

Primary Spaghetti Tower STEM Challenge
A hands‑on STEM challenge where learners design, build, test, and improve a spaghetti tower while exploring balance, height, stability, and simple engineering principles.
Learners build a tower using spaghetti and connectors, then test how tall and stable they can make it. This low‑prep activity is ideal for primary classrooms, home learning, STEM tubs, or small‑group centres.
WHAT’S INCLUDED:
• 3‑page STEM Challenge set: Cover Page, Instructions Page, Activity Page
• 9‑Point Engineering Graph for comparing two tower designs
• Clear directions for classrooms
• Kid‑friendly layout for independent exploration
• Printable PDF (A4/Letter compatible)
SKILLS DEVELOPED:
• Engineering design process
• Planning and sketching a tower
• Testing height and stability
• Comparing performance after design changes
• Recording results using a structured 9‑point graph
HOW IT WORKS:
Learners build one version of their spaghetti tower, test its height and stability, and record the results. Then they change one part of the design—such as the base shape, support angles, or connector placement—and test again. They sketch both versions, note the change, and compare results using the 9‑Point Engineering Graph. The open layout supports drawings, notes, and observations.
The challenge scales naturally: younger learners build simple upright towers, while older learners experiment with stronger bases, wider supports, and improved stability.
LEARNING CONCEPTS:
• Balance, height, and stability
• Force and load distribution
• Testing and comparing designs
• Improving designs based on results
Curriculum Links: Supports early engineering, structure, balance, and investigations involving height and stability.
STEM Vocabulary: balance, base, support, height, stability, design, test, improve
Differentiation: Works well for KS1 learners and naturally extends for KS2.
TEACHER BENEFITS:
• Clear instructions
• Minimal prep with easy‑to‑source materials
• Works for small groups, centres, early finishers, or whole‑class use
• Flexible materials allow easy adaptation
• Clear routines support independent work
PRINTING & PREP:
• Print pages single‑sided
• Provide spaghetti, tape, and small connectors (e.g., marshmallows or clay)
• Adult supervision recommended when using small materials
• Test towers in open areas away from breakables
AGE RANGE:
Suitable for ages 5–11 (Primary). Younger learners can participate with support.
Aligned for KS1 learners, with extension options for KS2.
Supports ESL learners with simple language and hands‑on tasks.
PERFECT FOR:
• STEM centres
• Classroom STEM tubs
• Early finishers
• Makerspace stations
• Home learning
• After‑school clubs
• Family STEM nights
FILE DETAILS:
• PDF format (non‑editable)
• Instant digital download
• No physical item shipped
TERMS OF USE:
For personal and single‑classroom use only. Not for resale, redistribution, or commercial use.
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