How to set up a Magic Potion Lab (with 3 Simple Tips)

How to set up a magic potion lab

Science Week articles on No Time for Flashcards

When friends and readers talk to me about Tinkerlab, they almost always ask me about science projects. And with that, process-based experiments like the following magic potion lab inevitably come up. Today I’m over on one of my favorite blogs for childhood projects, No Time for Flash Cards, talking about one of my 3-year old’s most requested activities.

Won’t you pop over and pay us a visit? 

How to set up a magic potion lab

For more creative science experiments that encourage children to think for themselves and develop critical thinking skills, click on over here for all of our posts, and sign up for the Tinkerlab newsletter.

 

A Scientific Experiment with Celery and Food Coloring

distinct color

How to set up a simple Scientific Experiment with Celery and Food Coloring :: Tinkerlab.comWhile I’m an art educator by trade, having small people pulling at my pants has turned me into a mini-alchemist who’s suddenly found herself reading books to her kids about Galileo (The Magic Schoolbus and the Science Fair Expedition) and brewing all sorts of concoctions in our kitchen (vinegar and baking soda, anyone?).

This project is easy to achieve with basic kitchen materials and it’s embedded with all sorts of opportunities for introducing the scientific method (in short: asking scientific questions, making predictions, and conducting an experiment).

 

science food coloring celery experiment

Materials

  • Celery with leafy tops
  • Clear glasses
  • Water
  • Food coloring

The Experiment

N poured water into three glasses. about 3/4 cup in each.

Then she added a few drops of food coloring — 5-8 drops, but who’s counting! — into the glasses and stirred with a piece of celery, which was left in the glass. And then we talked about what might happen if we left the celery in the colored water for a while.

science food coloring celery experiment

We oohed and ahhed over the lava-lamp effect of the food coloring as it hit the water.

We started off with red, yellow, and green, but N really wanted to mix colors and added blue and red to the green water (far right). We revisited our earlier discussion and made predictions about how the celery might change.

While waiting for something to happen, I chopped the celery heart off the bottom of the stalk and set up a printing activity.

N humored me by making a few prints and then asked if she could play with colored water. Totally!

While I only have one photo of this, it was probably the highlight of the afternoon.

capillary action

When we checked the celery a couple hours later, this is what it looked like. I put a leafy top next to it so you can see how subtle the change is. Hmmm. While I could see the change, I wasn’t sure it would make a big impact on my daughter. And then I realized that I should have just put the leafy parts in the water for a more dramatic result. Done!

A few hours later the blue/green had the most pronounced shift, but the red and yellow were visibly different too.

capillary action

Here’s a side-by-side comparison of the red and blue-green died celery tops, about 16 hours after the stalks had been sitting in the water. N seemed to appreciate the difference, but wasn’t nearly as impressed as her dad and I were.

The science behind the art

Plants need water to survive and they draw water up from their roots through their capillaries. The capillaries are hollow and act a lot like a straw. Adding color to the water helps us visualize this usually invisible process.

What are your favorite science projects or experiments?

 

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Diet Coke Mentos Experiment

diet coke and mentos explosion

My 4-year old and our neighbor enjoyed witnessing this explosive soda and Minty Mentos experiment. Have you tried it? It doen’t require a huge set-up, and the show is pretty awesome. I have to warn you that the explosion itself goes by quickly, so you might want to have an arsenal of soda containers on hand so you can conduct multiple experiments.

diet coke and mentos explosion

Ingredients for Diet Coke and Mentos Experiment

  • Diet Coke
  • Minty Mentos
Hee hee — pretty obvious, huh?

mentos and diet coke

Take the Mentos out of the wrapper.

mentos and diet coke experiment

Almost as soon as the Mentos hit the soda, the explosion begins, so f you’d like to try dropping more than one into the Soda bottle, make a paper tube and fill it with all your Mentos.

filling mentos into a tube

Take it outside. open the bottle, drop in one (or multiple) Mentos, and then step back!

kids mentos and diet coke

The explosion happened so fast that I was unable to capture it with my camera, so you’ll have to try this experiment for yourself and see how it works.

