Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Monday, November 11, 2013

Physical Science, Module 4: Water

I am using Exploring Creation with Physical Science for Alex's 8th grade science text. I have found a few sites that are REALLY helpful with links and videos. I decided to post what I will use on my blog so I can find it easier when I go through it with Alex. But, I want to give these people credit. (Plus, they will have more on Modules 1-3 while I'm starting my blog with Module 4). The sites are:

So, now I'll pick and choose what I want to use for Module 4....

STATIC ELECTRICITY & WATER VIDEO


 
 
HOW POLARITY MAKES WATER BEHAVE
 

           

IONIC AND COVALENT BONDING

                             

LAUNCHPAD: COHESION AND ADHESION

        

LAUNCHPAD: SURFACE TENSION

       

PROPERTIES OF WATER

                      

PROPERTIES OF WATER

                      

ELECTROLYSIS OF WATER

                      

DISSOCIATION OF SALT

                      

SURFACE TENSION

                     

HOW A WATER SOFTENER WORKS

   

The sites mentioned above also have links to various experiments, cartoons, worksheets, etc. Because of the things we've already covered, I'm only going to do one with my daughter. It was created by Debbie Nafzger and is a wonderful "Chemical Formula" worksheet.

Tuesday, January 29, 2013

Mushroom Matters

FACT: Egyptian pharaohs ate mushrooms and forbade anyone else to eat them. They believed the mushrooms had magical powers!

FACT: Roman warriors were fed mushrooms to give them "god-like strength"!

mushrooms in my backyard
I love mushrooms. Not to eat, but to look at and photograph! Alex is studying mushrooms at school and, as I was helping her with homework tonight, I came across a wonderful resourse for upper elementary/middle school students!

more mushrooms from our backyard
The resource is called "Mushroom Education Packet" and it is at the American mushroom site. The interesting facts I listed (above) were found in this packet. The packet includes these sections: A History of Mushrooms, Mushroom Farming in the Kennett Square Area, How Mushrooms Grow, The Parts of the Mushroom, and Recycling in the Mushroom Farming Industry.

Besides the short articles, the lesson packet also includes worksheets like fill-in-the-blanks, word searches, and true or false questions. There are even mushroom recipes, mushroom math, a mushroom science experiment, and more surprises!

our 'spore print' from 2008
When we did a quick, impromptu study of mushrooms in 2008, we made the above spore print from a mushroom. It was a neat exercise, and this study guide talks you through how to do it. It's a great activity to do a couple days after a rain!

If you use the packet, please let me know! I'm no longer homeschooling, but still have a heart & desire to teach!

Saturday, March 24, 2012

Cheshire Cat Moon

A couple of months ago, my sister and niece were told me they saw a "Cheshire Cat moon". I was skeptical. I thought the crescent moon always was on the 'left' or 'right', not on the 'bottom'! But, last month, I took this photo...


The crescent is on the BOTTOM and looks like a Cheshire Cat! And, tonight, a month later, it looks like a Cheshire Cat again! Wow! How have I missed this for all of my life???

from www.dailypictures.info/free-pictures

Wednesday, February 08, 2012

Historical Fiction and Nonfiction for Children

I am currently taking an online class called "Writing for Children". I'm not sure if I'll really do anything with it, but it is something that interests me. If I did ever try to write books for kids, I would probably do either historical fiction or nonfiction.

Since the best way to become a writer is to 'read, read, read!", we are sent to a library or bookstore for basically every lesson. The lesson I just completed was about historical fiction and nonfiction and I wrote a lengthy post about some of what I'd found during my trip to the library. I thought I'd share it in case it might get someone interested in one of the books I review or even gives them insight into the writing process. So, here's my post from class...

I spent a few hours at the library yesterday and had a wonderful time sampling historical fiction books for YA. My surprising favorite was Out of the Dust by Karen Hesse. Why surprising? Well, first of all, I didn't really care for the cover - just an old hoto of a girl in a hat. It looked kind of boring to me. And, secondly, I opened it and discovered it was all written in poetry! Not rhyming poetry, but definitely set up as poems. But, I started reading and was pleasantly surprised!
The topic of the book is the Oklahoma Dust Bowls. I grew up in Oklahoma, so this is a topic I am personally interested in! My husband's grandparents, in fact, lived on farms in Oklahoma during this time. (And, I'm going to have to ask them about it!)

