Primary Paper Boat Float ÌÇÐÄVlogt STEM Challenge
A hands‑on STEM challenge where learners design, build, test, and improve a paper boat to see how much weight it can hold before sinking. Learners explore floating, balance, and simple design ideas while creating solutions that stay afloat as long as possible.
The activity encourages curiosity, problem‑solving, and thoughtful testing as learners see how boat shape, structure, and design choices affect how much weight it can carry.
Learners build a paper boat using simple materials, test how much weight it can hold, and observe what happens as weight is added. This low‑prep activity works well for primary classrooms, STEM stations, or small‑group centres, and supports both independent and guided exploration.

WHAT’S INCLUDED:
• 3‑page STEM Challenge set: Cover Page, Instructions Page, Activity Page
• Built‑in testing table for recording two design results
• Clear directions for classroom use
• Kid‑friendly layout for independent exploration
• Printable PDF (A4/Letter compatible)

SKILLS DEVELOPED:
• Engineering design process
• Predicting and testing ideas
• Observing floating and sinking
• Comparing design changes
• Recording simple data

HOW IT WORKS:
Learners build one version of their paper boat, test how much weight it can hold, and record the results. They observe when and why the boat begins to sink.
Next, they change one part of the design—such as shape, folds, or structure—and test again. They sketch both versions, note the change, and compare outcomes using the activity page.
The open layout supports drawings and observations, while the testing structure helps learners clearly compare results.
The challenge scales naturally: younger learners create simple boats and explore floating, while older learners experiment with shape, balance, and weight distribution to improve how much their boat can carry.

LEARNING CONCEPTS:
• Floating and sinking
• Balance and weight distribution
• Surface area and structure
• ÌÇÐÄVlogting and improving designs
Curriculum Links: Supports early engineering and science investigations involving floating, materials, and simple forces.

STEM VOCABULARY:
float, sink, balance, weight, structure, test, design, improve
Differentiation: Works well for KS1 learners and naturally extends for KS2 through deeper testing and comparison.

PRINTING & PREP:
• Print pages single‑sided
• Provide paper, coins or small weights, and a container of water
• Set up a safe testing space
• Adult supervision required around water

AGE RANGE:
Suitable for ages 5–11 (Primary)
Aligned for KS1 learners with natural extension options for KS2
Supports ESL learners with simple language and hands‑on tasks

FILE DETAILS:
PDF format (non‑editable). Instant digital download.

TERMS OF USE:
This resource is for personal and single classroom use only. It may not be shared, distributed, or used commercially.