April 20 – 26, 2021

Oksana Okulova

Aim of the project: this project has several objectives, such as: 1. Raising students’ awareness of the causes and factors of carbon dioxide pollution and related human health problems 2. Improving students’ knowledge of NBS, analysis, research and practical application of knowledge to solve local problems (plant trees near the school and in the local forestry).

 Students watch videos and update knowledge about carbon dioxide, its properties (qualities) and effects on human health, greenhouse effect, photosynthesis.

Students work in groups of 3-5. In teams, students take a test in the Kahoot.

 They determine the concentration of carbon dioxide in the classroom (at the beginning of the lesson and at the end) and on the school grounds. The concentration of carbon dioxide is determined by the chemical method (students used syringes with a volume of 100 ml, beaker, 20 ml of 0.005% aqueous sodium carbonate solution with phenolphthalein). And use the Einstein laboratory. Students also determine the area of ​​the classroom to calculate whether the concentration of carbon dioxide meets the permissible sanitary norms. Carbon dioxide is not considered a toxic substance. However, if the volume fraction of this gas in the air reaches 0.25%, a person begins to feel short of breath. Today, a person spends a lot of time indoors: schoolchildren and students in classes and classrooms with a capacity of more than 20 people, adults spend up to eight or more working hours at work. In a room where there are many people, the air is heavy. There is a feeling that there is not enough oxygen. However, in reality this is not the case at all. The concentration of oxygen in the air is normal, and the concentration of carbon dioxide is significantly increased.