Science of Melted
Crayon Suncatchers
Exploring Color, Heat & Light
At first glance, it looks like a pile of crayon shavings.
Tiny curls of red, blue, yellow, and green, scattered on a sheet of wax paper.
But when a little warmth is added, something extraordinary happens.
Solid becomes liquid.
Colors flow and meet.
And when the suncatcher is held up to a window, it glows.
Melted Crayon Suncatchers turn broken crayons into windows of colored light.
How Melted Crayon Suncatchers Work
Wax That Melts 🖍️
A crayon is made of wax mixed with color. When wax gets warm, it melts from a solid into a liquid. When it cools, it turns back into a solid.
Shavings that were separate flow together into one smooth sheet of color.
Color That Glows ✨
Thick crayon on paper blocks light. But a thin layer of melted wax lets some light shine through. The light picks up the crayon’s color on its way, so the suncatcher glows.
It is a beautiful reminder that color lives in light.
Setting It Up 🛠️
You need: old crayons with the paper peeled off, a handheld pencil sharpener or cheese grater, wax paper, an old towel or plain paper, and an iron (grown-ups only).
Make it: children shave crayons into small curls and sprinkle them on a sheet of wax paper. Lay a second sheet on top.
Melt it (grown-ups only): cover with the towel, then press with an iron on low heat for a few seconds, until the colors melt. Let it cool completely.
Hang it: cut it into a shape, punch a hole, add string, and hang it in a sunny window.
Safety: Keep the iron out of children’s reach, use low heat, and keep the room well ventilated.
What Happens When the Sun Shines Through? ☀️
On the table, the suncatcher looks waxy and a little dull. Hold it up to the window, and it comes alive.
But here’s the wonder:
The color doesn’t stay on the window.
On a sunny day, look at the floor or the wall nearby. Patches of colored light may appear, soft red, gold, and blue spots that move slowly as the sun moves across the sky.
Where two melted colors flowed together, a new color may glow: yellow and blue melting into green, red and yellow into orange.
Light becomes color.
Color becomes light.
The whole room becomes part of the experiment.
Light Through vs. Light Blocked 🪟
Some things let light pass. Some things stop it.
Transparent: light passes straight through, and you can see clearly. Window glass, clear water.
Translucent: some light passes through and softly glows. Wax paper, the suncatcher, a leaf held to the sun.
Opaque: light is blocked, so a shadow forms. Cardboard, a book, your hand.
Go on a hunt around the room. Hold each object up to the window and sort it: clear, glowing, or blocking?
Three words.
Three ways light can travel.
One window to test them all.
What the Suncatcher Can Tell Us 🔍
A suncatcher is not just a decoration.
It is a record of change.
It reveals information about:
What heat does to wax (solid → liquid → solid again)
Which colors flowed together and mixed
Where the layer is thick and blocks more light, and where it is thin and glows brighter
Where the sun is in the sky, by where its colored light lands
Check back at different times of day. Where did the colored light go?
The suncatcher becomes a clue.
Suncatchers in the Real World ⛪
Stained glass windows are giant suncatchers. People have been making them for hundreds of years, from pieces of colored glass joined together. When the sun shines through, pools of colored light spill across the floor, just like the crayon version.
Look for colored light in other places too: sun through a glass of juice, a colored bottle on a windowsill, or a translucent toy block.
The world becomes a living light experiment.
Why This Play Matters
Melted Crayon Suncatchers invite children to:
Watch a solid change into a liquid and back again
Discover that some materials let light through and others block it
Notice how colored light moves through a room across the day
Build science words: melt, cool, solid, liquid, translucent
Strengthen hands by peeling crayon paper, twisting a sharpener, and sprinkling shavings
It Makes Room for Every Body 🤲
Children can shave, crumble, or break crayons into small pieces, whichever their hands enjoy.
Sprinkling with fingers, a spoon, or a small cup all work.
Children who prefer distance from the iron can watch the melt through a window or wait for the finished piece.
The finished suncatcher offers calm, gentle visual input in a sunny spot.
Most importantly, it shifts perspective.
Color is no longer just something on paper.
It becomes something that melts.
Something that glows.
Something that fills a room with light.
That is science.
That is transformation unfolding.
That is awe.