Teacher Meredith Dyer has replaced about a-third of her classroom chairs with exercise balls.
She says balancing on the balls helps the kids stay focused and sit still.
It's also fun.
Dyer says she wouldn't want to sit in the hard chairs at Adelaide Elementary all day.
Dyer tells the Salt Lake Tribune it's up to parents whether they want to spend the ten bucks to buy the large, colorful balls.
