Straw Towers Design Challenge Shahid Hussain eLearning and STEM Coordinator Download additional materials, handouts and more at: www.strawtowersdesignchallenge.wikispaces.com

Design Challenge You have been brought together as a team of civil engineers to construct the tallest, most stable tower. Your team’s design will be competing for a contract awarded by the city. Before you can be awarded the contract, however, you must develop a prototype of the tower you intend to build.

Your Task Burj Khalifa, UAE To work together as a team to create the tallest, most stable tower using: 50 straws per team 1 meter of tape 1 pair of scissors

Objectives All students understand the importance of prototypes when building structures Most students able to identify the link between structure and stability Some students able to apply strategic design into their prototypes.

Time Intervals 4 minutes for research and development; brainstorming, talking, communicating, and sketching initial design. 8 minute intervals for construction. 3 minute discussion periods at the end to reflect on the activity. WWW and EBI

Example Planning Page Distribution of Supplies How will you divide up your supplies Stage 1: Base What shape will you use to construct your base? Stage 2: Middle How will you add height? Stage 3: Top How will you finish the Tower?

Rules For Tower Construction No talking during the building phases. No taping structure to the floor or table. Tower must be free standing upon completion. You can’t hold it up! Each structure will be measured from the base to the highest free standing point. Each group can ask 2 questions during the building process pertaining to the actual design, process, or rules.

Conclusion WWW (What Went Well) EBI (Even Better if)

Alternative Materials Students may “purchase” alternative or additional building materials during the planning phase. Such as: Design ideas (example blueprints or design ideas printed out for viewing) Flexible straws Cut straws or pieces of straws Bases (paper, poster-board, cardboard)

Teaching Strategies Lots of open space Push tables or desks out of the way Use the gym, media center or hallway Kitchen or egg timer for time increments Create penalties for talking during build phase Could include loss of resources, points, or height deductions Music

Alternate Teaching Strategies Foreperson Guide the team in making decisions. Oversee the building of the tower. Engineer 1 Draw Straw Tower Blueprints. Build the tower according to the blueprints. Engineer 2 Build the tower according to the blueprints Financial Manager Inventory materials. Distribute and monitor use of materials. Job Descriptions Describes a specific job for each team member in order to utilize time more efficiently and to prevent arguments.

Predictable Complications Grouping Misuse of the resources i.e., scissors Students not following design plans Parents/Teacher’s Assistant Espionage/Sabotage; can groups copy or steal ideas from one another? Rushing Giving up

Engineering Design Process Problem Describe the problem. Research Discuss what you know about structures and towers. Brainstorm Discuss ways to create the tallest tower and sketch a diagram. Choose the best solution. Build it! Get your supplies and start working. Test it! Is it freestanding? Is it the tallest? Communicate What did you learn? Redesign What changes would you make?

Conclusion This activity can be used to teach a variety of curriculum, group dynamics, communication skills, as well as the design and engineering process! This is a fun hands-on activity that students of all ages find engaging and challenging! All of the materials are inexpensive and/or readily available to teachers on any budget! Hence, Science on a Shoestring!