Experiment ideas

  • Try this with other types of soda. I read that diet soda is recommended because it’s less sticky than regular soda, but regular soda should work too. Compare the results of regular and Diet Coke.
  • The carbonation is what’s supposed to trigger the reaction: try this experiment with carbonated water. What happens?
  • Compare the results of fruit-flavored and mint-flavored Mentos.
  • What happens when you add other ingredients to the soda: salt, rock salt, sugar, baking soda, peanuts.

soda science experiment

The Science Bit

According to Wikipedia, “the numerous small pores on the candy’s surface catalyze the release of carbon dioxide(CO2) gas from the soda, resulting in the rapid expulsion of copious quantities of foam”

Taking this 100 Steps Further…

Eepybird.com (Entertainment for the Curious Mind) shared that  the exploding Diet Coke and Mentos Experiment was first introduced by University of Chicago chemistry professor, Lee Marek. The Eepybirds later recreated this experiment in a spectacular multi-bottle show on David Letterman.

 Your Turn!

So, are you ready to run out and pick up some soda and Mentos? Have you tried this experiment? What did your kids think about it?

Invisible Ink: A Citrus Painting Experiment

invisible ink citrus lemon lime kids

It’s summer and we’ve been doing a lot of citrus juicing in our home. Between my 4-year old expert juice squeezer and my almost 2-year old juice taster,  our simple and inexpensive juicer has been hard at work.

invisible ink science activity kids

While little Rainbow napped, Nutmeg and I gathered materials and set up the project. We talked about how we’d have to reveal the ink (lime juice) with the high heat of an iron or hair dryer, and she couldn’t wait to get started. She loves dangerous tools.

invisible ink citrus kids

We gathered our ingredients.

Here’s the full recipe:

5.0 from 2 reviews
Invisible Ink: A Citrus Painting Experiment
Author: 
Recipe type: Science
Prep time: 
Making time: 
Total time: 
 
Lemon juice is acidic, and acid weakens paper. When paper is heated, the acid burns and turns brown before the paper does.
Ingredients
  • Lemon or Lime Juice
  • Paper
  • Paint brush or Q-tip
  • Iron
Instructions
  1. Squeeze lemon or lime into a bowl.
  2. Paint the juice onto your paper with a paint brush or Q-tip.
  3. Wait for the paper to dry.
  4. Heat the paper with an iron, hair dryer, light bulb, or other heat source. Be careful that you don't hold it there to long, as it could burn the paper.
Notes
Experiment with other liquids: milk, orange juice, white wine, vinegar, and apple juice are good bets.

 

invisible ink citrus lemon lime kids

Just as we were getting started, baby R woke up to join us. She’s 22 months old now, and enjoyed the sensory experience of squeezing the limes with her bare hands, and then licking her fingers. According to my mom I used to eat lemons right off our tree, so this wasn’t too much of a surprise.

invisible ink lemon lime juice

The girls experimented with different colored papers and brushes. Afterwards I realized that Q-tips would have been perfect for this project, but we enjoyed the challenge of small watercolor brushes.

invisible ink citrus lemon lime kids

The papers dried pretty quickly on this warm day and we were able to get right to the fun part of burning the acid with heat. N’s grandma blows her hair dry every day, and N is obsessed with this tool. Obsessed. We ran the heat on the paper for about a minute with little success. I never blow dry my hair and have a cheap blow dryer for projects like this, and maybe that’s why? In any case, we decided to move on to the iron.

invisible ink citrus lemon lime kids

I folded a thick towel, placed the art on top of it, and she ironed away. In most cases an ironing board would have been better, but ours pulls awkwardly out of the wall and it’s too tricky to get the three of us around it safely. This worked perfectly and only took a few seconds to show its results.

invisible ink citrus lemon lime kids

N’s picture of her and her dad (he’s above her head, slightly visible in all his heated lime acid glory).

invisible ink citrus lemon lime kids

I really like how the abstracted images turned out and wished I had joined them once I saw how cool these looked. I usually join in when we’re creating and somehow forgot to on this round.

How about you? Do you find yourself doing projects with your kids, or are you in more of the facilitator mode? And what do you think about the new recipe card tool and header?

Egg Geodes Experiment

clean membranes from eggs

Today we’re experimenting with egg geodes. This experiment is set up to engage children in the steps of the scientific method, which could easily make this a fun and successful science fair project. Not only is the process of making these beautiful geodes engaging for kids, but the end-result has a huge wow-factor. Give yourself at least two-three days to achieve the greatest results.