So, the story is told from the point of view of a 13 year old girl named Billie Jo. She gets upset because some of the neighbors are having a contest to see who can kill the most rabbits because the rabbits are damaging their crops. But Billie Jo says that "grown men clubbing bunnies to death" makes her sick. But, she's glad they gave the rabbit meat to families that really needed it.

Later, she's asked to play the piano for an event, and she dreams of going to DC someday and playing for President Roosevelt. And, another section talks about meal time...how they set the table with the plates and glasses upside down and the napkin over the silverware and they don't turn them over until the last minute - to keep the dust away, of course! But, Daddy comments that the "potatoes are peppered plenty tonight" and likes his "chocolate milk" for dinner, when really they are both just the result of dust.
The book tells a lot about the dust bown and what life was like for a young girl at this time. And, it is probably a quick read with the short, poetic type chapters that read easily. I'm going to finish this one!

The YA nonfiction book I chose to read was An American Plague: The True & Terrifying Story of the Yellow Fever Epidemic of 1793. Wow! This is an incredible, true story by Jim Murphy and he did a LOT of research! The back of the book includes 13 pages of "sources", many of them with notes! The sources includ books, newspapers, magazines, personal journals, and letters. I liked that he accomplished his research without any interviews...a process that I'm a little intimidated by!
I think the story reads like fiction...just so smooth and you really get into the lives of the 'characters!' It is not stuffy or factual, though filled with researched facts. He includes quite a few quotes, often short ones like a description by a doctor saying the rash "resembled moscheto bites." It makes the story so much more 'real'! And, of course, it is a realy story!
Since nonfiction or historical fiction is what I'd probably like to write, I really loved this lesson. So, I'd love to talk about two more things....


First, I am listening to a lecture series about cathedrals and requested an ILL book at the library for David Macaulay's Cathedral book. I accidentally got a copy of "Building the Book Cathedral." Well, the book tells about how Macaulay wrote the book! His FIRST! It talks about going to a children's publisher with an idea and two drawings...and how they got excited about a totally different story than the one he'd presented. And, he went with it! The story of building a cathedral. Macaulay actually took half of his advance and headed to Paris to do some research. He shows his sketches, his drafts, his first submitted manuscript (which he said looked like a "war casualty" when he got it back.) I think this is a great book to see the process a first-timer went through in getting published!

Lastly, I went to the children's area and found four books that looked intersting by Kelly Milner Halls, one of the authors mentioned in this lesson. The books are "Mysteries of the Mummy Kids", "Albino Animals", "Dinosaur Mummies", and "Tales of the Cryptids."

The first one I opened was the book about dinosaur mummies. The first page is an introduction in which Halls talks about growing up in Friendswood, TX as a little amateur naturalist. She loved finding anoles and watching their tales grow back! Years later, when she was at her first natural history museum, she saw the dinosaur skeletons that reminded her of the lizards she loved as a child. When she grew up to become a writer, she said, she "got lots of chances to dig dinosaur bones with paleo-experts."

At the back of the book, she gives mini-bios of some paleontologists and a lengthy list of resources for kids (or adults!) to look at if they are interestd. Then, she also gives a bibliograhy with a list of books, articles & websites, and "personal interviews and correspondence" that she used to create the book! That's a lot of research!


P.S. I also visited David Macaulay's site and watched a talk he did on TED called "All Roads Lead to Rome Antics", which is the story of how he created his Rome Antics book (above). I thought this was a great video for an aspiring author to write as it gives a lot of insight to all of the ideas he considered and trashed.

I am also watching a video based on David Macaulay's Cathedral book (embeded above). This is a wonderful movie about cathedrals which goes back and forth between the storybook world of Macaulay's Cathedral and real cathedrals with narration by David Macaulay himself. In the cartoon world, there is a great visual of how the heavy arched roofs were made and another section showing how the stained glass windows were created. Although the video is a little grainy, it is a wonderful addition to anyone wanting to learn about cathedrals! And, I believe you can borrow the same video from your library and the quality might be a little better.

