Posts tagged: food coloring

Tiny – Cool Colored Rice: An all-ages project!! (Weekly Unplugged Project)

By , June 28, 2009 9:53 pm

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Our Weekly Unplugged Project post for this week’s theme of tiny is coloring rice (a grain of rice is tiny, right?).

Not very original, but I was going to take this a step farther with a colored rice project.  However this simple first step was such a HUGE hit with my kids of all ages and genders, that it deserves its own post.

I like color.  There is not one white wall in my house.  Therefore I have always wanted to try coloring rice. Is that a logical progression to you?  It is to me.

Instructions for how to make colored rice are all over the internet, such as here and here. Google “coloring rice” or “colored rice” and you will see!

We needed a large bag of white rice. Don’t use brown rice or parboiled (which is sort of beige), since the colors will show up better if the rice is as white as possible.

I checked all the prices per ounce at our one local grocery store and found a 10 pound bag for about $8.00 (I am sure you could shop around and find a much better deal than that).

You’ll also need rubbing alcohol (maybe), food coloring, and plastic ziploc baggies.

I read somewhere that you can use vinegar instead of alcohol, or it can be done simply with food coloring alone, but the rice might not be as brightly colored.

We did a few batches without alcohol and they were fine, I honestly couldn’t tell the difference and the smell when damp was a lot better without it (the alcohol smell does disappear once the rice is fully dry).  I would skip the alcohol next time.

Some people say that paste food coloring produces a brighter result, but I thought ours turned out great with liquid coloring.

I passed out a baggie to each child and then scooped a few cups of rice into each baggie.

Next I added a bit of alcohol to each baggie (not much, a teaspoon maybe?).

Each child chose a color to make and dropped in the appropriate color, or mixture of colors.

NOTE: This is a really fun project for learning how colors mix (if you are a kindergarten teacher or homeschooling parent, be sure to remember this one, because it would make a great kindergarten color project)!

The really fun part is shaking and smooshing the baggie to spread the color.

Just be sure the baggie is closed properly. We had a bit of an accident as you can see here:

(I found these instructions that call for a plastic margarine container for the mixing instead of plastic bags. This method might be safer, as long as you make sure the lid is on tightly.)

We discovered that the more you smoosh and shake, the more uniformly distributed and solid the color is.  If you only do a bit of mixing, enough to just barely color everything, you get a very pretty variation of colors which I preferred:

Once you feel the rice is colored to your satisfaction, then spread it on a foil covered baking sheet and put it in a 200 degree oven until dry.

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Stir about half way through the process to uncover the wetter rice from underneath. It took about 15 minutes for us, but if you put in a lot of liquid color and alcohol, it might take a bit longer.  You can also let it air dry, but I am far too impatient for that.

The cooled, dry rice was irresistible to little hands. Even I had to touch it and sift it through my fingers. What a great, Montessori sensory material!

After the rice is dry and cool, use it right away or store it in a baggie or jar.

My kids and I all LOVED this project! We made lots and lots of colors. The children experimented with different color combinations and amounts of mixing.

One of my favorites was this one, where my 7 year-old son put many different colors in. I anticipated a big muddy brown mess, but he didn’t mix it up much and ended up with quite a variety of lovely earth tones in his batch, as you can see here:

Remarkable fact:  The kids are 8 (girl), 7 (boy) and 3 (girl)…plus a guest: age 8 (boy), and me (girl)… age more than 8 and less than 100, and we ALL loved this project. It is hard to find a project that appeals to all ages, but this one was it for us.

As my oldest daughter said, “Our kitchen is a colored rice factory!!”

By the way, anticipate a good lesson in vacuum cleaner use after this project.

Also note the hopeful dog parked strategically under the kitchen table, just waiting for falling goodies:

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Did you do a tiny Unplugged Project this week?  If so, then please put your link (to your post, not just your blog) in the Linky below.  If you didn’t do a tiny project this week but would like to learn how to join in future Unplugged Projects, then please do not link, but read more about how to join in here.

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The theme for next week’s Unplugged Project will be:

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Enjoy and be creative!

Color – Marbleized Paper (Weekly Unplugged Project)

By , February 2, 2009 9:20 pm

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This has actually (unintentionally) been a colorful week for us.

I haven’t mentioned Odyssey of the Mind (OM) here yet, but my friend and I just discovered it (actually she discovered it) and we dived right in last fall as coaches for our children’s Montessori class (1st – 4th grade). It’s a bit complicated to explain OM in this post, but suffice it to say that the children have to come up with an engineering or creative project entirely on their own.  “Outside Assistance” is heavily penalized.

