crime lab opened and it used scientific techniques to examine evidence.

This fourth section contains 3 steps. Work them through step by step.

Step | Activity
1 Speaking (and Reading) | Make a list with your classmate about types of forensic evidence etc. Complete the chart. Read a text about trace evidence. Answer the questions.
2 Reading | Read the text. Do the exercise. Watch a video and answer questions: true or false. Complete the transcript.
3 Task | Follow instructions and write your own crime report.

| Difficult words? Search these on Cambridge Dictionaries