Friday, September 17, 2010

More Bubble-ology

We continue to have a lot of fun while learning in my GEMS (Great Explorations in Math and Science) class at our co-op. A few weeks ago, we experimented with which dish soap made the biggest bubles. To do this, we blew bubbles on a table and then measured the circumference of the bubble when it popped. The soapier you get the table, the easier it is to see the circumference! (And, what a mess!!! But, it is FUN!)


(GEMS has a great orientation video you can see at this link.)

Tuesday, August 31, 2010

Bubble-ology

This year I am teaching 4 classes at our local co-op. Yes, four! Well, two of them are the same class - it was just too big so we had to open a second session. I'll be telling you more about my classes, but for now I wanted to introduce you to my GEMS class.

GEMS stands for Great Explorations in Math and Science. In this class, we will be doing various units created by GEMS. Our first unit is Bubble-ology.

My class is for 5th-7th graders. We have a limit of 8 students per class and this one currently has 7 students. Bubble-ology is a great study about... bubbles! For the first class, we were trying to make bubbles out of various items that you can find around the house. I was amazed that one girl made bubbles out of paper towels! She just rolled it into a tube and was able to blow bubbles! Creative!

Our co-op is at a house in the country. We have 7 rooms (I think) and this is my room. Since I only teach 2 hours on Tuesday and 2 on Thursday, I share it with a few other teachers. I think this was the dining area - it is right behind the kitchen. It has a tile floor and a sink since I teach messy classes.
Our favorite new bubble-maker is a fly swatter! Alex & I played with the bubbles at home and here she is demonstrating the fly swatter bubbler. (It was brand new.) I'm excited about this class and the kids had a great first day!

Tuesday, July 13, 2010

GPS Camp

First of all, thanks again to everyone who is sticking with me through the summer! I really am still having trouble getting motivated to post. And, I'm working out HARD! I'm working towards a 5K in October and a sprint triathlon in April and putting in lots of hours training. I am learning to "run" (jog) and made a new personal best yesterday - I ran for 5 minutes straight! I'm also swimming, cycling, lifting weights, and other types of activities. I'm really feeling great!

Ok... back to the blog! Alex is in a GPS camp at our co-op this week. Well, actually she's home sick today, but we hope she'll be ready to go back tomorrow. (She was vomiting last night, but no fever or other symptoms.) Anyway, yesterday they learned some of the fundamentals regarding longitude and lattitude and satellites. At lunch, he explained to me (and others) some basics about GPS and satellites. Here is some of what I learned:

  • satellites were originally intended for military applications and first launched in 1978

  • there are 30 satellites which each circle the globe every 12 hours

  • GPS receivers compare when a signal was received to when it was sent to determine how far the receiver is from the satellite

  • each satellite has a unique "sound"

  • each satellite is built to last about 10 years, but the oldest currently up is almost 20 years old
Alex's camp lasts 2.5 hours a day. After learning about the GPS systems, they went out on our property (I think it is 4+ acres) to find a site the teacher had programmed. Then, the 3 groups of 3 each were to find a different location where the teacher had hidden a box.

I helped Alex's group and we found this box of goodies. There were instructions telling us how to trail blaze. There were specific instructions, but we basically to use the materials in the box to make a trail (300 paces long!) that the other teams could follow. This proved to be pretty hard for us! One boy on Alex's team led the way and he was out of all of our rocks pretty quickly. We then decided we needed to pick up our rocks and use them more sparingly and mark our team number on them (as other teams would be crossing our path, too). Well, time ran out and we never finished, but we learned a lot! We are both disappointed to be missing today's camp. 

I think today we will watch the following brainpop videos: GPS, satellite, and longitude and latitude. I also borrowed a book from the teacher titled "Let's Go Geocaching" by John McKinney (a DK Reader).

Monday, June 07, 2010

Monday Memories - Frogs & Frog Bread!

This week's Monday Memory comes from our co-op with Mrs. S and her two girls, too. We spent a day studying amphibians. We discussed amphibians, the lifecycle of a frog, and the difference between a frog and a toad. My favorite website was All About Frogs and my favorite books were Amphibians Bev Harvey and Frogs by Gail Gibbons.

