WHITEHALL, Wis. -- A Gale-Ettrick-Trempealeau teacher and coach accused of burning seventh grade girls with dry ice makes his first appearance in court.

Brady Olson a high school chemistry teacher at G-E-T, is charged with felony child abuse and disorderly conduct.

Olson allegedly put dry ice on the girl's legs in late January, leaving burn marks.

Olson says he was trying to make things fun during practice. He also used the ice to blow the top off a garbage can and caused water to shoot from a bottle.

The G-E-T School District did their own investigation in January, as did the Galesville Police Department and Trempealeau County Sheriff's Department. All three found some of the girls had pink marks on their knees, but no criminal activity had taken place.

Olson, who has taught in the district for 16 years, is on paid administrative leave and will not return until there is a resolution in court, or until information on the charges is clarified for school officials.

Olson's attorney has called the charges "unwarranted and reckless" and says he expects Olson to be fully exonerated.

Olson is scheduled to appear in court again April 10.