1. Students measured the quantity of nitrates in three bodies of water in a regional park: the Neris river, Dukšta streamlet, and Bradeliškės spring. 2. They collected water samples in bottles and used indicators to measure the nitrate levels, recording the results in a table. 3. The results showed similar nitrate quantities in the 10-25 ppm range for the Neris and spring, and 10-25 to 25-50 ppm for the streamlet, indicating the water is not suitable for drinking.

1. Educational lesson in regional park of Neris
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

2. Subject of experiment:
How much nitrates there are in regional park's water
pools: river, streamlet, spring.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

3. Place of experiment:
river Neris, streamlet Dūkšta , spring Bradeliškės
Dūkštos upelis
Neries upė
Bradeliškių šaltinis
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

4. Tools necessary
for experiment:
1. The bottles for
water.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

5. 2. Indicators to measure nitrates in water.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

6. No. Water pool's name Nitrates'
quantity
1. Neris
2. Dūkštos upelis
3. Bradeliškių šaltinis
3. Table to fill the data.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

7. The experiment's process:
1. We fill the bottle with
water.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

8. 2. We dip an indicator
into the bottle with
water and hold for 2
seconds.
For an indicator stick to
dry, we wait 30
seconds.
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

9. •
3. We take a scale of
nitrates' quantity and
check, which color
indicates quantity of
nitrates in water.
•
4. We fill the table
with data.
This project has been funded with support from the European Commission. This
publication/communication reflects the views only of the author, and the Commission cannot be held
responsible for any use which may be made of the information contained therein.

10. The table of experiment's data:
This project has been funded with support from the European Commission. This
publication/communication reflects the views only of the author, and the Commission cannot be held
responsible for any use which may be made of the information contained therein.
No. Water pool's name Nitrates' quantity (ppm)
1. Neris 10-25 10-25 10-25
2. Streamlet Dukšta 25-50 10-25 10-25
3. Spring of Bradeliškės 10-25 10-25 10-25

11. Conclusion of experiment:
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
1. 1. Nitrates' quantity in all investigated water pools is quite similar.
2. The investigated water pools of regional park's water is not suitable
to drink.In this water nitrates quantity is over the rate of suitable to
drink water's nitrates' quantity.(0-10 ppm).

12. The experiment is made by class 3 d
This project has been funded with support from the European Commission. This publication/communication reflects the views only of the
author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.