Hands-on Activity Creative Engineering Design:
Paper Tower Design Challenge

Learning Objectives

After this activity, students should be able to:

• Identify ways to maximize limited supplies of paper to maximize tower height.  
• Identify which designs can and cannot withstand the self-weight of the paper tower as well as a lateral wind load.
• Work effectively in small teams to communicate, plan, build and test a paper tower.

Educational Standards

Each TeachEngineering lesson or activity is correlated to one or more K-12 science, technology, engineering or math (STEM) educational standards.

All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), a project of D2L (www.achievementstandards.org).

In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; within type by subtype, then by grade, etc.

NGSS: Next Generation Science Standards - Science

Common Core State Standards - Math

International Technology and Engineering Educators Association - Technology

Materials List

Each team needs:

• 3 sheets of paper (construction paper works well)
• 24 inches (60 cm) office tape (masking or Scotch tape)
• 1 pair of scissors
• Paper Towers Worksheet, one per student

For the entire class to share:

• white board and marker or laptop with projector (to record/compare tower heights)
• 1-meter stick/measuring tape
• (optional) Paper Towers PowerPoint Presentation
• (optional) electric fan

Worksheets and Attachments

Introduction/Motivation

Today, you will be working as civil engineering design teams to take on a design challenge to construct a model tower using only paper, tape, and scissors. Your team will be given a set amount of supplies and a time limit (constraints) to complete this design challenge: limited supplies — only paper, tape and scissors — in a limited amount of time (one class period). The tower must be as tall as you can make it. The tower also must be freestanding; it cannot be attached or secured to a table, the wall, the floor or any other piece of furniture.

Your task mirrors the challenges that engineers are given in the real world—with objectives, requirements, and constraints such as budgets, material limitations, and deadlines. An engineering team that can design a structure to meet the objectives with the fewest materials (hence, less cost), is favored over other teams that cannot utilize the given materials as effectively.

When you are brainstorming about your design approach in your teams, think about the real skyscrapers you have seen as inspiration, including the tallest buildings and towers you have ever seen. What are their shapes? What are their foundations like?

Procedure

Background

In this activity, students act as civil engineers as they design and build paper towers. They must pay particular attention to designing the tower to withstand the forces of high winds, a problem that students may not have considered in the construction of tall buildings.

Several solutions to this design challenge are more obvious than others, although students can definitely surprise you with unexpected designs that work quite well.

• Rolling several small tubes to attach to the bottom or a central tube of paper is a good design. The cylinder acts to allow the tower to have the wind go around the building. The narrower and slender the tower is at height the better it is able to withstand the "wind" because less surface exists for the wind to act upon.
• Another solution is a tripod-type design. While the majority of the paper is used to build up, toward the bottom, three tightly wound paper rolls extend down from the tower to the table at an angle. This gives the tower more resistance against toppling in the wind load.
• Another solution involves having a very wide base for the tower to sit on, like a foundation.

Before the Activity

• Gather materials. Separate out tape and paper so each team has two sets of 12-inch (30 cm) strips and 3 sheets of paper, respectively.
• Make copies of the Paper Towers Worksheet.
• (optional) Have the Paper Towers PowerPoint Presentation ready to show (you may also choose to save and show it as a Google Slides presentation).

With the Students

1. (10 min) Introduction to activity

1. (optional) Show the Paper Towers PowerPoint Presentation via PowerPoint or Google Slides on projector.
2. Read the Introduction/Motivation section aloud.
3. Emphasize the constraints: 
• Materials: one pair of scissors, 24 inches (60 cm) of tape, three sheets of paper.
• Time: one class period to finish.
• Other: tower must be freestanding and must withstand a “hurricane wind”

2. Divide the class into teams of three students each.

1. Distribute materials to each team, including one pair of scissors, 24 inches (60cm) of tape and three sheets of paper.

3. (15 min) Give teams 15 minutes to design and test different tower designs. The test includes having students step away from their tower so it is at arm's length and have them blow out a full breath to simulate a hurricane. A successful tower will not topple over. Make sure the tower is not secured to a table, the floor or any other piece of furniture or wall. Students should record their tower height and whether it withstood the “hurricane wind” on their worksheets. 

   

   

4. After 15 minutes, inform students that now they will construct and test their final design. Students are allowed to return their original materials to the teacher in exchange for another 24 inches (60cm) of tape and three more sheets of paper.
5. (10 min) Give students an additional 10 minutes of construction time.
6. (5 min) With 10 minutes left of the class, have students conduct their final test, measuring and recording the height of their final tower. Students should record their tower height and whether it withstood the “hurricane wind” on the white board/large Post It Note/laptop with projector. 
7. (5 min) during the last 5 minutes of class, have a quick class discussion about what worked and what didn’t work for their paper towers.

Vocabulary/Definitions

buckling: When a column fails by bending at some point in the height of the column, usually towards the midpoint caused by a vertical force.

civil engineering: The field of engineering pertaining to non-moving structures such as roads, sewers, towers, buildings and bridges.

constraint: A limitation or restriction.

design: A plan or drawing produced to show the look and function or workings of a building, garment, or other object before it is built or made.

lateral force: A force that impacts a structure horizontally (that is, wind and earthquakes).

load: A weight or source of pressure borne by someone or something.

Assessment

Pre-Activity Assessment

Opening Questions: In the introduction/motivation section, ask students about their observations of real skyscrapers. What are their shapes? What are their foundations like?

Activity Embedded (Formative) Assessment

Worksheet: Students fill out the Paper Towers Worksheet as they plan, build, test and improve their designs.

Post-Activity (Summative) Assessment

Class Debrief and Discussion: Have students discuss as a class what designs did and did not work and why. (Examples of successful design approaches included: triangular base, wide base, small tower surface area, tubes, etc. Examples of unsuccessful design approaches include: large flat surfaces for tower sides, small bases, etc.)

Making Sense Assessment: Have students reflect on the science concepts they explored and/or the science and engineering skills they used by completing the Making Sense Assessment.

Safety Issues

Students should be careful with the scissors.

Troubleshooting Tips

• If students are struggling, consider allowing more time or providing more materials.
• If students are struggling for design ideas, suggest they think about tall buildings they may have seen in cities or in their own towns that have cylindrical shapes or large foundations or triangular trusses for support. If necessary, suggest more specifics, such as the idea of rolling the paper for strength and/or using a triangular or wider base.

Activity Extensions

• Use an electric fan to simulate stronger “hurricane winds.” Set the fan to a given speed and place it three feet from the tower, then move closer until the tower falls.
• For advanced students, have students plot the height of the tower (independent) versus the distance between the fan and the tower (dependent); discuss any patterns.

References

Copyright

Contributors

Supporting Program

Acknowledgements

This curriculum was developed under National Science Foundation grant numbers 1941524 and 1941701. Any opinions, findings, and conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.