Planning Your Tower
Design and build a small tower using blocks, cardboard, or marshmallows and toothpicks. Test stability, measure height, and improve your design.
About this activity
Design and build a small tower using blocks, cardboard, or marshmallows and toothpicks. Test stability, measure height, and improve your design.
What you need
Step by step
- 1
Step 1
Pick which materials you will use: blocks OR cardboard pieces OR marshmallows and toothpicks.
- 2
Step 2
Clear a flat workspace so your tower has room to stand.
- 3
Step 3
Lay down a cardboard base or placemat to protect the table.
- 4
Step 4
Set a height goal for your tower.
- 5
Step 5
Sketch a simple plan on paper showing the base shape and tower type.
- 6
Step 6
Gather the pieces you will need into small piles.
- 7
Step 7
Build a wide sturdy base using your chosen pieces.
- 8
Step 8
Add a strong second layer using a stable pattern like interlocking or triangles.
- 9
Step 9
Continue building upward toward your height goal while keeping layers aligned.
- 10
Step 10
Measure the tower height from the tabletop to the top with your ruler.
- 11
Step 11
Write the height number on your paper.
- 12
Step 12
Gently push the top with one finger to test the tower’s stability.
- 13
Step 13
Reinforce one weak spot using extra supports or tape.
- 14
Step 14
Measure the tower height again with your ruler.
- 15
Step 15
Share your finished creation on DIY.org
Fun facts
How do you plan and build a small tower with blocks, cardboard, or marshmallows and toothpicks?
Start by sketching a simple plan: base shape, materials, and target height. Build a wide, stable base first, then add levels while keeping weight centered. Test stability after each change by gently nudging or adding a small weight. Measure height with a ruler or tape and record results. If it leans or collapses, reinforce the base, use triangles for strength, or redistribute weight. Repeat testing and improve the design until the tower meets your goals.
What materials and tools do I need to plan and build a small tower?
Gather building pieces like wooden blocks, cardboard, or marshmallows and toothpicks. Add basic tools: ruler or tape measure, pencil and paper for planning, scissors or box cutter (adult use), tape or glue, and a tray or mat to contain pieces. Optional: small weights to test load, a spirit level, and a camera to document progress. Choose materials that match your child’s age and supervise any sharp or small items.
What ages is the Planning Your Tower activity suitable for?
This activity suits many ages: toddlers (3–5) enjoy stacking large blocks with close supervision; early elementary kids (5–8) can plan simple towers and measure height; older children (8–12) handle marshmallows and toothpicks, test stability, and refine designs; teens can explore advanced engineering ideas. Always supervise young children, especially with small or sharp pieces, and adapt complexity to each child’s fine motor skills and attention span.
What are safe tips and fun variations for the tower-building activity?
Safety: avoid giving marshmallows or small parts to very young children due to choking risk, supervise use of scissors and toothpicks, and keep work area tidy. Variations: timed builds, blindfolded partner builds, use only one shape, add weight tests, or design for wind resistance. Benefits include hands-on STEM learning, problem-solving, measurement practice, fine motor development, and resilience from iterative improvements. Record trials to compare what works best.
Watch & Learn
Need help?
If I don't have marshmallows and toothpicks, what can I use instead?
If marshmallows and toothpicks are hard to find, use small balls of clay or playdough as connectors with uncooked spaghetti or craft sticks to join pieces when you build the wide sturdy base and upper layers.
My tower keeps tipping when I gently push the top—what should I check and fix?
If the tower tips when you gently push the top, check that the wide sturdy base is level on your cardboard base or placemat and reinforce the weak spot by adding extra supports or tape to the base or second interlocking layer before realigning and measuring again with the ruler.
How can I adapt this activity for younger or older children?
For younger kids, use large blocks on a placemat and simplify the sketch and height goal, while older children can set taller goals, draw detailed plans with base shape and interlocking triangle layers, and track precise measurements with the ruler.
What are simple ways to extend or personalize the tower project after finishing the basic build?
To extend the project, decorate the cardboard base, experiment with different base shapes and interlocking patterns to compare which reaches the height goal best, and then photograph and share your finished creation on DIY.org.