My 8 year-old daughter apparently has the role of a tree in her completely student-created play.  She decided she wanted to dye some net green to be her leaves, so she chopped up an old artichoke that we happened to have in the kitchen and boiled the net in it to dye it green.  It didn’t work so well. She then tried green food coloring. Not too effective either (I think it would have worked better on a natural fiber). That was all entirely her idea.

Personally I probably would have headed to Walmart for some green dye, or better yet, green net!  But of course I couldn’t say that to her – “outside influence.”  So, I look forward to seeing what possible solution she comes up with next.

I was so proud of my daughter’s initiative and creative thinking!  These Unplugged Projects are more than just a diversion.  I believe that they encourage original thought and teach that it is OK to not get it right at first.  Just experiment to see what works, and if it doesn’t, then try and figure out how to make it work.

That was a bit of a tangent, but her experiments with dye got me thinking about food coloring and how we could incorporate that into the theme color. I began Googling food coloring and oil because I knew that the two don’t mix and I thought there might be something fun out there. I was quite excited to find this: Marvelous Marbling.

I have wanted to try marbelizing for a long time now. I have fond memories of loving it the time we did it in elementary school. Since the memory has stayed with me that long, it must have made a big impression!

Traditional marbleizing involves oil paint and turpentine. Frankly, I have never had the energy to tackle that. Turpentine – ick. This webpage tells how to marbleize using just food coloring and cooking oil. I had to try it!   So we did.  I made a few alterations – here is my version.

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For this you’ll need a shallow pan that is large enough to fit the paper you’ll be using (we used baking pans), food coloring, cooking oil, white paper (we used card stock – NOTE:  thick card stock produces as a nice result, thinner paper tends to get a bit greasy), water and an eye dropper.  The eye dropper is optional, but we found it worked better than just pouring.

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Put just enough water in the pan to cover the bottom (**VERY IMPORTANT!**).  As we discovered, if the water is too deep, the color will sink if you work too slowly.

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Put about 1/2 tablespoon oil and 1 teaspoon food coloring into a glass (we halved the proportions of the original since we only had tiny bottles of coloring and I didn’t want to use it all up).

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The two ingredients will not be mixed. [NERDY SCIENCE NOTE:  Oil and water don’t mix due to dissimilar molecular bonds – “like dissolves like” and water molecules and oil molecules are not alike.  Read more here about why oil and water don’t mix:  Let’s Talk Science, and here is a good, simple tutorial about solubility and water: Water Tutorial]

At this point, the mixture will look something like this:

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Beat it hard with a fork until well blended.  It is like mixing an oil and vinegar salad dressing and will take a few minutes.  We experimented with mixing it in a jar and shaking it up.  That worked even better, just make sure the top is on tightly (we had a bit of a food coloring disaster the first time my daughter tried it).

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When done, it will look more like this:

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Using the dropper (or gently pouring if you don’t have a dropper), place drops of colors on top of the water.  The drops will stay in a blob, or perhaps explode a bit.  You can place one color inside another.  Experiment.

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When you have dots of color all over the surface of your water, use a toothpick, or a fork, or a feather (whatever you want to try) to make patterns in the colors.  They’ll make blobs and swirls and pretty patterns.

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When you are happy with the design, gently place your paper on top of the water.  Leave it for a little bit.  We waited until the oil started to show through the back of the paper (about 30 seconds?) and then peeled it gently off.

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There will be lots of oohs and aahs as the pattern is revealed!

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That last one reminded me of a medical slide. LOL!

We even tried hot water vs. cold water.  Knowing that molecules move faster in hot water, we wanted to see if anything different happened to our oil/color mix in really hot water.  We didn’t see anything too dramatic, but my daughter did note that the blobs converged a bit more quickly.  (For more on hot vs. cold liquids, please read my post:  Molecules in Motion).

We also experimented with dropping a blob of food coloring directly onto the wet cardstock.  We could work it a little with a toothpick for a bold effect:

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Let the paper dry then use it for cards, wrapping paper, framed art, whatever you want.  Ours will become thank you notes.

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According to my 8 year-old daughter, this is her “new favorite project!”

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For more color project ideas, please check out all the links here.

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The theme for next week’s Unplugged Project will be:

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Hope to see you then! (If you want to join us, please read about how to here.)

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(marbelized)

 

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