SCIENCE 🔬 ⚗️⚖️ Feed

🖌Markers ☕Coffee Filters 🌈Rainbow Walking 💦Water ⌛️Timelapse Kids ⚗️Science Capillary Action

Today, we are using materials you probably have at your home such as ☕️coffee filters and markers to conduct this amazing chromatography tie-dye color mixing walking 🌈 rainbow experiment! 


What you will need:

  • white coffee filters,
  • little glass jars, shot glasses or small drinking cups,
  • markers in rainbow colors (do not use Sharpies, crayons, pencils, solid tempera paint ~ trust me, we tried it all! only these type worked for us),
  • water (see tips 👇🏻 below). 

DSC_0001Invite your child to draw a large circle at a base of a coffee filter. 
DSC_0001Do the tracing over scrap paper or a newspaper as the markers bleed through.
DSC_0001By tracing just the base-circle,  your marker will not bleed too fast otherwise turning the whole filter one color instead of tie-dye!   DSC_0017Fill glasses with a little bit of water (about an inch).
DSC_0017 The way you fold is important❗️Fold your coffee filters in half. 
DSC_0017Fold them in half again.
DSC_0017Fold each filter for the third time ~this will expose the white un-markered center at the point.DSC_0024Insert folded filters into jars/shot glasses.DSC_0028For tie-dye effect, make sure that only the tip of filters is touching the water ❗️DSC_0028
The water travels fast ~ within few minutes, you will be seeing the result of the process called capillary action!DSC_0028 
Capillary action is a process during which liquid, like water, moves up into a material with a lot of small holes (like paper ~ coffee filter).

DSC_0051Capillary action happens when three forces called cohesion, adhesion, and surface tension work together.


In other words, capillary action occurs because water molecules bond together due to forces of cohesion and adhesion as well as stick to other substances such as paper (coffee filters). 

DSC_0051The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules.  DSC_0069 Adhesion of water to the surface of the material (coffee filters) will cause an upward force on the liquid (water). Notice, that the remaining (non-absorbed) water in glass jars remains clear! 

DSC_0074   A voila! A beautiful 🌈rainbow! DSC_0074  ⌛️30 minutes later ~ do you see the tie-dye effect!
DSC_0074Purple was Julia's favorite, while blue was Adrian's choice! DSC_0074

Once the capillary action is completed (30-40 minutes), take the filters out of the water and let them dry.
DSC_0074I suggest air drying filters first until the colors settle (clothespins do the trick!). Otherwise, the color from filters will transfer to the drying surface. After about ten minutes, we had rainbow coffee filters to create a craft with!

DSC_0097What to do with these beautiful rainbow filters? What about a rainbow flower! Just fold each filter from the center, crinkle it individually and hold all the filters together!

DSC_0074Or, insert a green pipe cleaner at the center of a filter, threading it through, then thread the next filter, till all filters are on a pipe cleaner ~ tie the tip of the pipe cleaner in the center and crinkle the filters up.
Rainbow flower! This can make a perfect💐Mother's Day🎁Gift too!

DSC_0028 We did a similar flower craft when Adrian, as a tribute to Van Gogh's Birthday, made 12 🌻Sunflowers Tissue Paper Recycled Cardboard Roll Paper-Mache Craft (see 📽️ a video of him making it here).

For more on capillary action, see here 💛💙❤️Primary Colors, 💦Water & Paper Capillary Action ⌛️Timelapse ⚗️ Kids Science Experiment (🌈 Rainbow Walking Water).

For more on color-mixing, please see here "🎨Painting with 🌈Colored Vinegar on Baking Soda Science Experiment 🔬 💡⚖️ 101 🎥 Series 🎇," and here " 👔 Father's Day🎈Balloon Color-mixing DIY Craft (Sensorial 🖐️👀👂👅👃 Activities 101 🎥 Series 🎇)."

For more on science experiments, see here a video-post "Float or Sink❓Tangerine 🍊 Science Experiment (Science 🔬 💡⚖️ 101 🎥 Series 🎇)."

