Doug Blackwell was manipulating scientific gear in front of 25 attentive faces.

Doug Blackwell was manipulating scientific gear in front of 25 attentive faces.

He demonstrated how sand and other materials can filter pollutants to the assembled fourth-graders at West Sedona School.

All five fourth-grade classes from West Sedona and Big Park Community schools spent Wednesday morning, April 18, learning about a variety of water issues at five stations set up by the Sedona Water Advisory Committee.

Sedona Mayor Pud Colquitt kicked off the active learning event.

Groups of students went to Bill and Pam Klauser, of Sedona Recycling, where they learned how recycling can save water by reducing the need for new products.

With geologist Chris Catalano, they learned about ?Where Water Comes From.?

Lee Hetrick, of Arizona Water Company, gave a demonstration titled ?Where and How We Get Sedona?s Water.?

Blackwell?s station was ?Water Flow Model? and ?All the Water in the World.?

The students were given a math problem in which, given the total amount of water in the world, they had to calculate how much was drinkable.

Blackwell provided a graphic demonstration by displaying three vertical beakers of diminishing size until he finally adds a single drop to represent the earth?s drinkable water.

Area five was pizza and drinks ? water, of course.