Kids of all ages love science experiments, and learning along with your child is a great way to spend quality time together.
If you’re looking for a creative experiment with ingredients you can find around the house, making a rainbow jar is a fun choice!
Rainbow jars introduce young children to the basics of chemistry. They are a hands-on way to help kids understand how different ingredients interact with each other.
What You’ll Need
To start this experiment, first gather your supplies. You don’t need a lot of fancy materials. Most of these items can be found at home or your local grocery store.
You will need:
- Food coloring (red, blue, and green)
- A clear glass jar with a secure lid
- ¼ cup honey
- ¼ cup blue dish soap
- ¼ cup water
- ¼ cup rubbing alcohol
- ¼ cup olive oil
- Extra jars for mixing
- Spoons for mixing
Instructions
- Squeeze one drop of red food coloring and one drop of blue food coloring into the cup of honey and stir it together. You will notice your liquid is now purple. Help your child pour the purple liquid into the glass jar.
- Add the dish soap on top of the purple liquid in the jar.
- Combine two drops of green food coloring to ¼ cup of water and mix carefully. When combined, pour the green liquid into your jar.
- When your colors are settled, pour the olive oil into the jar.
- Combine two drops of red food coloring with the rubbing alcohol and mix together.
- Pour this last liquid into your jar. And there you have it! A beautiful rainbow jar that can be displayed on a windowsill to let the light shine through.
What’s The Science Behind It?
The colors in the jar remain separated because of their different densities. The liquids with more density are poured into the bottom of the jar and those with less density are poured toward the top.
Foster Learning for All Ages & Abilities
Science experiments can be intimidating when you’re working with multiple children or a range of ages and abilities. With a little adaptation, this kid-friendly science experiment can be a fun activity for anyone!
Newborns & Infants
While little ones may not be able to directly participate, they sure can appreciate watching you and seeing the colors. Let babies watch from a safe distance as you move the jar. Describe the colors and movements so they can engage.
Toddlers
Toddlers love to help with activities like these. Encourage them to help you pour the pre-measured colors and ingredients or hand you various items. Ask them questions and narrate the process as you go along.
Preschoolers
These kids are a little more independent and ready to share what they know. Let them mix their own colors and guess what new colors they’ll make when they blend. You can have them describe the process as they go along, such as what colors they see.
Benefits of Kid-Friendly Science Experiments
Science experiments, like this rainbow in a jar experiment, offer a whole bundle of benefits for young children. Kid-friendly science activities also engage your child’s brain, building core skills like problem-solving, curiosity, language, and more.
Encourages Curiosity
Children are natural scientists and love to explore cause and effect. Activities like rainbow jars give them a safe space to explore and test ideas. Along the way, they learn critical thinking and problem-solving skills that they’ll use throughout their life.
Supports Language Development
Experiments are full of opportunities for new words and concepts. That means it’s a great opportunity to strengthen vocabulary, conversation, and language skills.
Experiments allow for opportunities to learn new descriptive words like layer, float, dissolve, and swirl. The rainbow jar experiment, in particular, allows kids to practice their color words.
Builds Fine & Gross Motor Skills
The rainbow jar and other kid-friendly science experiments require pouring, scooping, shaking, and holding tools. These motions strengthen little muscles and help your child build fine motor skills and gross motor skills.
For children with disabilities or delays, these tasks can double as playful therapy.
Boosts Confidence & Independence
When kids see the results of their own actions—especially something as colorful and dramatic as a rainbow jar—they feel proud and capable. Making something with their own hand and proudly showing it off to their family and friends builds self-esteem they’ll carry well into their adult years.
Foster a Love of Learning
Perhaps most importantly, experiments like rainbow jars make learning fun. When children enjoy the process, they’re likely to stay curious and keep exploring the world around them.
Want More Support for Your Child’s Development?
Fun activities like this are a great way to encourage growth. If you’re looking for more fun activities and science experiments for kids, check out these resources from our early childhood experts.
- Make a Sensory Bin
- Yoga for Kids
- Make Your Own Maracas
- The Perfect Picnic for your Child
- Plant a Butterfly Garden
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