Cardboard Unit Study and Meeting Plan
Ready to earn your Cardboard badge? Cardboard is one of the most common materials in our daily lives, yet most of us rarely stop to think about where it comes from or what it can do. In this unit study, participants will explore how cardboard is made, why it is designed the way it is, and how people use it for building, packaging, art, and problem-solving. Along the way, they will touch, test, build, and experiment with real materials. This study connects naturally with badges like Engineering, Recycling, and Art. Let’s get hands-on and see what cardboard can really do.
What Is Cardboard?
Cardboard is made from paper fibers that are pressed and layered together. Some cardboard is thin and flexible, while other types are thick and rigid. Corrugated cardboard has a wavy inner layer called fluting sandwiched between two flat sheets. That structure makes it lightweight but surprisingly strong.
Most boxes you receive in the mail are made of corrugated cardboard. Thinner cardboard is often used for cereal boxes, craft projects, and packaging inserts. By touching, bending, and tearing different types, you can feel how structure affects strength.
To Do: Gather at least three types of cardboard (thin boxboard, single-wall corrugated, and a thicker double wall corrugated). Touch, bend, and compare them. Sort them from weakest to strongest and explain why you think each one behaves the way it does.
Fulfills Preschool requirement #1
Make Something from Cardboard
One of the best ways to understand a material is to build with it. Cardboard is easy to cut, fold, tape, and decorate, which makes it perfect for creative projects. Because it is inexpensive and recyclable, it encourages experimentation without worrying about mistakes.
To Do: Create a cardboard mask, crown, animal, or small house using scissors, tape, and markers. Talk about which parts were easy to shape and which were harder.
Make a Cardboard Animal Mask
Supplies
- Thin cardboard (cereal box or cracker box)
- Scissors
- Crayons or markers
- Yarn or string
- Optional: glue stick, paper scraps, stickers
- Hole punch
- Mask templates printed and cut out
Instructions
- Examine the cardboard and describe it. Is it thick or thin? Bendable or stiff? Explain why this cardboard works well for making a mask.
- Choose one animal mask template. Trace the template onto the cardboard.
- Cut out the mask and eye holes with adult help if needed.
- Color the mask using crayons or markers. Add details such as a nose, mouth, or spots.
- Punch one hole on each side of the mask.
- Tie yarn through the holes so the mask can be worn.
Fulfills Preschool requirement #2
From Paper to Cardboard
Every cardboard box has a story that starts long before it shows up at your door. From giant rolls of paper to factories, cardboard goes through an interesting process before it becomes packaging. Exploring how it’s made helps explain why it’s such a common and useful material.
To Do: Watch a short video about how cardboard is produced such as “How is Cardboard Made?“ by Maddie Moat, or “How It’s Made – Cardboard”
Fulfills Level 2 requirement 2.*
The History of Cardboard
Cardboard as we know it developed in the late 1800s. Early boxes were made from paperboard, but the invention of corrugated cardboard made packaging lighter, cheaper, and more protective. As shipping and mail-order businesses grew, cardboard became the standard material for transporting goods.
Over time, cardboard replaced heavy wooden crates and became essential to global trade. Today, it is one of the most widely used packaging materials in the world.
To Do: Use the timeline information below to create your own timeline. Use our blog, 9 Fun Timeline Activities to Make History Come Alive, for a wide variety of timeline ideas from crafts to games.
Timeline:
- 1817 – The first commercially produced cardboard box, made from single cardboard sheets, was made in England by Sir Malcom Thornhill.
- 1840 – In France, silk makers helped popularize cardboard boxes by using them to transport Bombyx mori moth eggs from Japan.
- 1871 – Albert L. Jones patented single-sided corrugated paper, originally used to wrap and protect items such as bottles and chimney pipes.
- 1874 – Oliver Long improved Jones’s idea by adding liners to both sides, creating the foundation for modern corrugated board.
- 1890s – Corrugated boxes began replacing wooden crates for shipping because they were lighter, cheaper, and offered better protection.
- 1895 – The first corrugated box was manufactured in the United States.
- 1920s – Corrugated boxes became the leading shipping container, driven by the expansion of railroads and later the trucking industry.
- 1930s – Standardization efforts took shape as organizations like TAPPI (Technical Association of the Pulp and Paper Industry) developed testing methods.
- 1940s – Corrugated boxes were essential for transporting war supplies due to their lightweight, stackable, and durable design.
- 1950s – Rapid growth in consumer goods created a major increase in demand for corrugated packaging.
- 1960s – Flexographic printing advanced, making it possible to print branding and graphics directly onto corrugated surfaces.
- 1970s – Corrugated boxes became the primary form of packaging worldwide, supported by innovations in multi-color printing and stronger board grades.
- 1980s – Lightweighting technology improved, allowing boxes to maintain strength while using less material.
- 1990s – Recycling took center stage as municipalities expanded collection programs and corrugated board recycling rates climbed sharply.
- 2000s – Growth in global trade increased demand, and large paper and packaging companies expanded their operations worldwide.
- 2010s – The rise of e-commerce and direct-to-consumer brands dramatically boosted the need for corrugated packaging, especially custom-sized boxes.
- 2015–2020 – Digital printing technologies (such as EFI, HP PageWide, and Barberán presses) enabled high-quality graphics and short-run customization for brands.
