Happy December! I’m confusing myself with all my Christmas science investigations, experiments and STEM Challenges so thought I’d pull them all together into one place to make it a bit easier.

Christmas Advent Calendar

This free downloadable science advent calendar has an activity for each of the 12 days in the run up to Christmas.

Science Sparks Advent Calendar

Christmas Science Experiments

These Christmas lava lamps will always be one of my favourite Christmas science experiments.

Christmas lava lamps

Create easy Christmas shadow puppets. Different sized snowmen would be good for this one, or a giant tree with decorations.

This festive LEGO maze will keep the kids busy for hours. You could have a challenge to see who can build the best one, or even try and make a multi storey version.

Make frost appear on the outside of a can using the freezing power of ice and salt.

Do you know how to find the North Star?

How many Christmas food chains can you think of?

Make a festive optical illusion, will you use it to put decorations on a tree, a face on a snowman or something else?

Christmas Science in the Kitchen

Discover the best material for making a gingerbread house.

Gingerbread house

Do you love turkey and cranberry sauce? Or cheese and pickles, find out why some foods go together better than others with this funny food combination activity.

Find out how strong a candy cane is by hanging Christmas decorations on it.

Dissovle candy canes in different liquids.

Make gorgeous apple cider to learn about filtering.

filtering apples to make apple cider

Find out how long it takes a marshmallow to melt on your hot chocolate.

If you’ve got spare Christmas candy or fancy doing something fun with it, try one of my Christmas candy experiments.

Christmas STEM Challenges

Make a torch for Santa, help him find the North Star and more Santa STEM Challenges.

Build and test a raft for the reindeer!

Create a pulley in a box to help an elf lift his toys.

Elf Pulley

Design and build Christmas themed boats and test to see whether they sink or float.

Elf Science Activities

New for 2020 are 6 easy science activities the elf can bring! These need only very basic materials and I have made FREE experiment instruction sheets you can download.

My fizzy elf lab is great fun for kids of all ages!

Fizzy Elf Lab

I’ve also got some elf STEM challenges you can try, including building the elf a new shelf, saving a present with a parachute and making an elf zip line!

Make a new bell for the elf. What can you use to make it noiser?

Science Christmas Gift Ideas

If you’re looking for ideas for STEM related gifts for kids, I can help with that too!

Check our my STEM Christmas gift guide.

How about making some homemade science gifts or even a homemade science kit!

Science at home kit

More from around the web

This Rudolph Race is super cute from Steam Powered Family.

Royal Baloo has another easy way to make Rudolph fly.

These snowball shooters are great from The STEM Laboratory.

Fun a Day has some great magnetic jingle bells.

Christmas Science FREE printable Instructions

My Christmas science experiment printables are all FREE!

Save the Reindeer Elf on the Shelf
Elf Hot Chocolate
Expanding Sweets
Elf on the shelf STEM Skittles task
Santa STEM Challenges
The ultimate list of Christmas Science Experiments for kids. Huge collection of fun and festive #ChristmasScience experiments and investigations

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Originally posted at Science Sparks