Egg Geodes Inspiration

I was inspired by these egg geodes that I spotted on Martha Stewart and then followed this recipe by Melissa Howard who blogs at Those Northern Skies. If you enjoy this post, do click over and see what these two sites have to offer. The pictures alone are worth looking at.

egg geodes

Set up the Egg Geodes Experiment

Supplies

  • Eggs
  • Rock Salt
  • Sea Salt
  • Borax*
  • Other substance that could be tested for crystallization such as sugar, epsom salts, cream of tartar, baking soda, or alum*
  • Mini-muffin pan
  • Food Coloring
* Borax and alum are not food products, and using these ingredients with small children should be closely monitored, as ingestion can be fatal. Please use common sense and close supervision with such substances. My children were watched at all times and did not come in direct contact with borax in the process of this experiment.

clean membranes from eggsI tapped a knife around the top of the eggs to remove a bit of shell, and then emptied the eggs and cleaned them with water. Using a finger, it’s important to gently rub around the inside of the egg to remove the membrane because the membrane can discolor crystals as the form.

If you happen to have a mini-cupcake pan, it’s like they were made for this job.

add salt to water for geodesWe heated a pot of water (not quite boiling) and then poured 1/2 cup into a mug. We added 1/4 cup of kosher salt into the first mug and mixed it until it dissolved.

The kosher salt was stubborn and wouldn’t dissolve, so Nutmeg handed the mug to me for some rigorous mixing. Sill no luck.

We moved on to the next mug: 1/2 cup hot water + 1/4 cup sea salt. The sea salt dissolved quickly and then we added a bit more. The idea is to saturate the solution without putting in too much of the dry ingredient.

And then the final mug: 1/2 cup hot water + 1/4 cup borax. Dissolved.

geode chartWe added a coup;le drops of food coloring to each mug and then made a chart so we wouldn’t lose track.

Then we poured the liquid into our eggs. Each solution made just enough to pour into two eggs. Perfect!

And then you wait. 5  days for the liquid to mostly evaporate.

We couldn’t that long, but after 1 day salt crystals evaporated through the egg shell, and after 2 days our eggs looked like this…

egg geodes

egg geodes

Kosher Salt 

Through the process of diffusion, the salt actually passed through the permeable shell. Gorgeous, isn’t it?

egg geodes

Sea Salt

egg geodes borax

Borax

With opposite results of the salt-solutions, borax created the most sparkly, crystal-looking egg with crystals inside the egg and nothing on the outside.

And of course, things like this are irresistible to little hands. My toddler wanted to pick all the crystals off the shells, and I had to pull them away because not only will she break them into a gazillion pieces, but substances like borax are safe for looking, not for touching.

So, if this strikes your fancy, have fun testing some of the different soluble solids mentioned in the list above.

egg week

This is Day #4 of Egg Week, which I’m co-hosting with my talented arts education friend Melissa who runs the popular children’s art blog, The Chocolate Muffin Tree. Take a minute to hop over to The Chocolate Muffin Tree and see the egg surprise she has in store for us today.

And if you’re just catching up with us, here’s a look at what we’ve covered this week so far:

 

Are Black Markers Really Black? A Chromatography Lesson.

add water to marker on paper towel experiment

are black markers really black chromatographyWhat color is black? Is it one color or many colors combined to “look black”?

Black is the absence of all reflective colors, and when the three primary colors (red, yellow, and blue) are combined in just the right way, they give off the appearance of black.

We set off to find out more about the predominant colors in our black Crayola marker, and to do this we had to separate the colors. The chemical technique used to separate dyes, pigments, or colored chemicals is known as chromatography. 

This activity can take anywhere from 5 minutes to 25 minutes, depending on how much experimenting your child wants to do, and it’s appropriate for kids ages 2 and up. It’s so simple to do, and would be a natural addition to a morning or afternoon of drawing with markers.

