Copper Pipe Freezing Temps

INTERACTIVE STUDIO QUALITY 'OF A RIVER

Teaching Strategy: WebQuest

Discipline: Analytical Chemistry

Class IV Secondary School Address Grade II-Chemical

INTRODUCTION

"When our grandparents went there to swim, now follow signs prohibiting bathing

But how are our rivers? What does it mean that the river is polluted?

TASK

The goal of this activity is to equip the student to build a proper and complete analysis procedure for the monitoring of pollution parameters (Macrodescrittori) provided in the study the quality of a river.

In particular, we must ensure that the student is looking for the meaning of such analysis through the chemical-toxicological and origin of these compounds, follow the methods of sampling and instrumental analysis provided, and obtain the values \u200b\u200bcomparable with those officially provided.

START OF THE PROJECT

The teacher divides the class into groups

out the objectives of the project and assigns each group a different Macrodescrittore

Working Groups:

1 Group Macrodescrittore nitric nitrogen
2 Group Macrodescrittore ammonia nitrogen
3 Group Macrodescrittore BOD 5
4 Group Macrodescrittore COD
5 Group Macrodescrittore Total phosphorus
6 Group Macrodescrittore Escherichia coli
Macrodescrittore Group 7% O ₂ dissolved

The product of the project will be a lab report in which each group must:

Describe Macrodescrittore and its meaning in relation to the environmental status of a river

be sampled following the method provided, describing the procedure

Make a series of laboratory tests, according to the method indicated

Determine a sequence of measures with comparable data provided dall'ARPAV related

Describe and comment on the results, assuming a motivation on the values \u200b\u200bobtained

Roles within groups:

THE JOURNALIST

should devote further study and research of information on the description of the parameter macropollutants and its significance in the environmental review.

THE TECHNICAL

The project deals with the methods of sampling, the real purpose of the application.

THE CHEMICAL

Research and studies the test methods and instrumentation, in order to make the determination of the parameter indicated.

the deputy

In a control whether all data and information were considered compare data ARPAV with the final results in order aim to lay a comment on the values \u200b\u200bobtained to inform citizens.

RESOURCES

http://venus.unive.it/miche/cicli_ecosis/homepage.htm

http://www.uninsubria.it/uninsubria/allegati/pagine/5114/9.pdf

http://www.apat.gov.it/site/_files/Pubblicazioni/Metodi_bio_acque/metodi_corsi_acqua.pdf

http://www.acqueinterne.it/indicatori_qualita.htm

http://www.irsa.cnr.it/

http://www.arpa.veneto.it/acqua/htm/acque_superficiali_corsi.asp

ASSESSMENT

To assess the success or failure of the soft skills can provide a grid of observation, the teacher fill in during the show scheduled for each group.

addition to the assessment takes account of product required, and provides a final check on the general characteristics of the research, to review the jurisdiction of individual experience.