Invent Iowa is occurring this week at Northstar Elementary in Knoxville. The annual event challenges kids to think creatively and invent an item to solve an everyday problem. Last year, four Northstar students were selected by the Belin Blank Center to move onto the state competition, and two students were finalists. Invent Iowa will run from 8:30-11am Wednesday and Friday at the Northstar gymnasium. The public is invited to take a look at the creations.