Materials

  • White paper towels or white coffee filters
  • A Plate
  • Black marker/s
  • Water
  • Water Dropper

add water to black ink

We started by drawing a big quarter-sized dot on the paper towel, and then squeezed water on top of it. The colors that are released into the paper towel give you some clues as to what goes in to your black. In our case, there was a lot of green.

add water to marker on paper towel experimentAfter the black marker test, 3-year old N wanted to test the rest of her markers. She made a lot of predictions, and they all came out as expected (yellow appeared to be yellow and green was made from green dyes).

add water to marker on paper towel experiment

The red and pink, however, stumped her as they both released a pink color.

add water to marker on paper towel experiment ChromatographyAnd then there was a lot of fun in opening the paper towels up to reveal the levels of color that soaked through all the layers.

More Chromatography

For older kids, this slightly more advanced version of our kitchen experiment from Science Project Lab has some pretty cool results.

Kids will be amazed at the rainbow of colors released by leaves in this chromatography experiment shared over on TLC Family.

I like this coffee filter chromatography project from Kids Make Things.

Have you tried this experiment with your kids? Do you have a favorite paper towel/coffee filter project? What is the most challenging part of doing experiments with your kids?

How to…Invent a Recipe with Kids

invent a recipe with kids

How to Invent a Recipe with Kids | TinkerLab

My house smells like pancakes.

Which really means that it smells like cooking oil and caramelized sugar. Sort of a happy, greasy smell that has lingered for days.

Every afternoon, for the past three days, my 3 year old turns into a kitchen alchemist as she gathers ingredients and invents her own recipes.

She is in heaven. And it gets even better once we cook the cakes up and proudly serve them up to hungry family members.

Do you ever give your kids free reign over your kitchen?

Experiments like this set children up with a real-life science experiment that fosters creativity, inventiveness, and problem-solving skills. It’s not for the faint of heart and you have to be okay with a bit of a mess, but I think the trouble is well worth it for the amount of creative confidence it builds in children.

So, after three straight days of wild pancake combinations, I present five lessons learned on how to invent recipes with kids…

How to Invent a Recipe with Kids | TinkerLab

Lesson #1…Get Familiar with the Kitchen.

If your child doesn’t know where things are, give him a little tour. And start with a simple cooking project that introduces him to some key ingredients and tools for a favorite recipe (such as a mixing bowl, mixing spoon, measuring spoon/cup, flour, and oil).

We spend a lot of time cooking together and my oldest (N) knows her way around the kitchen. She can find the biggest mixing bowl in the house, all the baking ingredients are at kid-level (this will no doubt pose a problem once her little sister figures this out), and we have amazing little foldable step stools like these that give her access to the fridge (unless she wants the butter…but we do have a taller stool for that).

How to Invent a Recipe with Kids | TinkerLab

Lesson #2…Come up with a General Plan.

In our case, N has been making pancakes, pancakes, and more pancakes. We tend to make a lot of pancakes in our house anyway (they’re not just for the weekends), so she’s super-familiar with the key ingredients and general direction of what might taste good together. For example, she didn’t pour ketchup into the batter (although if she did, I probably would have let it happen).

Do you have a favorite family recipe that you could riff off of? 

To start, she collected a few ingredients (white flour, wheat flour, flax seeds, and blueberries), and added them to the bowl. I tried to step back and allow her to make decisions about quantities, but every now and then I’d throw out a suggestion to help guide the journey.

As you can imagine, her pancake recipe has WAY more than the usual tablespoon of sugar (see the next picture), but it turns out that sugary pancakes are absolutely delicious.

invent a recipe with kids

Lesson #3…Green Light all Ingredients.

Of course you want to be safe about this, as things like raw meat and raw eggs need special handling, but try to keep an open mind as your child selects her ingredients. One of N’s batters had chocolate chips, white chocolate chips, mango juice, dried cranberries and walnuts in it. It was amazing.

The most recent batch contained raspberries, strawberry cream cheese, diced apples, and goat cheese. It was a bit chunky, and I’m not so sure about the goat cheese, but we drafted a recipe in case they end up being the best one yet.

Which bring me to the next lesson…

How to Invent a Recipe with Kids | TinkerLab

Lesson #4…Write the Recipe Down.

This is validating and makes the whole game so much more fun. As N added ingredients, I tried my best to write them down. Some things were carefully measured and others weren’t, but it didn’t really matter. I’m thrilled to have documentation of her first recipes and I’m sure she’ll treasure them as she gets older.

