Sunday, November 30, 2014

Growing Borax Crystals - Science Fair Project

Geology Unit Study

Week 4: Do different ratios of borax to water affect the quantity of crystals grown?
(This project makes beautiful Christmas Ornaments.)


The following science fair project was done by my 12 year old daughter.

Research
The versions of this project I’ve read on the internet all say to use 3 tablespoons of borax per cup of water.
Sources:
http://www.wdwfanzone.com
http://chemistry.about.com
http://www.scientificamerican.com




My Hypothesis
I think that the crystals grown in borax water with the most borax will grow biggest, because I think that the most borax will make the most crystals.


Materials
borax, water, empty glass jars, one cup measuring cup, small saucepan (for boiling the water before adding the borax), tablespoon, pipe cleaners, embroidery floss, craft sticks



Procedure
I used different ratios of borax to water to see which one grew the biggest crystals. I used one cup of boiling water, poured it into a glass jar, and stirred it until the borax dissolved. The amount of tablespoons of borax per cup of water were 1:1, 2:1, 3:1, 4:1 and 5:1. Then I soaked equal amounts of pipe cleaner in the mixture for 12 hours, checking on them five times and weighing them to see how many more crystals there were.



Results
All of the triangles except the one with the ratio 1:1 grew crystals. The one with the ratio of 2:1 was just barely covered with tiny little crystals. The 3:1 was covered. 4:1 was covered with large cube crystals, which I like the best. The last one, 5:1, was covered half a centimeter with somewhat small cube crystals.



Conclusion
My hypothesis proved correct. The crystals grown in the cup with five tablespoons of borax to a cup of water grew the biggest. Any ratio of borax to water bigger than 1:1 will grow crystals. The triangle in the cup with the ratio of 2:1 was not totally covered with crystals, and it looks as though it needs a few more crystals. I think that the ratio of 3:1 is the smallest ratio of borax that will grow pretty, solid crystals, so that is why the instructions on the internet all said that. As the amount of borax increases, the crystals grow faster. It took all of the twelve hours for the pipe cleaner to be covered with crystals on the ratio of 2:1, but on the ratio of 5:1 there were as many crystals as grew on the 2:1 in only two hours.

For next time
What else could have an effect the results? Maybe light, dark, water temperature, air temperature or time of year?


For activity ideas from others visit these blog hops.

Saturday, November 29, 2014

Creating Petrarchan Sonnets with Kids

Renaissance Unit Study

Week 9: We created Petrarchan Sonnets.

Problems and resolution are two key features of sonnets. Petrarchan Sonnets were named for the sonnet style used by the Italian Renaissance poet Petrarch. Elizabethan, Spenserian and Dante's version are other forms of sonnets. They all contain several common features.

Iambic pentameter describes the lines of the sonnets. Each line contains five groups of two syllable pairs making a total of ten syllables per line. Iambic is a two syllable rhythm pattern where the second syllable is emphasized. The words within, forgive, myself, explain, begin, before, remote, balloon and unite all have their emphasis on the second syllable.


This classroom project done by high school students served as a perfect explanation of iambic pentameter.

Most sonnets contain 14 lines. The first eight are known as an octet and describe a problem. The second six, sextet, resolve the issue.

The major differences between the specific types of sonnets are the lines that rhyme. Using letters to represent words they rhyme at the end of a line the rhyme schemes are as follows:

Petrarchan sonnets are usually written in Latin or Italian. These languages contain many words which have emphasis on the second syllable and are therefore easier to write and rhyme.
abba abba cde cde or abba abba cd cd cd or abba abba cd cd ee

Elizabethan sonnets are usually written in English. Because there were less words to select from to create rhymes, additional rhyming words were used.
abab cdcd efef gg

Spenserian - abab bcbc cdcd ee

Dante's Sonnets - Most of Dante's sonnets followed the Petrarch format, but some contained two sextets followed by two quatrains with the following rhyme scheme.
aab aab aab aab cddc cddc or aab bba aab bba cddc cddc

Writing Sonnets
We used a very mechanical method to create our sonnets.
 

First we selected the subject of travel then brainstormed a list of problems associated with travel; traffic jams, accidents, bad roads, bad weather, no sun, rain, getting sick, getting hurt, dirty rooms, small rooms, small kitchens, new beds, tired feet, missed trains and flights.

Then we brainstormed a list of good things about travel; relaxation, sun, exercise, trying new foods, sand, snow, swimming, skiing, learning new things, seeing amazing feats of architecture, outdoors, rejuvenation, works of art, and shopping.

Next we selected a few words from each group and tried to find rhyming words. For example, from rain, the list again, sane, pain, in sane, cane, gain, main, stain, train and vain was created.

