. >> first-grade teacher andrea arguello wanted the students to learn about two subjects that don't usually go together -- art and recycling. >> and then these color ones, like, some of these are from the cafeteria bottles. and then the green ones are mainly from, like, the sodas, sprites. >> the book "bottlecap little bottlecap" gave the teacher the idea to create the mural. >> the brown ones are from chocolate milk. these big ones, the big yellow ones, are from coffee. the white ones are from, like, water. you can see the transparent ones. the oranange ones are from orange juice. and that's pretty much it. >> so, it took about 300 students. it was october through march we collected... >> the bottle caps for the "starry night" mural. >> and it took one month to make the mural. >> the picture needed about 7,000 bottle caps, so the kids began collecting. >> teachers, students, some people from maria's deli -- a lot of people helped. >> we put a little sign that said, "please help us collect bottle caps for the 'starry night' mural." >> this is incredible. i never imagined such a tremendous i