Tag: Heart

Zooming Hearts – a fun Valentine’s Day science activity kids love!

Zooming hearts science activity

This is such a cute and fun science activity for Valentine’s Day (or any day)! Can you make a paper heart zoom? If you’re sneaky with the dipping part, you can also make it look like a cool party trick and amaze your friends. Science magic!

Suitable for

This activity is fun for a bunch of age groups, from preschoolers to grade school kids. Jewel is 9 and Bumble Bee is 7 in the videos below – they can easily do all the elements without help, but they still found it fun!

How to make a heart zoom

Read More Zooming Hearts

Make cute salt crystal paper hearts, fun science craft idea for Valentines Day, Mother’s Day, or just because!

Salt Crystal Hearts Science Craft STEAM idea for kids

We’re becoming salt crystal obsessed in our house. They’re so much fun to make, for little and big kids alike! And they’re a great way to introduce science concepts like dissolving and evaporating, making a solution, and cubic crystals.

This time we made cute Salt Crystal Hearts, as part of Red Ted Art’s 31 Days of Love series. Click here to see our activity!

How to make salt crystal heart kids science craft

This will be added to our crystal science activities page, or you can also find more heart-themed science activities on our new Valentines Day science page, including:

Make an interlocking crystal hearts necklace! Fun science & craft activity for kids.

Make an interlocking crystal hearts necklace - fun science for kids

Have you tried making crystals yet? They’re so pretty! This is our fourth ‘crystal craft’ we’ve made so far. We’ve also made crystal flowers, crystal candy canes, and a (preschooler-friendly) crystal snowy tree. This is our first interlocking-hearts design though!

Suitable for

Making Borax crystals is a classic science experiment for school aged kids. I’d recommend it for 5-6 year olds and up. (Jewel was almost 6 years old here). Older kids could experiment with a few different designs and materials, and see which works best.

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Two interlocking crystal hearts

How to make a Borax crystal hearts necklace

We used:

  • Borax (which you can buy at the grocery story in the laundry aisle, or online here)
  • pipe cleaners (also called chenille stems)
  • ribbon or fishing line (optional)
  • scissors
  • boiling water
  • spoons
  • glass jars
  • pencils
  • safety glasses (we have these ones)

To make our crystal hearts, the first step is to create the interlocking hearts shape. Cut a pipe cleaner in half. Bring the two ends of one half together and twist, making a loop. Thread the other half through the loop, and then bring those two ends together and twist making a second loop that goes through the first one. Pinch each loops to make two interlocked heart shapes.

Creating two joining hearts with pipecleaners

We made two sets of interlocking hearts – one for Jewel and one for me.

We decided to make ours into necklaces, so I tied a long piece of ribbon onto the end of mine. Jewel opted for blue pipe cleaners for her necklace. She twisting two pipe cleaners together to make an extra long one, and then twisting the ends of this around her hearts. (If you didn’t want to turn your hearts into a necklace, then I’d tie on something thin and slippery, like fishing line or floss, which the crystals won’t stick to and you can cut off later.)

The next step is to tie the ribbon / fishing wire / pipe cleaners to a pencil or chopstick, so the hearts can dangle below when your pencil is sitting on the rim of your glass jar. Measure it and check. (Don’t skip this step!) You need to make sure that your hearts dangle inside the glass jar, without touching the bottom or the sides. Make sure there’s a little bit of extra room too, as your hearts will become hard and slightly larger when they have crystals on them, and you want to make sure they don’t get stuck inside the jar. If in doubt, choose a larger container, or squish your hearts to make them smaller.

If you have safety glasses, put them on. It’s not strictly essential, but being safety concious around chemicals is a good habit. My girls love wearing their safety glasses whenever they get a chance – it makes it feel like a ‘real’ science activity! (If you don’t have any safety glasses, just make sure they don’t put any Borax in their eyes.)

With an adults help, fill your glass jars with boiling water. Add several tablespoons of Borax and stir until all the Borax is suspended (and looks dissolved). The actual quantity of Borax will depend on the volume of your jar – allow for about 3 tablespoons per 250ml of water.