Also, see here "Walnut Shell ⛵Sailboats 💦Water Science Experiment (Science 🔬 💡⚖️ 101 🎥 Series 🎇)."

And here a video 🌋 Erupting Volcano Science Experiment 🔬 💡⚖️ 101 🎥 Series 🎇.

💫Magical 🌀Hydrogels • Kids ⚗️Science Experiment 💦Trick •🔬⚖️ 101 🎥Series 

Happy ❄️February 1st! Have you wondered what to do with an old monthly 🗓calendar? A 🤗fun kids ⚗️science experiment of course! This is a cool trick your kids will 💙love when they see the 💫magic unfold in front of their eyes! A magically appearing image and magically disappearing 🌀hydrogels ~ water-beads!   

All transparent substances have a characteristic called refractive index, which determines how much the path of light is bent/refracted when entering a material.  In optics, the refractive index or index of refraction is a dimensionless number that describes how light propagates through that medium. We see a colorless object only because its refractive index differs from the refractive index of the medium, usually the air. (Read science mystery revealed below.)

 How to prepare this experiment:

DSC_0306 Grow hydrogels: pour water over dry clear water gel beads and wait for about an hour.

DSC_0306 Lay a laminated picture on the bottom of an empty tray (we are using an aluminum baking tray).

DSC_0306 Wait until hydrogels are fully expanded. 

DSC_0306Pour hydrogels over the picture and then add water and watch the magic unfold!

DSC_0314This tray is still filled with hydrogels which are now absolutely invisible, while the picture is visible!

Science mystery💡revealed: the refractive index of water is 1.333 (meaning that light travels 1.333 times slower in water than in the vacuum). The air, on the other hand, has a refractive index of almost 1. That is why we see water in the air or air bubbles in the water. 

The refractive index of clear see-through hydrogels is 1.5, that is why in the water, they become completely invisible! 

To observe how hydrogels grow real sped up time, see here a 🎥 video of how we "made" hydrogel beads in Sensory Exploration with Hydro Gel ❤️️ Water Beads. 

For more on fun Science, see here "Rainbow 🌈Colorful Skittles Fun💧 Water Science Experiment for Kids •🔬⚗️⚖️  101 🎥 Series" and see here a video-post "Lava Lamp: Oil vs 🌈 💧Water Density Immiscibility ⚗️Experiment with 💥Alka Seltzer."

Colorful 🌈 Skittles Fun💧 Water Science Experiment for Kids •🔬⚗️⚖️  101 🎥 Series 🎇

This simple and fun ⚗️science experiment with Skittles is visually astonishing and scientifically intriguing! It is also very easy to conduct at home utilizing 🍭materials you probably have {Do you still have those unwanted 🎃👻Halloween candies?} but 🙅🏼refrain from giving to your 👦🏼child due to artificial coloring⁉️ So, what to do with those ❌not-too-healthy 🍭sweets? ⚗️Science experiment of course!


What you will need:

  • a plate with a white middle part,
  • Skittles (or other coated sweets),
  • water.

DSC_0021Place your Skittles on a white plate, creating a circle. (You may offer an older child to create a pattern.) Carefully pour warm water, just enough to have the water touch the Skittles. Watch what happens!

Skittles dissolve quickly, so you have an awesome science unfold in front of you right away!

Science mystery revealed: The color and sugar dissolve into the water and then diffuse through it. Since Skittles are coated with food coloring and sugar (ingredients that are prone to dissolve in water), when you pour water over Skittles, the colored coating dissolves spreading through the water.

