Pluto's Demotion: What Will We Tell the Children?

August 30, 2006

Last week's decision to strip Pluto of its planet status came just as the sun was setting on summer break. The timing has sent teachers and textbook makers scrambling to figure out how to break the news to returning students.

Tom Stanton is communications director for the publisher McGraw-Hill Education. He said the company won't be rushing new textbooks into print to accommodate Pluto's demotion. But within weeks the company's Web-based lesson plans will reflect the change.

It's about time, says one Pasadena, California, educator.

Told You So

Leslie Stotlar is a middle and high school teacher at Marshall Fundamental Secondary School.

She says her students knew all along that Pluto wasn't like the other planets. And they've even tried to tell that to the International Astronomical Union (IAU), the body that rejected Pluto.

For about five years Stotlar has been assigning her students to research Pluto and make a case for its planethood—or its demotion—in front of the class.

At the end of the presentations, her classes take a vote. More often than not, the kids decided to give little Pluto the boot.

"They saw the terrestrial planets near the sun and the gas planets outside," and Pluto didn't really fit in, Stotlar said.

"They also saw how the other orbits were on the same plane and Pluto's wasn't," she added. "And they could see Pluto was smaller than our own moon. For seventh and eighth graders, size does matter."

She says at least one of her classes submitted its findings on IAU's Web site.

"My class sent a letter that Pluto shouldn't be a planet any more," Stotlar said. "I actually ran into a few of them a few weeks ago. They were so jazzed that they were right and Pluto was not a planet. They felt they had made a contribution to science."

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