Update: To see a video of the Eco-Bot Challenge, click on the video link button below.
COLUMBUS, Ohio -- Using inch-long "Eco-Bots" made from the head of a toothbrush, a small vibrating motor and a watch battery, thousands of youths around the nation will devise ways to clean up a simulated toxic spill on Oct. 10 in the "Eco-Bot Challenge," the 2012 experiment selected for this year'sfor 4-H National Youth Science Day.
The experiment is designed to get the engineering juices flowing among the participants, said Bob Horton, Ohio 4-H specialist who created the challenge.
"We're getting them to think like engineers," said Horton, who is a professor and 4-H Extension specialist in STEM (science, technology, engineering and math) education. "There is a step-by-step process that engineers use, and we're mimicking that in this particular experiment."
Last year, more than 750 National Science Experiment events were held around the country. This year, one of the sites will be in Columbus at Ohio State University's, 2201 Fred Taylor Drive, from 10 a.m. to noon.
During the first hour, 100 seventh- and eighth-graders from "STEM Middle@Baldwin Road," the STEM academy housed in Reynoldsburg City Schools' Baldwin Road Junior High School, will take the Eco-Bot Challenge. Then they'll get to meet with Ohio State engineering students to share their results and talk about the ideas they came up with during the experiment.
The experiment works like this: Birdseed or rice is spread over a mat to depict a toxic spill on a beach. To prevent harm to human cleanup workers, authorities want to use Eco-Bots to attempt to clean up the spill. Eco-Bots are simple robots that move forward when they are turned on, but they can't be programmed remotely. Participants must find ways to restrict and redirect the Eco-Bots’ movements over the toxic spill to clean up as much of it as possible. (Download a three-minute video explaining the experiment here:.)
Horton got the idea for the experiment after seeing "BristleBots" designed by Windell Oskay of.
"I saw that and started thinking, what could we do with that? It's simple, inexpensive and easy to put together." Eventually, the Eco-Bot Challenge was born.
Horton and Sally McClaskey, Ohio 4-H Youth Development program coordinator, pilot-tested the experiment in recent months at 4-H camps and other summer programs, and were continually surprised at the inventiveness of participants.
"They might find that they're cleaning up only 30 percent of the spill in two minutes," Horton said. "So they say, 'Maybe I'll add on a blade, or maybe I'll add wings onto the side. Or maybe I'll even take the motor and battery and put it on top of the cup.' The amount of invention is endless.
"They use the materials available -- basically just straws and paper cups -- and take the challenge further than I could have imagined."
McClaskey said the experiment is a great illustration of how 4-H works.
"It's that hands-on experimenting," she said. "We're not just telling them about how you'd clean up a toxic spill, or tell them about how engineers work. They're going through the process themselves.
"Science experiments tend to be very prescriptive -- do this step, then this step, then this one. But this experiment is so inventive for kids. They come up with so much on their own -- so many different versions and adaptations, every time."
Horton has developed science curricula for Ohio 4-H since the 1990s. He also created the experiment used in the first 4-H National Youth Science Day Experiment in 2008, which involved examining the hydrogel in baby diapers to examine what makes them so absorbent.
"What we hope is that these types of challenges encourage the development of thinking and processing skills," Horton said. "The participants have to analyze, invent, problem-solve and collaborate. They're building those skill sets, which they will carry with them long after they've forgotten the experiment."
Teachers and others who work with youths can order the Eco-Bot Challenge kit from national 4-H through mid-2013 at, under Education Resources.
is the youth development arm of Ohio State University Extension, which is part of Ohio State's .
-30-Editor: Media are welcome to attend the Eco-Bot Challenge. The students will take the challenge from 10-11 a.m. Ohio State University President Gordon Gee will speak from 11-11:15 a.m. College of Engineering students will join the group from 11:15-11:45 a.m. The students will leave after lunch. To make arrangements, contact Martha Filipic at 614-292-9833 or.