Make a Christmas tree out of slime for Christmas science with our easy Christmas slime recipe! Slime is a pretty fun activity for kids and it’s so easy to make. Try this fun Christmas tree slime for the holidays and learn how to make homemade slime year round!

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Make Homemade Slime For Christmas

Christmas slime is an easy holiday slime for the kids to try out this season. Plus it’s fun to whip up together with really simple ingredients that you can pick up at the grocery store too. You can have fun turning this Christmas tree slime into a tree shape with the help of a special prop!

Slime making is a serious matter with kids, and I know everyone is looking for the best slime recipes around. Our Christmas Tree Slime  is yet another AMAZING slime recipe we can show you how to make.

Oh and slime is science too, so don’t miss the great information on the science behind this easy slime below. Watch our awesome slime videos and see how easy it is to make the best Christmas slime!

How To Decorate A Slime Christmas Tree

Decorate a slime tree with this fun green Christmas slime! Confetti, glitter, pompoms, tiny plastic ornaments, and beads make perfect decorations to add to your slime making activity this holiday! Can you guess the fun addition to make the Christmas tree slime look like a Christmas tree?

This holiday slime activity was updated to add a foam cone that the slime can ooze down. The first time we made this Christmas tree homemade slime, we just enjoyed decorating as is! My little one couldn’t believe that this was actually a science experiment for kids because it was so neat and cool!

ALSO CHECK OUT: CHRISTMAS SLIME RECIPES

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Basic Slime Recipes

Our easy, “how to make” slime recipes show you how to master slime in 5 minutes or less! We have spent years tinkering with our favorite basic slime recipes to make sure you can make the BEST slime every time!

We believe slime shouldn’t be disappointing or frustrating! That’s why we want to take the guesswork out of making slime!

  • Discover the best slime ingredients and get the right slime supplies the first time!
  • Make easy slime recipes that really work!
  • Achieve awesome slimy consistency the kids’ love!

Which Slime Recipe To Use?

We have several basic slime recipes that can all be used for making Christmas slime. You decide which one works best for you depending on what slime activator you want to use. This allows for some flexibility depending on where you live in the world! Not everyone has access to the same ingredients!

Each of the basic slime recipes below have the full step by step photos, directions, and even videos to help you along the way!

This Christmas tree slime further down uses our liquid starch slime recipe.

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Helpful Slime Resources To Get Your Started

These are the best resources to look through before, during, and after making your awesome Christmas slime! We talk more about the slime science below too.

A Bit Of Slime Science

We always like to include a bit of homemade slime science around here! Slime is an excellent chemistry demonstration and kids love it too! Mixtures, substances, polymers, cross-linking, states of matter, elasticity, and viscosity are just a few of the science concepts that can be explored with homemade slime!

What’s slime science all about? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl acetate) glue and forms this cool stretchy substance. This is called cross-linking!

The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…

You add the borate ions to the mixture,  and it then starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubbery like slime! Slime is a polymer.

Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms, the tangled molecule strands are much like the clump of spaghetti!

Is slime a liquid or solid?

We call it a non-Newtonian fluid because it’s a little bit of both! Experiment with making the slime more or less viscous with varying amounts of foam beads. Can you change the density?

Did you know that slime aligns with the Next Generation Science Standards (NGSS)?

It does and you can use slime making to explore states of matter and its interactions. Find out more below…

Get your FREE printable Christmas STEM activities guide!

START HERE: Grab the FREE STEM Christmas Activities List!

Christmas Tree Slime Recipe

Supplies:

  • 1/2 cup of PVA Washable School Clear Glue
  • 1/2 cup of water
  • Food Coloring (we used green) and Glitter
  • 1/4-1/2 Cup of Liquid Starch

Instructions:

STEP 1:  In a bowl add 1/2 cup water and 1/2 cup of glue, and mix well to combine completely.

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STEP 2: Now’s the time to add green color!

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Mix the food coloring into the glue and water mixture.

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STEP 3: Pour in 1/4 cup of liquid starch. You will see the slime immediately start to form. Keep stirring until you have a gooey blob of slime. The liquid should be gone!

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STEP 4:  Now time to start kneading your slime! It will appear stringy at first but just work it around with your hands and you will notice the consistency changes. You can also put it in a clean container and set it aside for 3 minutes, and you will also notice the change in consistency! 

SLIME MAKING TIP:   We always recommend kneading your slime well after mixing. Kneading the slime really helps to improve it’s consistency. The trick with liquid starch slime is to put a few drops of the liquid starch onto your hands before picking up the slime.

You can knead the slime in the bowl before you pick it up as well. This slime is stretchy but can be stickier. However, keep in mind that although adding more liquid starch reduces the stickiness, and it will eventually create a stiffer slime.

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Now Time To Decorate Your Christmas Tree

Get ready for the best part, decorating your Christmas tree homemade slime! Gather your supplies and get started…

We had so much fun decorating our homemade Christmas tree slime and those little hands worked hard pushing the ornaments into the slime and even picking them up. (Sneaky fine motor skills too!)

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NEW! Add a styrofoam cone shape to your play as we did in our videos! It makes the tree decorating even more fun as your slime oozes over the cone in a tree shape.

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Christmas tree slime with a foam cone - easy experiments for kidsPin

More Fun Slime Recipes To Try

Printable Christmas STEM Project Pack

200+ PAGES OF HOLIDAY THEME STEAM, STEM, Science, and Art!

  • 25+ Christmas theme science and STEM activities with printable sheets, instructions, and useful information all using easy-to-source materials perfect for limited-time needs. Includes a holiday theme engineering pack with fun, problem-based challenges for kids to solve! NEW observation sheets included.
  • Try a Santa’s Letter airplane challenge or take the gingerbread house-building challenge! 
  • Explore the five senses with a specially designed Santa’s Lab pack.
  • Try a mini nature study with your favorite type of Christmas tree.
  • Try your hand at building shapes with gumdrop structure challenge cards or build shapes with jingle bells. Or try the Christmas-themed paper chain challenge!
  • Christmas Screen-free Coding activities include algorithm games, binary code ornaments, and more!
  • Explore 6+ Christmas Art Projects with famous artist-inspired activities that combine art history, process art techniques, and more with simple to-do ideas. 

15 Comments

  1. Looks so slimy but I think it is so cool and also it is unique, so creative. Ill try to make one of this in this coming christmas. Try to check this alternative christmas trees here guys http://www.exploretalent.com/articles/extremely-cool-alternative-christmas-tree-ideas/ . What do you think about it?

  2. Hi! Thanks for all these great sensory ideas!! How long does the slime keep? I want to make it for my class a couple of days ahead of time-will it keep? Thanks.

  3. Slime keeps nicely for about a week in my opinion. Loosely covered. Flip it around every now and then and you should be fine.

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  6. Wondering if I do this as a class project, would we make one recipe per student, or is one batch enough for several students? Thanks.

  7. You can use one batch for 3-4 kids. The best thing is to grab some of those condiment cups from the dollar store. Makes just enough slime per person to still be fun!

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