How to Invent a Recipe with Kids | TinkerLab

Lesson #5…Embrace a Good Experiment.

As we cooked, I repeated multiple times that this is a grand experiment and that we’d be surprised one way or the other. We chatted about how it’s possible that not one person has ever made this exact recipe, and that chefs go through a similar process when they invent something new. Like scientists, they hypothesize (what ingredients might taste good together?), they experiment (let’s make this batter with yogurt and the next with sour cream), and they test (how does it taste? which batch do we like better? why?).

How to Invent a Recipe with Kids | TinkerLab

After one of our cooking sessions, my husband took the kids off on a run in the stroller. These two hot cakes were eaten before they left the driveway, which I suppose speaks to how delicious they came out.

How do you involve your kids in the kitchen? Have you tried letting them loose with ingredients? How did it go?

Magical Plastic Bag Experiment

leak proof plastic bag experiment

leak proof plastic bag experiment

Here’s a fun experiment that won’t take a lot of time, and it’s more than likely that you have all the “ingredients” around the house. I did this with my three and a half year old, and it would be relevant for preschoolers and elementary-age children.

The idea that we’re testing here is what will happen if we poke a sharp pencil through a plastic bag of water. Will the water leak through the holes? Will the water spill out? Or will the bag reseal around the pencils, keeping the water inside?

When my 3-year old daughter (N) and I tried this out, we worked with the question, “what will happen if we poke pencils into a bag full of water?” That seemed more age-appropriate and tangible for her.

leak proof plastic bag experiment

 Materials

  • Zip-up Bag
  • Water
  • Sharpened Pencils

We filled a zip-up bag about half-way with water and sealed it up. I held the bag high over a sink and N poked the pencils straight through the bag, from one side to the other. This is where my fancy photography skills come into play, holding the bag with one hand and snapping a photo with the other. Are you impressed?

Make sure that the pencil doesn’t keep traveling through the bag or you’ll have water leaks.

leak proof plastic bag experiment

Keep adding pencils until you’ve had enough. Before removing the pencils, take a moment to talk about what you see. When the pencil goes into the bag, the bag seems to magically seal itself around the pencil.

leak proof plastic bag experiment

When you’re done, remove the pencils over a sink.

The Science Behind the Experiment

Plastic bags are made out of polymers, chains of molecules that are flexible and give the bag its stretchiness. When the sharp pencil pokes through the bag, the stretchy plastic hugs around the pencil, creating a watertight seal around the pencil…and the bag doesn’t leak.

More Polymer Fun

Now I’m really excited for us to try poking skewers through balloons without popping them (QuestaCon Science Squad) and make our own kazoos from toilet paper rolls and plastic bags (Kazoologist). Steve Spangler Science is also an amazing place to go for projects like this, and you’ll find endless polymer-related ideas over there.

You could also make your own polymer by mixing up a batch of fun and flubbery Gak (a mixture of water, white glue, and borax). We’ve done this multiple times, and my kids can’t get enough of it.

Is this your first time here? Join the Tinkerlab network and be the first to know about simple art + science projects for kids, creativity tips, and simple ideas that will make your life more creative. Sign up for our newsletter here.

Is it Magnetic? Testing Objects for Magnetism.

magnets and water

How was your weekend? We took a mini-vacation to play in the snow and I enjoyed a little computer break along the way. I thought I could get online with my phone, but it turned out that the reception was horrible and I’ve been completely out-of-touch! It was probably a good thing, as I could really focus on my family and be as rested as possible when my one-year old woke up, inconsolable, for 2 hours in the middle of the night! I also want to formally thank my good friend Melissa from The Chocolate Muffin Tree who checked in to make sure I was okay! How lucky am I?

I’ve been on a science kick lately. Maybe because my 3-year old is completely self-serve in the art department or maybe because I’ve checked every science for kids book out of our local library? If you’re in the market for a great book of kids science experiments for ages 8 and up, I checked out The Science Explorer Out and about: Fantastic Science Experiments Your Family Can Do Anywhere (Science Explorer Out & about)and it’s phenomenal. It was written in 1997 and looks a little bit dated, but the concepts are solid and it stands the test of time. If you’ve ever been to San Francisco’s Exploratorium or if you’re familiar with their publications, you’ll feel connected to this book.

magnet and water experiment materials

Today’s experiment is similar to one we’ve done before with paper clips +magnets (Traveling Magnets), and this takes it up a notch with a few more magnet surprises and discoveries. Here’s what you’ll need…

Materials

  • Glass or vase of water. Thin glass works better than thick.
  • Pipe cleaners and/or paper clips
  • Strong magnets
  • Scissors
  • Small magnetic and non-magnetic objects

pipe cleaners in water experiment

Cut the pipe cleaners up and add them to the vase of water and mix them up so the pipe cleaners sink. Three-year old N loved doing this step herself.