Then we read some sonnets and wrote down some words used to begin lines; when I, the daytime, were painted, for nature, as clouds, which can, for in, those deep, and now, my world, green grass, reflected, repeated, all green, my eyes, yet maybe, within, forgive, and myself.

From those lists we worked to write a sonnet. Here's the result:

I long to lay on sand and soak up sun
Long hours spent on waiting for a train
The forecast calls for ninety percent rain 
As clouds fill up the moisture drops a ton

For nature ruins everybody's fun
Oh way does weather always seem a pain
Before the towels can be washed again
The beach vacation might as well be done

At least it's warm, there's not a hint of snow

The daytime hours pass with crafts and food
Green grass and flowers start to bloom and grow
And now the sun returns to change the mood

Those deep blue seas reflecting heat and light
I want to stay another sparkly night

 For activity ideas from others visit these blog hops.

Tuesday, November 25, 2014

Distance, Area, Volume Unit Study - Area of Triangles

Day 8: Area of Triangles
The kids developed a method for determining the area of triangles.

Previously, the kids learned to figure the area of right isosceles triangles by drawing squares and triangles, but today, the triangles were not right isosceles, so the method didn't work.

The formula for the area of a triangle is 1/2 the area of a rectangle with the same base and height as the triangle, but explaining that to my son caused confusion. Therefore, I gave him an isosceles triangle cut into two pieces. He rearranged the pieces so that they fit together in a rectangle as shown above. From the rectangle he was able to determine the area.

Next he was given only one of the triangles shown above and some time to think. He determined that the area was 1/2 the rectangle's area.

My seven year old was able to complete this and all of our other distance, area, volume activities as well.

Figures are abstract as compared with manipulatives which are concrete. Making the transition into abstract figures which represent objects can be very difficult for some children, including my son. Therefore, sketches on paper were created to review what the kids discovered and get them used to seeing sketches.


Sunday, November 23, 2014

Geology Unit Study - Gemstones

Week 3: We went mining for rocks and minerals and visited a historic mill where minerals were polished and turned into gemstones.

Gemstones are rocks or minerals which have been cut and polished. Many gemstones are used for jewelry and the rarer the mineral, the more valuable the gem.

Like miners, historic gem polishers had short life-spans. The toxic dust breathed while polishing usually lead to lung disease. Gem polishers worked on their stomachs using their feet to push the stone into the grinding wheel.



As technology improved, gem polishers began to work in an upright position, but continued to breath toxic dust.

Many minerals drastically change their appearance when polished like the fluorite shown in the above photo.

Digging for Gemstones in Idar-Oberstein
After learning about gemstones and polishing techniques at the Idar-Oberstein, Germany Historic Mill, we spent two hours digging for precious stones. The field was fortified with rocks and minerals from around the world, so a successful dig was guaranteed.

Searching for stones in newly turned over ground

Digging with a pick-ax

Just getting started

Sifting dirt for stones

Cleaning stones in the wash basin

Scrubbing off the mud

Two hours of digging is back breaking difficult work whether the field is fortified or not. We were glad this was a field trip and not a regular job. Often stones under the ground all looked alike. They were not obviously good finds until they were cleaned.

Digging in this fortified field was a bit expensive, but was totally worth it. We gained an appreciation of what easy mining is like and began a diversified rock collection. After returning home we spent several afternoons clean rocks and trying to identify them.

Saturday, November 22, 2014

Carving Soap Stone with Kids

Renaissance Unit Study

Week 8: We carved soap stone like Michelangelo carved marble.

The marble which comes from a quarry near Florence, Italy is some of the purest marble in the world and it was during Michelangelo's day too. It was removed by inserting wedges of wood into chiseled rock, and then swelling the wood with water. Once it was free from the hillside, it was rolled onto a mound of sand under which rested a series of logs which acted as wheels for moving the block.

Among the numerous famous works of Michelangelo is the Sleeping Angel which comes with an entertaining story. In order to receive a higher price for the statue, it was buried in the ground for a period to obtain an aged look, thus appearing antique. The plan worked and it was sold.

When carving marble Michelangelo often began with fired and sealed clay models. Chisels, drills, rasps and files were used to shape the marble. The video Carving Marble with Traditional Tools gives an excellent description of how the work was done.

Michelangelo by Diane Stanley describes his pieta, David and work on the Sistine chapel. Michelangelo's surprise was great the Laocoon was unearthed. The ancient Roman statue from Nero's house showed body structure detail and people moving. It was a great contrast to the non-moving statues of Michelangelo.

Carving Soap Stone

Soap stone is a soft rock which contains lots of talc and sometimes feels soapy or waxy to the touch. It has been used for carving throughout history since it is relatively easy to chisel and cut and can be found at craft stores.

