Monday, October 25, 2010

monday chem experiment

korrina worked on a science experiment this morning that allowed her to see that when matter goes through a substantial change, the total mass is not affected.

she did this by combining a solution from boiled red cabbage leaves with white vinegar, turning it pink. then she measured out 1 tsp of lye, weighed it with the vinegar/cabbage solution, poured it into the beaker and watched everything turn yellow/lime green. the color change and warmth of the beaker signified a chemical reaction was taking place. re-weighing everything and seeing that the mass was the same as at the beginning, proved the Law of Mass Conservation: matter cannot be created or destroyed. it can only change forms.

with her experiment completed and recorded, she happily went off to see james (in her new boots. i like them. they're good city walking shoes).

chanda worked on her handwriting, italian, theory and violin. morgana did the same before running off to pottery.

chanda also did some writing in her story review lesson book. now we're going to run out to look at some fabric that is needed for her family matters solo, and then i'll take her to her group modern lesson with ellen robbins. we'll meet m at the train station, as she is heading uptown early to help ellen with her 7 year olds and the wedding of the mouse dance.

5 comments:

  1. So many new interesting posts. I love your nature table. Do you decorate it or does the whole family participate?

    May I ask what you use for chemistry?

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  2. hello eva, korrina is doing a potter's school course this year. http://pottersschool.org/ we like that there is an online lecture once each week with a teacher. k has been happy with it and has been enjoying the experiments. she doesn't like the algebra that goes along with it quite as much, but greg works with her on any questions she has.

    i used to do the nature table along with the girls when they were small. now, all of us get so busy that usually it's only one of us who finally says . . "hey, we need to fix the nature table." this season it was chanda. we thought she did a lovely job. what happens, is that when we go away and leave the cats, we take it down so they don't destroy our woolly people. they love to play with the wool! hmmm. they also play with the little wooden animals. they love knocking things down. hazards of city apartment living. when we were in brooklyn, they could go outside and wouldn't be quite so destructive (though xena once knocked down from a dresser a beautiful clay mask that korrina had made. it was early morning and greg and i weren't rising quickly enough to feed her! the problem was, it was a black clay mask korrina had made of xena . . so she destroyed her own mask . . i still have the pieces. one of these days i'll figure out how they can be glued together). when we're here, jack bulldog keeps them away. he chases them and they are scared of him. (he always travels with us and we get someone to come in and feed the cats). we have three cats: xena, madeline and hermione.

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  3. Thank you, Dorina, I have heard of Potter's School, but have never taken a look at it.

    You know, our cat Julius does the same thing. He normally doesn't jump onto the nature table, but whenever we leave one of our felt dwarves (stuffed with wool) on the floor or a low shelf, he goes crazy, grabs the dwarf and runs to some hiding place to guard it. He also goes crazy when we put our lambskin (for babies) on the floor. I wonder if it's the smell? I was wondering if your cats ever get to go outside. I always think that cats need to be able to come and go as they please. It must be hard to keep them inside all the time.

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  4. hi eva. julius sounds so sweet and funny! yes, i often feel sad that they can't go out, but also acknowledge that they have a good home, though it's not perfect. in brooklyn, there were many feral cats. once, we even tried to catch a kitten who kept coming around for food. she proved to be very elusive!

    xena does better with not going out these days . . though she is older than madeline and not as inclined to want to go exploring anymore. madeline has always been very inquisitive. we were told she was the first kitten to leave the dresser drawer in which she lived with her brothers and sisters. maybe one day i'll figure out a better solution for her.

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  5. Do you have a balcony? Maybe you could have some little play area on a balcony . . .

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