From the All About Frogs site, we made some froggy bread! It was a lot of fun and turned out a little chewy, but good! And, we got to work in some math (if we need 6 cups of flour and there are 3 of you girls, how many cups should each girl add?). And, since we're studying microbes in our human body study, we talked about yeast and how it makes bread rise.

Here's Alex (over 3 years ago) measuring some flour.
 And here she is making her frog bread. We really had a lot of fun with this study!

We had so much fun that Alex and I made turtle bread, too!
She even added green dye to her butter!

Tuesday, May 04, 2010

The Polio Crusade (American Experience)

With Alex being sick today, we ended up watching The Polio Crusade which I had recorded with our DVR. It is another PBS American Experience movie, like The Assassination of Abraham Lincoln we watched a few months ago. Episodes air on our local station on Monday nights. We have also found them at NetFlix.


This was an amazing story. My mom grew up during this time and I talked with her about her experience last time we "studied" the topic of polio about a year and a half ago. My grandfather, her dad, had a mild case of polio.

From the movie, I learned that the March of Dimes started to combat polio. Up until that time, fundraising had relied on rich people giving large amounts of money. This campaign asked each family to send a dime to DC to help stop this horrible disease. It worked! Millions of dollars were raised, and it has changed the way charities raise money even today.

There are more resources online at PBS including a photo gallery, teacher's resources, then & now (about grassroots fundraising), a biography, an interview, and further reading (both books and websites). (And, The Polio Crusade is available to watch online!)

Here are some questions about the film that are on the PBS site. I had Alex answer them, and thought I'd share her answers here.

What is another name for infantile paralysis? POLIO


In what season did polio tend to strike? SUMMER

What rising young politician was stricken by polio in 1921? FDR

Why did polio become a bigger rather than a smaller problem after the adoption of modern sanitation systems? BECAUSE BABIES DIDN'T COME INTO CONTACT WITH THE POLIO VIRUS AND DEVELOP IMMUNITY TO IT

How was polio spread? WATER, PHYSICAL CONTACT, AND SHARING FOOD

What was the March of Dimes? A CHARITY THAT RAISED DIMES FOR POLIO RESEARCH

How did the March of Dimes spread its message among movie audiences? HAD CELEBRITIES LIKE JUDY GARLAND AND MICKEY ROONEY MAKE "COMMERICALS" ABOUT SENDING IN DIMES

Why did many towns use pesticides against polio? THEY WEREN'T SURE WHAT WAS SPREADING THE POLIO AND THEY WANTED TO DO SOMETHING Was this effective? IT WAS NOT EFFECTIVE

What researcher committed to developing a polio vaccine did O’Connor meet on a ship in 1951? JONAS SALK

How was this researcher’s planned vaccine different from other vaccines? HE WAS NOT GOING TO USE A LIVE VIRUS

What researcher was the main opponent of this approach? SABIN

What was the iron lung? A MACHINE THAT HELPED PARALYZED PEOPLE BREATHE

In what year was a major field test conducted of Salk’s vaccine? 1954 What were the results? GOOD - ABOUT 80 TO 90 PERCENT EFFECTIVE

Why did the surgeon general suddenly halt the vaccine program? BECAUSE THERE WAS A BAD BATCH AND CHILDREN WERE GETTING POLIO FROM THE VACCINE

What happened to the number of polio cases in the years after vaccines were widely distributed? IT DECREASED SUBSTANTIALLY

When was Sabin’s vaccine ready? 1962 What advantages did it have over Salk’s? YOU COULD DRINK IT

In what year was polio declared eradicated in the United States? 1973
 
Last time I posted about polio, I recommended 3 books. I just requested them from the library and I thought I'd list them again here:
  • Dancing with Katya by Dori Chaconas - This is Alexandra's favorite and we've read it twice. It's a picture book about a girl whose little sister develops polio. They used to go out by the pond to dance and the big sister wonders if her little sister will ever dance again.
  • Close to Home (Once Upon America book) by Lydia Weaver - This is a fiction book about a little girl whose mom works for Dr. Jonas Salk as they try to find a polio vaccine. One of the little girl's classmates is crippled from polio and another classmate's mom is terrified that her daughter will get polio so they live with all of their house windows nailed shut.
  • Healing Warrior: A Story about Sister Elizabeth Kenny by Emily Crofford - This book is a true story about a nurse in Australia who makes up her own method of treating patients with polio... and is successful.
And, Joan Headly left a comment on my post recommending the following book:
  • Small Steps: The Year I Got Polio by Peg Kehret
P.S. Here's another site we are enjoying: Whatever Happened to Polio? There is even an online game about people with disabilites in 1955 verses 2005.

