This popular activity is an exercise in creative problem solving. Middle school and high school students will be challenged to design and construct their own wooden bridges, then enjoy the thrill of destructive testing. They will then calculate their bridge's efficiency to determine the best design. Bridge building supports a wide variety of curricula including geometry, physics, technology education, mathematics and general science. In addition to classroom competition, there are numerous state and nationwide competitions held annually which offer recognition and awards. Kit includes Balsa wood (15 pieces per student), adhesive and competition design parameters to conduct the competitive lab activity. Grades 6-12. Supplies 24 students.