The public is invited to take part in hands-on activities and view demonstrations at the 2014 Engineering EXPO from 9 a.m. to 2 p.m. Saturday, March 22 in the University of Maine’s New Balance Field House. The event is free and open to the public with a suggested $2 donation. Maine’s top engineering firms, schools, educators, government agencies and societies will offer activities and exhibits to encourage children to pursue careers in engineering during Maine Engineers Week. More than 1,500 people are expected to attend. The first 600 visitors will receive a free 2014 EXPO shirt.