Using your magnet/s try to pull the pipe cleaners up the side of the vase. Once they reach the top, you can retrieve them or drop them back in.

It’s like fishing!

testing magnets experiment kids

This opened up a conversation about what would stick to the magnets, so I pulled out a handful of small metal and non-metal objects for us to test.

Meanwhile, my 1-year old enjoyed stirring the water and fishing pipe cleaners out with her hands.

testing magnets experiment kids

N understood that the magnet would only stick to metal and quickly ruled out rubber bands and post-it notes from the “Is it magnetic?” list, but we also learned that the magnet wouldn’t stick to ALL metals.

And that was a surprise!

magnets on hardwood floor nails

One of the funnest surprises, however, was when a magnet fell onto the floor and stuck to a hidden nail! We dropped the rest of our magnets onto the floor and flicked them from nail to nail, watching them dance from floorboard to floorboard.

One more thought — I kept a close eye on my 17 month old throughout because our magnets are so tiny — just a thought that you might want to do the same or find some big magnets for the under 3 y.o. crowd.

What did your weekend look like? Have you been able to take a technology break? And have you had any fun magnet discoveries?

 

 

Yeast and Sugar Experiment

yeast experiment

yeast experimentI’ve been baking bread just about every day for the past three weeks (nothing too crazy since it’s all done in the bread maker), but last week my 3.5 year old and I got into a discussion about the properties of yeast.

We like to tinker and  experiment – big surprise, I know — and decided to see what would happen if we mixed yeast with warm water. N took this job very seriously, poured the water into a bowl, added a couple teaspoons of yeast, and waited a few patient minutes before she said, “it makes a brownish color.” True, and to make it bubble like it does in bread, we needed to activate it with sugar.

So we took about fifteen minutes to clear some space and set up what would become the Yeast + Sugar Experiment.

What’s so great about an experiment like this is that it’s easy to do with household materials, and it’s ripe for authentic child-generated questions and observations. When I asked what she thought would happen if we added sugar to the yeast she said, “I don’t know! Let’s mix them and find out!.” And when we finally attached the balloon to the bottle she wondered, “will it fill up all the way and blow off the bottle?”

yeast experimentWhat you’ll need

  • Sugar, 2 tablespoons
  • Active Dry Yeast, 1 packet or 2 1/4 tablespoons
  • Balloon
  • Warm water (105-115 degrees F, 40.5-46 degrees C)
  • Mixing bowl + funnel (we used a cocktail shaker instead)
  • Bottle that you can fit a balloon over

yeast and sugar experimentMix the yeast and sugar into the warm water and stir. I noticed that N was sniffing the concoction and asked her what it smelled like. She said “poop.” I could see what she was saying. Consider yourself warned.

Once it all dissolves, pour the mixture into the bottle and cover the bottle with the balloon.

yeast experimentAfter a few minutes you’ll be amazed by something like this!

yeast experimentN wanted to feel it as it filled with air. She noticed the balloon was getting bigger and wanted to know how big it would get.

yeast experimentMy handy-dandy ship captain sister (no joke — that’s her job!) was visiting, and put herself right to work as chief measurer.

yeast and sugar experimentOnce the bottle filled up completely, we moved the whole operation to the sink. The bubbles were slow-moving, and there was nothing to worry ourselves with, but N enjoyed pulling the balloon off and watching the foam slowly pour over the bottle’s top.

As we went through the process, I thought of a few fun extensions for older kids or those who want to take this further. You could play around with food coloring/liquid watercolors, have a few bottles going at once and compare the results of different sugar:yeast ratios, or compare the results of different water temperatures.