Friday, April 30, 2010

Oil Spill Lesson

Today, Alex and I are learning about the oil spill in the Gulf Coast. I have found a "new" blog that I follow,  Free Technology for Teachers. I have already used resources from this site several times since I found it about a week ago. Anyway, from this site I found a link to CNN Student News with a report about the oil spill. (By the way, I think we'll start watching the new report each morning. They have about a 10 minute news report and I think it'll be a great way to keep up with current events.)


 Next, we did an experiment I found at How Stuff Works.  Alex helped me write up the rest of this post:

Procedure: We took two ice cubes and put one in each ziplock bag. Then, we took two cottonballs and soaked them in oil. We put 1 oil soaked cottonball on a plate and another oil soaked cottonball on the ice cube (in the baggie).  We took 2 dry cottonballs and did the same thing.


Results: Twenty minutes later, the results were that the oil soaked cottonball on the ice cube was much colder than the cottonball that wasn't in oil.

What we learned: We learned that animals with oil on them get colder than animals without oil on them.

Some of the reasons animals die from an oil spill include:

  • poisoned by the oil

  • birds can starve to death because they can't fly to catch their food

  • their food dies

  • some freeze to death
Some ways to clean up an oil spill include:
  • use special machines to vacuum up the oil
  • use rubber barriers around the spill which isolates the oil
  • absorb the oil using sponge-like pads which act somewhat like a cottonball

Wednesday, April 14, 2010

Any Ideas for Co-op Open House?

I will be teaching at our co-op for the first time next year. I'll be teaching RS4K Chemistry Level 1 to 4th through 7th graders. I'll also be using some of their KOGS.


So, here's my question. We'll be having an Open House next week and each teacher will have a table. Most of the teachers have taught before and are bringing sample of what they've done, photos, even boards with all of the information on them. Well, since I've never taught this class before, I'm struggling with what to put on my table &/or board! So, far I don't even have all of the books!

My plans at this point are:
  • a copy of the text book - borrowed
  • I printed the 1st chapters of the KOGS I'm using (free off internet) and will put them in folders with a see-through cover
  • brochures describing my 2 classes (chemistry and KOGS) and my background - for those of you who don't know, I was a public school middle school science teacher and I have 3 semesters of college chemistry
  • a cool copy of the periodic table I have by Theodore Gray, though it might be too large
  • I might see if I can borrow some chemical models
I've thought about displaying some science equipment, though I'd have to buy or borrow some. Or even doing a few experiments this weekend and taking photos - though they wouldn't be from the book. We'll have several Open Houses, so I would probably make a board (like a science fair board) if I came up with enough "stuff" to put on it.

Thanks for any ideas! - Dana

Wednesday, September 30, 2009

The Elements Book

We have enjoyed a poster of the elements we bought which was made by Theodore Gray. He has now published a book, too, and it looks great! Alex and I have enjoyed this video.

Tuesday, September 29, 2009

Recent School For Us

I've kind of been blogging sporadically lately. And, I decided not to keep a separate blog for nature, so I just imported those posts onto this blog. Which, by the way, was really easy to do! We're now in our 5th week of school and things are going pretty smoothly.

We used some of Jimmie's ideas for math and worked on prime numbers by making a Sieve of Eratosthenes.
 

We are also currently using a new math curriculum that is online. I just print it out! I enjoyed this exercise. Using these numbers, 4, 3, 2, 0, 0, & 0, Alex was supposed to make 2 different numbers that met certain criteria. For example, she was to make two 6-digit numbers that were divisible by 100. Or, two 6-digit numbers that were divisible by 10 but NOT 100. I love how this program is really making Alex think!


Here is another activity we did in math today. The exercise was about plotting on a Cartesian coordinate, which Alex is actually pretty good at. But, the exercise had students in their desks stand up if they were seated in (1, 3) for example. Well, we set up a BUNCH of WebKinz and then Alex had to tell me which animal was at a certain location. She made up a 2nd game where we threw a WebKinz and at the "class" and had to tell what location that WebKinz was at. If we got it right, that WebKinz went in our pile. We had a lot of fun.