DSC_0029This low resource fun activity provides many opportunities for investigation and further extensions:

  • Make a rainbow! Arrange Skittles in a circle in rainbow order: red, orange, yellow, green, and purple on a white plate. (A perfect St. Patrick's Day activity!)
  • Try using different water temperature, or white vinegar or even lemonade to discover what happens. 
  • Try using other coated sweets: can you find one that works as well as Skittles? (Did you try spearmint?) Candy dissolving science is fun to test out with a variety of liquids and candies. Different candies dissolve at different rates.
  • Time how long does the color take to reach the center of the plate using cold and warm water? Which do you think will be faster? The reason sugar dissolves faster in hot water has to do with increased molecular motion. The added energy in the hot water causes water molecules to move faster and sucrose molecules to vibrate faster. This added movement tends to make the bonds between sucrose molecules easier to overcome.
  • Time how long does it take for Skittles to dissolve in water? After about two minutes in contact with water, Skittles lose its outer coating. After about 12 minutes, half of the Skittle have been dissolved, and after about 25 minutes of sitting in the water, all Skittles have completely dissolved. 


More questions for the inquisitive mind:

  • Why do you think the colors do not mix, but rather gather like a rainbow in the center?
  • What can you do to hasten the process?
  • Can you detect the ‘S’ from the skittles? What happens to it?

For more on Science🔬⚗️⚖️:

  • We did a similar experiment but with Spearmint candies ~ see here ❤️Valentine's Inspired Unit Study.
  • See here 💛💙❤️Primary Colors, 💦Water & Paper Capillary Action ⌛️Timelapse ⚗️ Kids Science Experiment (🌈 Rainbow Walking Water). 

  • See here a video-post "🎨Painting with 🌈Colored Vinegar on Baking Soda Science Experiment."

  • See here a video post "🎶Musical 💦Water 🌈Glasses (Science🔬⚗️⚖️ 101 🎥Series 🎇)."
  • See here "Paper Towel, Markers and 💦Water 🌈 Color Mixing ⚗️Experiment (🔬⚗️⚖️Science meets 🎨Art 101 🎥Series 🎇)."

For ❄️ Winter inspired activities, see here ☃️ Winter Inspired Unit Study.

For🎅🏻Christmas inspired activities, see here  🎄Christmas Inspired Unit Study.

🌑Lunar Craters No-Cook 🏡Homemade Play Dough 🌙 Moon 🙌🏻Sensory Bin • 🌌COSMOS Unit Study

We are continuing our 🌌COSMOS Unit Study with this sensory invitation to learn about the Moon, Lunar Craters, Meteors and Meteorites. We are using National Geographic Kids First Big Book of Space book (buy here) as a reference. This book, with its colorful illustrations and simple text, introduces young children to the wonders of Space, explaining basic concepts of the universe, beginning with what is most familiar and expanding out into the cosmos. We learned that many chunks of rock float around in space. If the rock zooms into Earth's atmosphere towards the planet's surface, it is called a meteor. Usually, a meteor burns up before it reaches the ground. But sometimes, a meteor reaches Earth's surface, and if it hits the ground it is called a meteorite

DSC_0020 A crater is a big, bowl-shaped hole on the surface of a planet or moon. 

To learn about the asteroids and its impact on planets and moons hands-on, we made the Moon from home-made play dough and simulated the impact of asteroids with different colored marbles. We were inspired to create this invitation to explore and learn after working on KUMON Science Sticker Activity Book (buy here). "The moon has many holes on its surface. These holes are called craters." [A child is invited to draw more craters on the KUMON book's picture.]


We made no-cook home-made play dough, which came out very different from the one we used to buy, being much softer and lasting much longer.


  • 1 cup of plain all-purpose flour,
  • 2 tablespoons of vegetable oil,
  • 1/2 cup salt (Ally suggests adding 2/3 cups of salt- read here, so you may experiment),
  • 2 tablespoons  of cream of tartar,
  • up to 3/4 cups of boiling water (adding in increments until it feels just right),
  • food coloring (optional),
  • few drops of glycerine for extra shine,
  • you may also add essential oils or spices like cinnamon to give your dough an olfactory dimension.


  • Mix flour, salt, cream of tartar and oil in a large mixing bowl,
  • Add food coloring to the boiling water and then pour into dry ingredients,
  • Keep stirring until the dough becomes a sticky integrated dough,
  • Add glycerine,
  • Allow the dough to cool and then knead it until all of the stickiness has gone - keep going until the dough is perfect consistency! (If the dough is still a little sticky, add a little flour until it feels just right).

