Celebrating 6 With a Science Party

Last week my big boy turned six and on Sunday, we mixed, fizzed and slimed the afternoon away with a science experiment birthday celebration with a few of his best kindergarten buddies.

kindergarten friends

This was my science-loving boy’s idea and I thought it was sweet that he only wanted his three closest friends from school there. It was our first year not having a huge party with all the kids he’s friends with, which I thought was nice for a smaller party for turning six. I still feel bad about all the friends that were left out, especially the ones at school who at some point found out they weren’t invited. Kids do their best to keep quiet about these things, but it still slips out. We’re not going to have a huge party every year, though, so what can you do? Would love to hear from readers with older kids about how this usually works.

I didn’t realize how popular science parties are until a Pinterest search clued me in. Even Evite had a “Mad Science” themed invitation. There are tons of science experiments out there to do with your kids, but I needed to make sure there would be mixing involved, since Reece really enjoys mixing things together to see what happens. We did a whole range of experiments, but here, I’ll just list the “must-dos” if you decide to try this party yourself!

science party making slime


I ordered disposable lab coats and colorful kid safety glasses from Amazon and they were a must. Not only did they protect the kids from messes and explosions, they looked like super cute little scientists and they enjoyed wearing them. Plus, they doubled as party favors.

Science Experiment #1: Coloring flowers

When the kids first showed up, I had little cups of colored water set up and gave them a white flower. They chose which color water to put their flower in and by the end of the party, the edges of the flowers had started to change color. The result was minimal after just a two hour party, but enough to see. This one is fun to do at home over a day or two to see how the flower picks up more color. You can even slice a flower stem in two, put it in two different colors to turn it two colors. The kids took their flower home as a favor.

Science Experiment #2: Making Slime

I found this easy slime recipe and it worked really well! The kids each got a turn mixing and the end result was really cool. After they’d played with it a bit, I divvied it up in reusable, small plastic containers I already had from a previous Green Chef order, but small Tupperware or Ziplock bags would work too. This was a fun favor and Emme played with her slime for quite awhile after all the party guests had left.

science party slime experiment

Science Experiment #3: Melting and Coloring Ice

When Reece saw a picture of this while I was researching experiment options, he really wanted to do it for his party. This was the messiest of the experiments and the reason why all the kids went home with green hands thanks to all the food coloring they used. They enjoyed it, though, and it was fun even for the adults to see how the salt made trails through the ice.

science party melting ice experiment

Science Experiment #4: Volcano

As typical as the volcano is, it’s a must-do for any science party and it’s an experiment I’d surprisingly never done before. I followed these volcano instructions, including making the dough. All the kids helped shape the dough around the empty sparkling water bottle we used. The eruption itself was cool, but not as big as I expected. We kept adding more water and baking soda to watch it some more, but I wasn’t very impressed with the result even though the kids thought it was kind of cool. If you know of a better recipe, go for that one.

science party volcano experiment

My science-loving boy and his friends had a blast at the party, as you can tell by their faces in these pictures. I’m so thankful for his preschool that instilled a love of exploration and learning in him, and I hope he never loses that. From Legos, to magnetic gears, to robots and bug catchers, Reece received everything he wanted and then some to satisfy his curiosity and desire to build and create.

Magnaformer gears STEM gift
These Magformer Gears are a great toy!

I love how true he is to his name’s meaning and hope he always approaches his interests with as much enthusiasm as he does now.

Chima Lego gift
Chima Lego FTW! Yes, he put this together by himself with minimal help.

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