• markers
• large sheets of paper, such as butcher paper
• quick drying epoxy glue (90-second or 5-minute)
• 1/4 x 1/4 inch balsa wood strips
• 1/8 inch balsa wood sheets
• (optional) dremel tool
• measuring rulers
• utility knives (for students, if possible, otherwise one for the teacher)
• newspaper, to protect table tops from glue
• scrapwood, to cut on (and protect the table tops)
• goggles, one per person
• scale, to weigh towers
• flat board, to set on top of a tower and on which to place weight for testing
• weights or many identical books, to use as mass/weight to test tower strength
• Structural Strength Testing Handout, one per student

Source for balsa wood and glue: http://www.specializedbalsa.com/