                                     

Here's a few more items we added to our Mystery of History timeline.

                                              

Here's a project Alex did for one of her "outside" classes. They are using Story of the World 1. They were to use heiroglyphics or cuneiform and remove some words from a famous saying and replace them with one of these forms of writing. I like the quote Alex used: "They are able because they think they are able" by Virgil.
                                                

And, here's a little science Body Bingo game we printed out from Ellen J McHenry's Basement Workshop. She has some GREAT free products to download. And, she has some great looking products for sale, too!

Tuesday, August 25, 2009

Telescopes & Lenses

We started back to school yesterday and one of our fun activities was to put together our Galileoscope which we received earlier this summer.

A couple of weekends ago we went to a state park for a night of games, marshmallow roasting, insect watching, and stargazing. I loved looking through these telescopes. I've only done that a few times before and we got some great views this night. Too bad the Perseid meteor shower was pretty much over!

Here's a photo of Alex roasting marshmallows that night. The whole evening was a lot of fun, though hot!
One of the neatest things abou the Galileoscope, is that you get to put it together YOURSELF!!! So, you can find out how it works! Alex and I enjoyed playing with the lenses and the challenges of putting together the telescope.
When we were done, it worked! Though you can't hold it as Alex is here - every little movement is like an earthquake and everything is very blurry. We actually need a tripod, but when I laid it flat on a table it worked. We haven't used it on the night sky yet - just around the yard - but we will give it a try when it isn't cloudy!


Last night, I gave myself a little refresher course about lenses so I could teach Alex. In this photo, she has one convex lens and one concave lens.


Today, we talked about convergence, divergence, refraction and reflection. We also watched a BrainPop video about telescopes which discussed the differences between reflecting telescopes, which use mirrors, and refracting telescopes, which use lenses. We also used a drop of water on a piece of SaranWrap to imitate a convex lens. Altogether, this has been a great study and I'm trying to decide where to go next with this Rabbit Trail.

Wednesday, July 08, 2009

Happy 4th Birthday to...

MY BLOG!!!
I started this blog 4 years ago as Alex was starting kindergarten. I thought for my blog's birthday, I'd post some photos from that first semester of kindergarten. (Many of these have to do with the Galloping the Globe curriculum - still one of my FAVORITE all time curriculum!)
a play dough model of the earth
the Eiffel tower

3 states of matter
FIAR snowman
leaning tower of Pisa
the Wright brother's Flyer
painting like Monet
building a pyramid
an "insect" dessert
learning about bee pollination... with Cheetos & a 'bee' finger!
So, where did the years go? Alex looks so young to me in these photos. I am so grateful that I not only took lots of pictures, but have been blogging about our experiences! I made her kindergarten years into a book and some day I need to do the rest of her school years. Maybe that can be my "August project."
 
I'd love it if you'd leave me a comment on this post so I can get an idea of how many people are reading my blog. Thanks to you all!!! I don't think I would still be blogging after 4 years if I didn't feel like people were reading it, enjoying it, and hopefully learning from it occasionally or getting an idea to try. Thanks for reading!!!

Saturday, May 02, 2009

Zap! Surgery

Yesterday, we went to The Health Museum to visit the Zap! Surgery: Beyond the Cutting Edge exhibit. Before our trip, we spent some time learning about the 5 surgical techniques that were highlighted by this exhibit.


ENDOSCOPY - For endoscopy surgery, the surgeon uses a small tube which they insert into the body through a small incision. The tube has a camera on it for viewing and for taking photos. They might also have something on it to take a biopsy or retrieve a foreign object. It is minimally invasive and patients often receive consious sedation.

Online, we watched a few short YouTube videos which used endoscopes. And, we discussed the time I went to the ear, nose, and throat doctor and we both got to watch as the doctor put an endoscope through my nose and down my throat to have a look around. She was able to watch that video and remembers it.

This was one of my favorite exhibits at the museum because we got to pretend like we were surgeons and try to manipulate items as a surgeon would.

