Sadie McCallum’s own life led her to become an inventor. She’s 9, has cerebral palsy, for which she’s seen at Boston Children’s Hospital, and relies on a walker to get around. “It would be SO much easier if my walker was more like an all-terrain vehicle and could go over curbs or stairs,” she says.
This year, in third grade, Sadie took part in her school’s annual Invention Convention and designed and built the Amazing Curb Climber. She sketched the design, and her family helped her with the planning, drilling, sawing and assembly. The end product combined two of Sadie’s old walkers and six lawn mower wheels (three on either side) to create an all-terrain design, plus two smaller wheels in back. Her dad helped build a portable curb for testing and demo purposes.
The invention won first place for Best Use of a Wheel and second place for Kids’ Choice. Sadie went on to the regional Invention Convention, where she took the first place for the Special Needs Award as well as the Microsoft Technology Award.