Project Guide · Science Exploration
Borax Crystal Making
Grow crystals on a shaped pipe-cleaner form and observe how a supersaturated solution changes as it cools.
What You Will Create
A flexible, hands-on build.
Grow crystals on a shaped pipe-cleaner form and observe how a supersaturated solution changes as it cools. The guide can be adapted for families, classrooms, clubs, or drop-in learning spaces.
Science Exploration · Flexible group size · Easy to extend
Project Media
See the project take shape.
Project photo and video coming soon
Get Ready
Supplies and preparation
Supplies
Gather these materials
- Borax
- Hot water
- Heat-safe jars or cups
- Pipe cleaners
- String
- Pencils or craft sticks
- Measuring tools
Preparation
Before participants begin
Choose a well-ventilated, staff-managed mixing area. Label containers and prepare a location where jars can remain untouched while cooling.
An adult must handle hot water and mix the solution. Avoid skin and eye contact, do not taste materials, wash hands afterward, and keep the project away from food preparation areas.
Build Guide
Follow the steps
Test as you build. Small revisions are part of the process and help participants understand why the final design works.
1. Plan and prepare
Bend a pipe cleaner into a compact shape that fits inside the jar without touching the sides.
2. Build the foundation
Tie the shape to a string and suspend it from a pencil resting across the jar opening.
3. Add the main feature
With adult help, dissolve borax into hot water until additional powder no longer dissolves easily.
4. Test and adjust
Lower the shape into the solution and place the jar where it will not be disturbed.
5. Finish and reflect
After crystals form, lift the shape out, let it dry over a protected surface, and record observations.
Keep Exploring
Try another direction
Use one of these extensions after the first version is working.
- Compare crystals formed after different cooling times.
- Photograph the shape at regular intervals.
- Investigate why crystals collect on rough pipe-cleaner fibers.
LEARNING CONNECTIONS
Ideas within the build
Learning Connections
Ideas within the build
Solutions, saturation, cooling, crystal formation, observation, measurement, and scientific documentation.
Facilitator Note
Make the process visible
Ask participants to predict what will happen, test one change at a time, and explain what they revised. Photograph early and final versions so the improvement process becomes part of the project story.
Find another project.
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