The bridge building project is a hands-on, individualized activity that may be geared to various grade levels to promote interest in science, math and tech ed. Contents of Kit: • Building materials for 24 bridges, including 360 pieces of 3/32" x 3/32" x 24" Basswood or 1/8" x 1/8" x 24" Balsa wood • 24 bottles of glue • Teacher’s guide contest information sheet