(Please see safety notes at the bottom. Borax is not taste-safe. If you’ve happened to touch any of the Borax powder, please wash your hands. )

Adding Borax

Lower the hearts into the solution so that the pencil is sitting on top of the jar. Double check that your hearts aren’t touching the bottom or sides. Then place your jars in a safe spot where they won’t be disturbed.

Tie the hearts onto pencils and dangle into the Borax solution

Over the next 24 hours, your crystals will grow! You should be able to see some of the progress through the sides of the glass jar. It’s fascinating! The longer you leave them, the bigger they’ll grow, up to a point. We usually try to leave ours a few days.

Removing the crystal hearts from the Borax solution

Once the crystals have stopped growing (or your patience has run out), remove them from the solution and pat dry. You can rinse them off in fresh water if you want to. Untie your ribbon / pipe cleaner / fishing line, and admire your new crystal hearts!

Borax crystal hearts

There’s likely to be some crystals that have formed on the inside of the jar – these are pretty too!

Borax crystals formed inside the jar

Fun Science Fact

Borax (also known as sodium borate, sodium tetraborate or disodium tetraborate) is a naturally occurring mineral, that is mined from seasonal lakes. You don’t see it in crystal collections in museums though, because if it is allowed to fully dehydrate, it loses it’s structure and eventually crumbles into a white powder. Coincidentally it’s also, strangely enough, used as a detergent alternative and laundry booster, which is why you’ll likely be able to find it in your grocery store’s laundry aisle.

Water is made up of tiny molecules. If you mix Borax with water, some Borax can become ‘suspended’, which means that the water molecules can ‘hold’ onto it for a while. When water is very hot, the water molecules move further apart, and make room for the water molecules to ‘hold’ onto more of the Borax. As the water cools, the water molecules come closer together, and the water molecules can’t ‘hold’ the same quantity of Borax as they could before. This is called supersaturation. The extra Borax separates from the water molecules, and form crystals which stick to the pipe cleaners (and to the bottom of the jar).

Interconnected crystal hearts

The crystals formed are a mineral. They are hard. They are faceted. You can easily see their shape with your naked eye, but they are even more fascinating under a magnifying glass or a microscope.

Examining Borax cystals with a magnifying glass

Examining borax crystals

Your hearts will be ‘stuck’ together. If you’re game, you could try to break them apart, so the two crystal hearts are loosely entwined again. Some of the crystals may break off in this process though!

Joined crystal hearts

Two borax crystal hearts interlocked

Here’s Jewel, wearing her necklace. Doesn’t she look chuffed with her efforts!

Make your own interlocking crystal hearts necklace

Please note…

Be very careful with boiling water around young kids. Glass jars with boiling water inside will become too hot to touch.

Borax is a commonly used natural ingredient in grade school science experiments, and is safe for older kids to handle when used responsibly. However it is not edible, will irritate if put into eyes and is a mild skin irritant for people with sensitive skin.

With Borax being inedible, please make sure that your beautiful crystal hearts are stored out of reach of babies or toddlers.

All kids’ activities on this blog require attentive adult supervision. Parents and carers will need to judge whether a particular activity is appropriate their child’s age and skill level. Click here for more information.

Interlocking crystal hearts - science and craft STEM or STEAM project for kids

For more heart-themed science craft ideas, you might also like our DIY heart-shaped bubble wands. (What shape bubbles will they make??)

And for more crystal ideas, you might also like:

We also have a pinterest board dedicated to growing crystals and crystal crafts!

And you can always subscribe to our newsletter, to receive all our latest posts via email. We’d love to have you join our growing email community!

* This post contains affiliate link(s). An affiliate link means I may earn a referral fee or commission if you make a purchase through my link, without any extra cost to you. It helps to keep this little project afloat. Thank you so much for your support.

Fun science project for Valentine’s Day! How to make a heart-shaped bubble wand, and encourage some learning about bubble physics with play.

