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[Audio] TREE Teaching Resources for Ecological Education CROATIA (Secondary School Mate Blažina Labin) - the importance of protecting water resources with practical activities such as analyzing local water samples and testing for microplastics. The leaders are professors Amneris Ružić Fornažar and Olivera Tadić, and the associates are professors Ljiljana Štingl, Gabriela Dundara, and Keti Stepčić. Hello, I am Olivera. Welcome to our Erasmus+ project in Labin. The main focus of our work is ecological education, especially water protection and the impact of microplastics. Our goal is to raise environmental awareness and develop practical skills in sustainability." This project is hosted by Secondary School Mate Blažina in Labin, Croatia. The leading professors are Amneris Ružić Fornažar and Olivera Tadić, with the support of colleagues Ljiljana Štingl, Gabriela Dundara, and Keti Stepčić. Together, we will guide you through fieldwork and laboratory activities..

[Audio] Importance of protecting water resources In this scenario, students will recognize the limited availability of drinking water, understand water cycles, and identify sources of pollution. The aim is to develop a systematic understanding of water protection and possible solutions to pollution. In the lab, teams will analyze their water samples. They will test parameters such as pH, hardness, dissolved oxygen, and the presence of various ions. They will also build simple filters to simulate purification and compare results before and after..

[Audio] Learning Scenario 1 Importance of protecting water resources Cognitive competencies Environmental awareness and a willingness to learn about sustainable development. Systems and risk analysis, skills to assess, interpret and understand both the need for change and the measures required Subject chemistry, mathematics, biology, physics, geography, environmental protection, english language. Technological competencies Management systems (waste, energy, water) Learning objective The students will be able to: Recognize that there is lots of water on Earth, but not much is used for drinking. Learn the processes that water goes through across the planet. Develop an understanding of why it is important to take care of our water resources. Clarify your ideas about water pollution. Classify point-source and non-point source water pollution causes and present possible solutions. Present a systematic view on water pollution..

[Audio] "puzzle"CALLED MICROPLASTICS The second scenario focuses on microplastics. Students will investigate how plastic pollution affects our environment, why it does not break down, and why it poses risks for marine life. This activity raises awareness of long-term pollution challenges. We will go out into the field in teams, collecting samples from different sources – streams, lakes, and the sea. Each team will receive equipment and instructions. This practical activity helps students connect theoretical knowledge with real-world examples..

[Audio] Learning Scenario 2 "puzzle„ CALLED MICROPLASTICS Cognitive competencies Environmental awareness and a willingness to learn about sustainable development. Systems and risk analysis, skills to assess, interpret and understand both the need for change and the measures required Subject chemistry, mathematics, biology, physics, geography, environmental protection, english language. Technological competencies Management systems (waste, energy, water) Learning objective The students will be able to: • Understand that plastic can be found everywhere • Understand that it never breaks down and is a long term problem • Identify why plastic can be hazardous for marine life Format introduction and explanation: frontal work, whole class Activity : Group work, whole class ANALYSIS OF RESULTS AND CONCLUSIONS: presentations and discussions, whole class Here are the most important LS2 definitions.

[Audio] In Labin, teams will work on two learning scenarios Learning ScenariO 1. Importance of protecting water resources Objectives: Recognize that there is a lot of water on Earth, but only a small part is drinkable. Learn about the processes water goes through on the planet. Develop an understanding of why it is important to protect water resources. Clarify ideas about water pollution. Distinguish between point-source and non-point-source pollution and suggest possible solutions. Present a systematic view of water pollution. Understand the importance of protecting natural waters. Learning Scenario 2. "puzzle„ CALLED MICROPLASTICS Objectives: Understand that plastic can be found everywhere. Realize that it never breaks down and is a long-term problem. Identify why plastic can be hazardous for marine life. We will work on two learning scenarios: protecting water resources and the puzzle of microplastics. At the end, each team will present their findings on posters. They will explain their results and conclusions, while other teams evaluate the presentations. This develops communication skills, critical thinking, and teamwork. Finally, we will discuss what we have learned together. The main goal is to reflect on how water resources and microplastics affect our daily lives, and how we can contribute to sustainability through education and action..

[Audio] WORK PLAN DAY 1 ACTIVITY TIME LEADER 1. INTRODUCTION TO THE MODULE Video presentations 15 min OLIVERA 2. WHAT WILL WE DO? Video presentations 5 min OLIVERA 3. DIVISION OF PARTICIPANTS INTO TEAMS (five teams) TEAM 1. SOURCE ADULT______ STUDENTS_______ TEAM 2. STREAM ADULT______ STUDENTS_______ TEAM 3. LAKE ADULT______ STUDENTS_______ TEAM 4. SEA ADULT______ STUDENTS_______ TEAM 5. MICROPLASTICS ADULT______ STUDENTS_______ 10 min KETI Olivera 4. DIVISION AND EXPLANATION OF WORKING MATERIALS; workbook, trail map and fieldwork equipment Team 1,2,3 & 4 - marked 1 liter bottles for water samples, thermometer Team 5. 50 cm ruler, tablespoon, glass container 15 min Olivera Amneris 5. GOING TO THE FIELD Field work according to the instructions in the workbook. 6 hours Ljiljana GABRIJELA OLIVERA 6. DISPOSAL OF WATER AND SAND SAMPLES TO THE SCHOOL LABORATORY.

[Audio] DAY 2 Laboratory WORK LEADER: OLIVERA with the help of others ACTIVITY you will need WORKBOOK & Water sample TIME 1. Determining the quality of natural water BEFORE AND AFTER PURIFICATION. Teams 1,2,3 &4 water analysis Glass 50 mL White and black paper Test tube with stopper 10 mL Conductometer pH meter KITs for Total hardness Dissolved oxygen Ammonia Nitrites Nitrates Chlorides Phosphates Sulphates water filter Plastic bottle 2L Scissors Coffee filter or porous cloth Elastic band Charcoal Sand (fine and coarse) Gravel or pebbles Charcoal Sand (fine and coarse) 60 min NOTE: It is important to organize the work of the team members in order to get everything done on time, for example, while some are analyzing a natural sample, others are preparing a filter and filtering the sample for reanalysis NOTE: The equipment listed is for one team. NOTE: If there are not enough devices or KITs, teams share them among themselves. Determining the quality of natural water BEFORE AND AFTER PURIFICATION..

[Audio] ACTIVITY you will need WORKBOOK & Sand sample TIME 2. Determining the amount of microplastic pollution - MP value Team 5. • Scale • Glass bottle with one liter of water • 300 g of salt • Metal sieve with the finest mesh you have. • Funnel • Filter paper • Magnifying glass, hand-held microscope, photo camera 60 min 3. Analysis of results and preparation of posters. FOR ONE TEAM Paper for poster, 700 x 1000 mm Scissors Tube of glue 60 min NOTE: If you need to print something, please contact the leader 4. TEAMS PRESENTATIONS Each team has 10 minutes for presentation and questions. Other teams evaluate the poster and presentation. Each team has 10 minutes for presentation and questions. Other teams evaluate the poster and presentation. 50 min 5. DISCUSSION AND CONCLUSION 40 min In the lab, students will measure microplastic particles by filtering samples, using salt separation, and observing particles with magnifying glasses or microscopes. This hands-on activity shows how tiny plastic particles are hidden in our environment. At the end, each team will present their findings on posters. They will explain their results and conclusions, while other teams evaluate the presentations. This develops communication skills, critical thinking, and teamwork. Finally, we will discuss what we have learned together. The main goal is to reflect on how water resources and microplastics affect our daily lives, and how we can contribute to sustainability through education and action..