filter vode

Dizajniranje malog filtera za prečišćavanje prljave vode

• Prikazati učenicima čašu “prljave vode” i pitati:
  „Da li biste ovo popili? Kako bismo mogli pročistiti ovu vodu?“

• Kratka diskusija o tome odakle dolazi zagađena voda (kućni otpad, industrija, kiša, poljoprivreda).

• Učenicima najaviti da će danas dizajnirati i testirati vlastiti filter za vodu.

Open Ended

Kako se zagađuje voda?

Open Ended

Da li ste nekad radili filter

Open Ended

What is one thing you learned about water filtration or water pollution that surprised you the most?

Open Ended

Why is it important to clean dirty water before using it, and what could happen if we don't?

Multiple Choice

Which of the following materials is most effective at removing odors and some chemicals from dirty water in a filter?

• Cotton wool

• Gravel

• Sand

• Activated carbon