I found my recipe at The Exploratorium’s Science of Cooking series, where we also learned that as the yeast eats the sugar it makes carbon dioxide, which is essentially the same process that yeast goes through in our bread dough.

Mmmmm. I’m off to eat some whole wheat cranberry walnut oat bread. Toasted. With butter and Maldon salt. How do you like your bread? And have you played around with yeast concoctions?

This is shared on It’s Playtime

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Incredible Growing Gummy Bears

growing gummy bear.001

Here’s a fun experiment that hardly takes up any room, isn’t messy, and your kids will love it!

Here’s how we landed on this experiment: We stopped at the drug store for baby wipes, and 3.5 year old N bombarded me with five minutes of this… “Mom, stop! You have to see this. Mom, can you get me this light up candy cane/cup shaped like a fairy/snow globe. Wait!!! I really want it!” I normally adore her enthusiasm, but I have a short wick for the begging and pleading for random odds and ends. Pair that with a toddler who insists on standing in the shopping cart and you get the picture of me yearning for a hot cup of coffee and a copy of US Weekly! If you ever wondered if I’m actually raising independent thinkers, the answer is most definitely “yes!” So, on our way to the check-out, we walked down the candy aisle. Dumb move, I know, and N quickly managed to pull a bag of gumdrops off the display with a request to make gumdrop sculptures. 

Ack. She knows my weak spot for creative projects! Um, yes, we can buy the gumdrops for the sake of your growing mind. And with that, she also pulled down a pack of gummy bears. I remembered reading about a gummy bear experiment, and that’s how we ended up bringing these little jelly woodland creatures home with us.

The experiment is easy. We each had to eat one, of course, and then N chose a couple to add to the water. I asked her what she thought might happen to them after being submerged, and she said she didn’t know. After a couple hours we checked on them, and found them covered in tiny bubbles. We compared them to one of the dry originals, and the wet bears were a bit plumper!

I left N in the kitchen while I put her baby sister down for a nap, and returned to find her nibbling on one of the plump bears!! She had this to say, “I know I wasn’t supposed to eat the bear, but I had to also compare the way they taste to see if they tasted the same.” How could I be upset with that?

In all, we let the bears sit in water for three days, and you can see the size difference in this image. The gummies kept expanding and then finally seemed to fall apart. If you try this at home, and want to do a taste comparison, be sure to refrigerate your gummy bears so they don’t grow bacteria. Yikes!

The Science behind the Experiment

Gummy bears are made up of water, sugar, and gelatin. Like a sponge, gummy bears will absorb water but the gelatin keeps the bears from dissolving in the water.

 

Science Experiment: The Floating Egg

sink or float

As I hovered the egg over a jar of water, I asked my 3.5 year old, “Will it sink or float?”and it reminded me of Dave Letterman’s funny sketch, “Will it Float?” Have you seen it? This science experiment is really easy to set up + clean up, and the lesson learned on the density of water actually stuck with my 3-year old daughter long after the experiment was over. Fun and success!

The set up

  • One egg
  • Clear container: I used a wide jar, but a tall glass would work and you won’t need as much salt
  • Water
  • A few cups of salt
  • Spoon to mix the solution

Step #1:

Place the egg in plain water and talk about whether or not it floats. Pretty simple — it most definitely sinks!

Step #2:

Start adding salt to the water. We added ours little by little, and tested the solution by adding the egg back into the water. My 3 year old poured while my 1-year old mixed. I love these moments when they work and play side-by-side.

Finally, it floats!

Baby Rainbow loved this step, as she could finally reach the egg, and had some fun picking it up and dropping it back into the water where it “bounced.”

The Science behind the Experiment

The egg won’t float in regular water because it’s heavier than the water. But adding salt to the water makes the water more dense than the egg, and it floats! We have a book called “Let’s Visit Israel,” and my 3-year old will talk about this phenomena when we reach the page about floating in the Dead Sea.

Taking it one step further

Steve Spangler Science has a great idea for dragging this out into one more step. Fill half of a tall glass (that an egg will fit in) with this salty solution and then slowly pour plain tap water down the sides of the glass, being careful not to mix the two solutions. Gently drop the egg in the solution and watch it sink past the plain water, only to stop on top of the salty water! How cool is that?!

Do you have a favorite science experiment?

This post is shared on It’s Playtime.