GAMMA KNIFE - This is the techinque I was least familiar with. Basically, this is used to treat brain tumors. They put a kind of hat on the patient that has 201 holes. They decide which holes they need to shoot the radition through to kill the tumor while not damaging healthy tissue.

Before we went, we watched the BrainPop video about the electromagnetic spectrum to learn about gamma rays.

On one exhibit, we were able to figure out which of the "holes" (we only had about a dozen) we needed to use to kill the tumor without damaging the healthy tissue. Our surgery was a success!

LASER SURGERY - We watched a BrainPop video about lasers which led us to talk about some of the uses of lasers - holograms (we found out there is a store in Houston and wanted to go, but didn't make it), Lasik (which led us to discuss that Alexandra's great grandpa had Lasik), bar codes (we see these all the time, right?) and to play with your pets (we might pick up a cheap one at the pet store)! I also learned that laser is an acronym that stands for Light Amplification by Stimulated Emission of Radiation.

At each exhibit, you could watch a short video about the type of surgery (about 3 or 4 minutes). There were usually several options and she chose the "tattoo removal" video. Pretty neat!

ULTRASOUND - We looked at Alexandra's ultrasound image from her baby scrapbook. And, we watched a video about ultrasounds at How Things Work.

At the exhibit, they talked about how ultrasound can be used to break up kidney stones in a process called lithotripsy. The patient actually lies in a water bath and the ultrasound waves are aimed at the kidney stones until they are broken into small enough pieces.

CRYOSURGERY - This is a method where you super freeze tissue to kill it. We talked about how I've had this procedure to remove a few things from my skin and that "yes", it does hurt.

They had a very COLD room where you could watch a short video about cryosurgery.


They had a Zap! Jr room where they had even more hands on activities set up. Alexandra and I enjoyed playing a very large game of Operation!

We also went on a "ride" where you went through a body and saw some things that needed surgery. It was one of those little "vehicles" that moves in all directions and kind of makes you sick. :-) This was Alexandra's favorite part of the day!

It wasn't part of the Zap! exhibit, but I enjoyed the Cells 4D video - very cool graphics and it reminded me of a lot of things I studied many years ago. :-) In the 4D theater, they have lights that flash all over the room, breezes (strong winds!) that blow, and you even get wet! It's quite the experience. (Oh, and we watched a BrainPop video about "cells" before we went. We should have watched "immune systems" and "mitosis", too. )

Thursday, April 30, 2009

Galileoscope

In 1609, Galileo became first person to use a telescope to look at the heavens. He discovered sunspots, and craters and peaks in Earth's moon. (taken from this site)

As part of the International Year of Astronomy (2009 - the 400th anniversary of Galileo's telescope discoveries), you can buy a Galileoscope for just $15 plus shipping & handling.

To enable more people in more places to personally experience the wonders of the universe, we've developed a remarkably inexpensive, very-high-quality, easy-to-use refractor. With this new instrument, called the Galileoscope, children and adults can learn how telescopes work and repeat for themselves the spectacular observations made by Galileo beginning in 1609.

I love that this is actually a kit so we can learn more about the inner workings of a refractor telescope. And, you can donate a telescope (or telescopes), too. The kits are expected to arrive in mid-June and there are educational guides available. I can't wait to get ours!

Wednesday, April 15, 2009

Dragonfly Nymph

Today, we had 2 classes at our museum. One of the classes was about life in a pond -and we were they ONLY ones who showed up! I was glad the teacher was fine with this and went ahead and did the class for us. We really had fun!
She talked about the parts of a pond and what lives in the different areas. But, we had the most fun actually LOOKING in pond water. We used microscopes and saw some incredible creatures.
Alexandra's favorite "critter" was this dragonfly nymph. Isn't he great? And, he was about an inch and a half long! I enjoyed reading about the dragonfly nymph at this Dragonfly Site.
"Once the dragonfly eggs hatch, the life cycle of a dragonfly larva begins as a nymph. A nymph looks like a little alien creature. It hasn’t grown its wings yet and has what looks like a crusty hump hanging onto its back. Dragonfly nymphs live in the water while they grow and develop into dragonflies. This portion of the dragonfly life cycle can take up to four years to complete, and if the nymph cycle is completed in the beginning of the wintertime, it will remain in the water until spring when it is warm enough to come out."
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