How to make heart shaped bubble wands, and some fun bubbles science for kids

We’ve been having  so much fun making bubble wands in different shapes lately, we thought we’d try again, with heart shaped bubble wands this time. Bubble fun!

Suitable for

I’ve yet to meet a child that doesn’t like bubbles! Babies and young toddlers are usually entranced with the bubbles themselves, rather than the implement used to make them, so I recommend this activity is for the preschooler and kindergarten / early primary school age group. Older kids might enjoy making their own versions. Either way, be sure to ask them to predict what shape the bubbles will be, and then let them experiment to find out if their hypothesis was correct!

This post contains affiliate links* to similar products. Thank you for your support.

How to make a Heart Shaped Bubble Wand (or two)

We used:

Materials to make heart shaped bubble wands

We made two heart bubble wands (because I have two daughters, and life is just easier when there’s once each), but you could make as many as you like. Once you have all your materials ready, it only takes a minute or two to make each one!

I started by creating a loop in one of the pipe cleaners, twisting to create a rough oval, leaving about 2 inches on the ends. I threaded on pony beads (purely for decorative purposes), and then wound the ends of the pipe cleaners tightly around a chopstick to act as a handle.

Adding pony beads and a chopstick handle

As an optional extra step, I added red tape around the handle to secure the pipe cleaners in place.

Adding tape to reinforce the handle

(We’ve made pipe cleaner bubble wands without the tape before, and they still work. It just means kids have to be a bit more gentle when waving the wands around, lest the pipe cleaner falls off the chopstick. If it does fall off however, it only takes a second to put it back on…)

And lastly, I bent the oval into a heart shape. And then I started again to make a second one!

DIY Heart Bubble Wands

How to make DIY heart shaped bubble wands, and some fun bubbles science for kids

Do they work? Do they create heart shaped bubbles?

That’s the big question! What’s your hypothesis? Now test and see if it’s true!

Fun Bubble Science Facts

Our (store-bought) bubble mix is made up of (mostly) soap and water. The soap makes the surface tension of water weaker than normal, and also forms a very thin skin (or film) that is flexible, perfect for making bubbles.

Bubbles are actually a film of soapy water with air trapped inside. There are two forces occurring here: the air inside the bubble is pushing out, whilst at the same time, the soapy film is pushing in. To balance these forces, the soapy film assumes the smallest surface area it can, and that shape (in the absence of other forces) just happens to be a sphere. Therefore, in the absence of other forces, bubbles that float in air are always round, regardless of the shape of the bubble wand used.

We’d done this experiment before, so Jewel used her prior knowledge to predict the bubbles would come out round, even though our bubble wand is heart shaped. This time however, she experimented with the force of her breath, and worked out that a slow gentle breath will create one or two bigger bubbles, whereas a more powerful fast breath will create a stream of smaller bubbles.

Blowing bubbles with the DIY heart bubble wand

Blowing bubbles with a homemade heart bubble wand

She also thought she would be extra tricky, and see if she could create a heart shaped bubble within the bubble wand itself. And look, she did it!

A heart shaped bubble!

Can you make a heart shaped bubble

It’s heart shaped on one plane and round on the other – how’s that for awesome!

Jewel is learning that science is fun, you can replicate a science experiment with slightly different variables to test how this changes the results, and bubbles are fun in all sorts of shapes and sizes!

DIY heart bubble wands

For more bubble science fun, you might like our other bubble science posts. Each post how to make a cool new DIY bubble wand, and you can also see the progression of the girls’ bubble knowledge over time. They’re playing AND they’re learning!

You can find more physics fun on our physics activities for kids page too.

And you might like to follow our  Go Science Kids and Fun Science for Kids boards on Pinterest.

And, of course, you can always subscribe to our newsletter, to receive all our latest activities straight in your Inbox. We’d love to have you join us!

* This post contains affiliate link(s) to similar products used. An affiliate link means I may earn a referral fee or commission if you make a purchase through this link, without any extra cost to you. It helps to keep this little project afloat. Thank you for your support.