Here's Ellie and Mo testing a roller coaster they've made out of foam pipe insulation (cut in half, tape the ends together for a longer ride) and a marble.
I learned the idea from a 4th grade teacher, Diane Allen. (The note in the margin means, make sure I check with her to find out why her 4th graders made roller coasters in her classroom.)
This is a first draft, and apparently that art was sketched on Sept. 2.
The book comes out next Sept.
In the meantime, I'm working on picturebooks...
-- Ruth McNally Barshaw