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Activity 02: Collecting data

Extracting and examining soil and water samples

Objective: Active collection of environmental data
Learning outcomes: Learners are familiar with basic equipment for simple sample extractions and they are able to extract and analyze soil and water samples independently.
Previous knowledge: No previous knowledge
Duration: 60 min
Materials / Conditions: Magnifying glass (not necessarily), test tube, tweezers or blunt scissors, bowl and dip net
Methods / Techniques: Group work, cooperative learning, extracting samples, collection of environmental data
Learning subject: Biodiversity / Module 3: Collection, Analysis and Preparation of Biodiversity Data / Level: First contact

There are numberless animals in the world oh which many can’t even be recognized as they’re very small and only detectable through precise observation. In this unit you will learn about the equipment that’s necessary to examine these animals. Additionally, you will extract water and soil samples yourself.

1. Take a look at the pictures in Material (Cf. Resources section) and match them with the following terms: Magnifying glass, test tube, tweezers, bowl and dip net.

2. With the help of this equipment you’re able to examine animals and plants in different areas. Which areas would you like to explore? Write down those areas located close to your home or your school.

3. Get active! Provide yourself with the necessary equipment and investigate your chosen area with a small group. Read Material 2 before you get started.

Material 1 :
(own drawing)

Material 2: Instructions
You work in a group together with two or three others. In your group, divide your equipment up.
Soil sample:
All test tubes have to be marked in their middle with a pen. That’s how you make sure that each group investigates the same amount of soil. Stick your tube into the ground until you’ve reached the mark (e.g. beach, ground of the sea or soil. Now pull out the tube carefully and put the its contents into the bowl. Add some water and stir carefully. Wait for the soil to settle and check for living creatures in the water. You can also take them out of the water with your tweezers to take a closer look. Sort and count all the living beings you found and note them in a table
Water sample:
Walk into the water until it has reached your knees. Take the dip net and swing it in the water five times. Sort and count the living beings you found and note them in the table.

Possible results / Results:
1) Magnifying glass, test tube, tweezers or blunt scissors, bowl and dip net

2) Sea, sea ground, forest, lake, meadow, park

Related activities:

Author: Al-Umaray Silvia and Hinz Laura
Aus dem Deutschen übersetzt von Jana Prokaka

en/learning/courses/subjects/s01/m03/first-contact/a02.txt · Last modified: 2017/08/18 23:45 by kherrmann