MINNESOTA CHILDREN'S MUSEUM

"Sid the Science Kid: The Super-Duper Exhibit" recently opened for experimental fun. The PBS Kids television comes to life and lets kids go on a scientific adventure. Give Sid's pals a ride on a skate board and learn about inertia. Investigate everyday science questions with activities using tools and simple machines. (9 a.m.-8 p.m. Fri.-Sat.; 9 a.m.-5 p.m. Sun. $10-$13. 10 W. 7th St., St. Paul. 651-225-6000.)

INTERNATIONAL MOTORCYCLE SHOW

Whether you're a rider who needs speed or one who likes to cruise, there's a bike at this show for you. Hundreds of scooters, dirt and street bikes and other vehicles will be on display. Also check out seminars, interactive entertainment and the latest in gear and accessories. (3-8 p.m. Fri.; 10 a.m.-8 p.m. Sat.; 10 a.m.-5 p.m. Sun. $6-$15. Minneapolis Convention Center, 1301 2nd Av. S., Mpls. www.motorcycleshows.com/minneapolis.)

MELISSA WALKER