Materials:
Soap Stone
Chisels
Hammer
Files
Hack Saw
Safety Goggles
Leather Gloves
Mask
Modeling Clay

The kids each began with a small chunk of modeling clay which was used to  form their plan.

My 12 year old daughter's flower

My 7 year old daughter's hedgehog

 Next, the kids began hammering away at their soap stone with chisels.

Hack saws were used to remove large chunks. Files were used to smooth out rough edges and drills were used to remove large interior sections.

This was an ambitious project which I never imagined doing. Now that we've been through the process, it doesn't seem much different than learning to sew a quilt. Both are skills which require time and effort, but are achievable. My girls really enjoyed this project and worked to complete their carvings after the afternoon class was over.

Flowers in stone by 12 year old girl

Ring Holder by 15 year old boy


For activity ideas from others visit these blog hops.



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Thursday, November 20, 2014

Interest Based Education - Reading

Until recently, my second grade daughter has shown very little interest in reading. Therefore, I consider reading our first major breakthrough using the interest based approach to education. Last year and previously, we read together and I required her to read to me. (After all, I feel reading is very important.) Unfortunately, despite the fact that she liked the books and even selected them herself, it was a constant struggle, since reading was required.


Enter Unschooling
One thing my seven year old is very interested in is Pippi Longstocking. In the past, I read her all four of the Pippi chapter books. Since then, she discovered Pippi cartoons on youtube. Although I personally don't have an issue with her watching the cartoons, I do have an issue with her spending all of her available time watching them. So I've been thinking about how to get her to change her focus.


Option 1 - Limit technology or Pippi time
Potential result: This will create a deeper desire for her to watch Pippi and more videos in the future. Plus, doing this is the opposite of encouraging interests.

Option 2 - Change her focus to a different educational video - In other words, encourage her to watch more videos (that are educational).
Liberty's Kids is a series of animated American History videos for kids. When episode one was turned on for me to enjoy, she quickly joined to watch the episode. I was hoping that she would turn on Liberty's Kids instead of Pippi on her own, but that didn't work. Perhaps she just needs a little more exposure to Liberty's Kids, or a series which she finds more interesting?

Option 3 - Offer to read the Pippi books again
This is where we had the breakthrough. While she was watching Pippi, I pulled the chapter books off the shelf and set them down next to her. I offered to read them then walked away so she could finish her episode. Once the Pippi video was through, she came downstairs with her nose in one of the Pippi books and announced that she would be reading them on her own.


Although the books are way above her level I have no doubt she will be finishing them on her own.

(Can you see the purple flashlight strapped to her head? She's reading Pippi in bed before going to sleep.)


She can read and is highly motivated to read the Pippi books. It just may take her a while to get through them all, but her reading skills should drastically improve.

Wednesday, November 19, 2014

Flowery Knit Hats

My mother knitted these flowery hats for the girls.

Although they appear complicated, they are actually basic hats adorned with knitted flowers. The flowers were created by knitting small rectangles and then rolling them into a coil. The leaves are slightly tapered rectangles.


Since this hat had so many strings coming inside when tying the flowers on, a small circle was knitted inside the hat to cover them. I love the way embellishing basic hats and other items can completely change the look.

What have you embellished? Do you have a favorite knit flower book or embellishing book? If you do please leave me a comment.


Check out these great blogs full of educational activity ideas. 

Tuesday, November 18, 2014

Area of Squares, Rectangles and Triangles

Distance, Area, Volume Unit Study
Day 7: Area - Squares, Rectangles, and Triangles
Measuring area answers the question how big is it. Formulas used to calculate area and perimeter were introduced to my son when he was exploring math on Khan Academy. Unfortunately, he didn't really understand what area and perimeter were, so he came away thoroughly confused.


Area is measured in squares. After learning about one square inch, he was easily able to determine the area of these shapes built from squares, simply by counting.

Next he determined the number of tiles we would need to redo our bathroom floor in one foot square tiles.

Then we explored triangles. On the right side of the picture below, there is a one inch string, a one square inch piece of paper, a one-half square inch of paper cut into a rectangle, and a one-half square inch of paper cut into a triangle. The middle column contains the same figures, but double the size.

After creating these figures, I asked the kids how big they were.

I asked them how big this two square inch triangle was and they were stumped. So I created a blue triangle the same size and cut it.

They quickly determined it was two square inches.

So they were given the large triangle and asked how big it was.

At first, they both wanted to measure the hypotenuse, but then both decided to draw lines on their triangles.


With different sets of lines they both arrived at the same answer.

This method of discovery mathematics is very important for my son. He learns best when he figures something out for himself. He is a natural problem solver who does not learn well with explanation and example.


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