DSC_0020Our black bean sensory bin has colored beads and pom poms to resemble stars.
DSC_0020Stars actually come in different colors depending on its temperature
DSC_0020Round Kids' Puzzle of the Solar System, 50 Piece, (buy here), features the Milky Way, galaxies, quasars, asteroids, and more. The color of each planet's elliptical orbit matches the color of the planet to enhance the educational experience. (Adrian was able to first assemble it at 3.5 yo). 

DSC_0010We love My First Discoveries Books. Buy The Moon Book here.
DSC_0010A hot glowing piece of space rock falling toward Earth is called a Shooting Star.
DSC_0012Transparent overlay pages add a new dimension to a traditional reading. 

DSC_0012The Moon book illustrates hands-on the Moon and its effect on the Earth and oceans.  

DSC_0024For more on Space Unit Study, see here 🌌COSMOS Unit Study.

DSC_0067See here a different recipe in a post "No-Cook Homemade 🌈 Play Dough."


If in Holiday spirit, see here "🎄Holiday Inspired No-Cook 🏡Homemade 🍩Play Dough."

For more on Science, see here Science 🔬⚗️⚖️ 101 🎥Series 🎇. 

🎅🏻 Santa ❤️ Red Slime DIY Jar (Science 🔬⚗️⚖️ 101 🎥Series 🎇)

Today, we are making Holiday slime. It has been on my to-do list for a while now, and we are very excited to finally conduct this sensory learning experiment! Slime, besides being absolutely awesome to touch, is also an amazing science demonization. We love hands-on learning through play, and slime is a perfect activity to get children excited about chemistry! 
DSC_0042What you need to make a homemade slime:

  • 1/2 cup of liquid clear glue (buy here),
  • few tablespoons of saline contact solution (buy here) or liquid starch (buy here); some use borax which also has some boric acid but we avoid using since it is toxic). Boric acid and sodium borate are the best slime activators.
  • 1/2 teaspoon of baking soda, which helps slime firm up,
  • coloring,
  • glitter,
  • slime foam balls (buy in bulk here),
  • confetti stars. 

DSC_0043Pour glue into a bowl. Add glitter and liquid color. Stir until uniformly distributed.

DSC_0043Add contact solution and mix until thick and slimy.

DSC_0043Add little styrofoam micro-beads to your slime to make foam.
DSC_0043Add star confetti and mix well.
DSC_0043Mix and then knead the slime with your hands. If it feels loose, add more solution.
DSC_0043Slime too sticky?  Add more contact solution. Slime too hard?  Add a little more glue.

What is the ⚗️ science behind the slime? Baking soda helps to firm slime. The saline solution is the slime's activator and helps it to get its rubbery texture. The slime will begin to form immediately thanks to the mixture of boric acid and sodium borate present in the saline solution. These two ingredients are cross-linking agents that create your slime! The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. When you add the borate ions to the mixture, it starts to connect these long strands together. They begin to tangle and mix until the substance is thicker and rubberier like slime and less like the liquid you started with. The final step is to knead your slime. The slime is ready once it starts to pull away from the sides of the bowl.

DSC_0041But where to store your slime which can last for up to a week?


What you need for this DIY Santa Slime jar:

  • recycled baby food jar,
  • picture of Santa (we are using a cover from a notepad), 
  • pompoms,
  • a glue gun.

DSC_0080Glue two large pompoms to the top of the jar. 

DSC_0080 Glue Santa's picture to the pom poms. 

DSC_0080Fill up your jar with slime. 

DSC_0080Hot glue pompoms to make a beard and a nose.

We love hands-on learning through play. Slime = science = kids explore, while learning and having fun in the process. And adding a craft element to the science experiment makes the activity even more multidimensionally exciting! 

DSC_0080Store your slime in a container with a lid and enjoy it for over a week.

DSC_0080Our Santa is very happy to see White Christmas!

Wishing you a wonderful Holiday Season! Merry Christmas and a Happy New Year!

For more on Christmas Holiday inspired activities, see here a roundup post "🎄Christmas Inspired Unit Study ."