Science Experiments for Kids – How to Grow Crystals

As a homeschooling mom I am always looking for fun science experiments for kids. We had so much fun with this experiment. I wanted to tell you how to grow crystals too!
How to grow Crystals - a really fun, easy-to-do science experiment for kids preschool, kindergarten, 1st grade, 2nd grade, 3rd grade, 4th grade for homeschool, science fair, and summer bucket list


This science experiments of kids will take 20 minutes and then it is just a matter of watching your crystals grow over the next 1-2 weeks. This science experiment is great for preschool – 8th grade!

Day 1 – How to Grow Crystals with Kids

Science Experiments for Kids
Put coal (or cut up sponges) on a pie plate. Spray the coal until it is moist, but there is not any extra water on the bottom.
How to Grow Crystals Mix together: 3 tablespoons uniodized salt, 3 tablespoons ammonia (smells really strong!), and 6 tablespoons bluing. Stir until the salt is dissolved.
getting ready to grow crystals
Pour the mixture evenly over the coal. Add a little water, stir, and pour the remaining mixture onto the coals. {You can see 2 year old Tinker Bell was fascinated with what was going on too!}
our fun homeschool science Put drops of food coloring over the coals. {Areas without food coloring will be white.} Sprinkle with 2 TAB more of salt.
adding food coloring to dye the crystals
Put your crystal garden somewhere where it will not be disturbed.

Day 2 Growing Crystals for Homeschool Science

crystal growth day 2

Day 3 Ultiamte Science Experiment for Kids - Growing Crystals

crystal growth day 3  On day 3, pour a mixture of 2TAB ammonia, 2 TAB water, and 2 TAB bluing in the bottom of the pan, careful not to disturb the delicate crystals.

Day 12 Growing Crystals Science Fun

crystal growth day 12 Our science experiment for kids is complete. We ended up with a plate full of large intricate crystals. I think I would add additional food coloring along the process next time as the white layers are covering the pretty colorful crystals.


Additional Science Resources:


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Beth Gorden
Beth Gorden

Beth Gorden is a homeschooling mother of six who strives to enjoy every moment with her kids through hands-on learning, crafts, new experiences, and lots of playing together. Beth is also the creator and author of 123 Homeschool 4 Me where she shares 1000+ free printables, creative homeschool lessons, crafts, and other fun ideas to help preschool and homeschooling families have fun while learning and exploring together.