- 2020s – Sustainability became the top focus, with emphasis on the circular economy, recyclable coatings, and reducing plastic use. Corrugated packaging remains one of the most recycled materials, with over 90% recovery in the U.S.
Fulfills Level 3 requirement 2.*
Shelter by Design
In emergencies, fast and affordable solutions can make a huge difference. Cardboard has been used in real disaster relief efforts to create shelters quickly and efficiently. Cardboard may seem simple, but it has proven to be a surprisingly smart material for temporary shelter. It is lightweight, inexpensive, easy to transport, and strong when layered or corrugated—making it perfect for fast, large-scale responses in emergencies. Around the world, cardboard shelters have been used after earthquakes, floods, and humanitarian crises when people needed safe housing immediately. Architect Shigeru Ban famously designed cardboard tube shelters for disaster victims in Japan, Rwanda, and after the 2011 earthquake in Christchurch, New Zealand. Organizations have also created flat-pack cardboard homes for refugee camps and homeless outreach programs because they can be assembled quickly without tools. It’s a powerful reminder that even the simplest materials, when used thoughtfully, can meet real needs in meaningful ways. Studying these designs shows how simple materials can be used in creative and life-changing ways.
To Do: Research a real-world example of cardboard used in emergency shelters or sustainable design. Build a small model that represents a structure using cardboard and explain how it meets a real need.
Fulfills Level 4 requirement #2
Supplies:
- Corrugated cardboard
- Cardboard tubes (optional)
- Paper
- Tape or glue
- Ruler
- Craft knife (adult supervision required)
- Scissors
Instructions:
- Research at least one real example of a cardboard shelter used in an emergency situation. Examples might include cardboard tube structures, cardboard origami structures, or even a cardboard geodesic dome.
- List three reasons cardboard is effective for temporary housing.
- Sketch a model shelter that includes walls, a roof, and an entrance.
- Measure and cut cardboard pieces based on your sketch.
- Assemble the model using tape or glue.
- Explain how your shelter design would help people in need.
- As a bonus, build a cardboard structure large enough and sturdy enough to actually go inside of.
Fulfills Level 4 requirement 2.*
Build a Cardboard Marble Maze
This activity is simple, inexpensive, and surprisingly addicting. Marble mazes combine creativity with physics. Slopes, turns, and obstacles all affect how a marble moves, and cardboard is a perfect material for testing and adjusting a design until it works just right.
Supplies:
- A cardboard box lid or shallow box
- Strips of cardboard (cut from scrap) at least 1″ high
- Scissors
- Glue or tape
- A marble or small ball
Instructions:
- Cut strips of cardboard into walls and barriers.
- Glue or tape them inside the box lid to form a maze path.
- Leave an entry and exit point, then test it out with your marble.
- Optional: Use a deeper lid or box and add challenges—like ramps, tunnels, bridges or even holes to avoid—for bonus engineering fun.
- Decorate as desired, then time each other completing the maze.
Full instructions can be found on Autodesk Instructibles.
Fulfills optional requirement #5
Cardboard Sculpture Design
Cardboard isn’t just for boxes—it can be used as an art medium. Sculpting with cardboard encourages creative problem-solving as you figure out how to make shapes, textures, and forms stand on their own.
Supplies:
- Cardboard scraps
- Tape or glue
- Scissors
Instructions:
- Design a free-standing sculpture made entirely from cardboard. This could be something recognizable like a 3D car or animal, or it can be purely artistic with uniuque shapes and design.
- Decide how your sculpture will balance and support itself.
- Cut and assemble the cardboard pieces.
- Test whether the sculpture stands on its own and revise if needed.
Fulfills optional requirement #4
Packaging Materials Comparison
Not all packaging materials are created equal. Cardboard, plastic, and foam each have strengths and weaknesses, and comparing them helps explain why certain materials are chosen for shipping, storage, and protection.
Supplies:
- Samples of cardboard, plastic, and foam packing materials.
Instructions:
- Examine a variety of packing materials including cardboard, foam and plastic.
- Create a comparison chart listing durability, cost, environmental impact, and reusability.
- Explain which material you think is best and why. Does your answer depend on what you are packaging?
Fulfills optional requirement #8
Cardboard Chair Engineering
Furniture usually looks solid and heavy, but even cardboard can support weight when it’s designed well. Building a cardboard chair pushes you to think about reinforcement, structure, and real-world engineering challenges.
Supplies:
- Heavy cardboard
- Tape
- Ruler
Instructions:
- Design a cardboard chair that can support your weight.
- Decide on the best type of cardboard to use for your design. How many different types do you need?
- Discuss the strength of different shapes and how they are used in engineering.
- Measure and plan all parts before cutting.
- Reinforce weak areas using folds, layers, or additional supports.
- Test the chair carefully with adult help. Reinforce as needed.
Fulfills optional requirement #7
Cardboard and the Environment
Cardboard is biodegradable and recyclable, making it one of the more environmentally friendly packaging materials. Recycling cardboard saves trees, reduces landfill waste, and uses less energy than producing new paper from raw materials.
To Do: Track how much cardboard your household uses in one week. Flatten and recycle what you can. Create a bar graph showing how many boxes or sheets were reused versus recycled.
Fulfills optional requirement #11
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