Saturday, January 23, 2010

The Scientific Method

So it came up this week that Tex has the Scientific Method as a part of his Scouting requirements, and although they get a healthy dose of it from The Mythbusters I'm always happy to take opportunities to use it in real life. So. Noodle is a nut for "experiments". This mostly just means mixing stuff together, and it doesn't even have to be sciencey (yes, it's a word, so hush) stuff, it can just be bubble bath and water. But on this particular day he wanted to repeat the experiment of the day before by mixing baking soda with various liquids to see which ones could make it bubble the most. He though chocolate and strawberry syrups mixed together had a good chance at the title. So we chose five liquids: the syrup mixture, fresh lemon juice, pasteurized OJ, honey, and filtered water. Noodle helped set up five separate samples of baking soda, and Tex joined in at this point to help me use litmus papers to test each liquid. The fresh lemon juice got the biggest reaction, turning the litmus paper a dark red almost immediately. Next on the list was the OJ, while the syrups, honey, and water all appeared to be rather neutral. We devised a system to rate the reactions, listing a "1" as no reaction, a "2" as a mild bubbling, and a "3" as a very fizzy reaction. After adding water to one sample of baking soda and recording a "1" reaction, we dipped litmus paper in the solution and it immediately turned a deep bluish-green.
Then the real fun started! The honey and syrups had to be thinned with water after our initial attempts resulted in little baking soda-covered balls of viscous liquid, but still rated as "1" reactions. The pasteurized OJ was rated a "2" for its light fizzing. The lemon juice was the clear winner with a big, bubbling foam that threatened to overtake its container! Then Tex and I wondered if fresh orange juice would have a different reactions than store-bought, so I grabbed what I thought was an orange and sliced it open only to find that it was really a grapefruit. Oops. Well, no matter, the Mythbusters make mistakes all the time, so we decided to include fresh grapefruit juice in our sample, too. We then squeezed some fresh OJ and tested both with litmus paper. The color of the litmus paper dipped in grapefruit juice was quite as dramatic as the lemon. The orange juice was less so, but more acidic than the pasteurized variety. Tex and I compared the blue base paper with the red lemon paper and noted that the biggest reactions came when combining the substances that had the most dramatic color changes, and from that he predicted that the grapefruit juice was going to have the biggest reaction of the two new liquids, but that the fresh OJ would have more of a reaction than the store-bought. And boy was he right! Noodle couldn't get over the fizz of the grapefruit juice and had a blast mixing it with baking soda, then mixing the lemon and grapefruit juices and adding them together. Two happy guys. :-)

Thursday, January 21, 2010

Just keep learning, learning, learning

I love this life. There is nothing better than being able to have my children around me and watch them learning. Sure, there are days when I would happily duct tape them all to the couch just to get a half-hour of uninterrupted Quiet Time, but I can wait a couple years until they're more capable of giving me that gift. ;-)

Only problem is: if I don't blog more often, I totally forget all the stuff I was going to mention! We've done SO much the last few weeks since getting back into our homeschool schedule after the holidays, and I'm going to try to remember as much as I can.

We got a microscope for Christmas, and it has already yielded hours of entertainment and learning. It is a compound microscope, so it can view both slides and 3-D objects with its different light sources. We've examined the difference in crystals between table salt, kosher salt, and sugar. We've looked at dead bugs up close. Today Tex and I made our own slide with mold from an old croissant (it's not bad housekeeping, it's science!), and another with water from the toilet (nothing in the water moved, which I found wonderfully reassuring), and plan to get some pond water next time we're out and about, and examine it for beasties.

Noodle was busy experimenting with some acids and bases to see what happens. Tex bought some Pucker Powder at the science museum last week and I noticed that a main ingredient was citric acid, aka the stuff that Noodle likes to mix with baking soda and water and watch it bubble. Noodle begged and pleaded and got Tex to part with one teaspoon of his Pucker Powder to see what sort of reaction it would yield. Unfortunately it didn't do much other than make colored water, but it was worth a shot! We then moved on to squeezing lemon wedges onto the baking soda, and that got a much more exciting reaction! So much fizzing! Noodle was very happy until he discovered that lemon juice and cuts on one's finger do not mix well. Sometimes science hurts. :-(

What else? Well, a couple weeks ago we had an Alabama snowstorm, which means we had actual snow that stuck on the ground and could be made into snowballs and tiny snowmen. Of course the kids had a blast, and we got out our magnifying glass to observe the crystal formation in the snowflakes. We were also completely tickled to discover that one of our nearby ponds was completely frozen over, a phenomenon I've never seen in this town. We went to explore and see how thick the ice was. I thought it couldn't be more than an inch, but after banging and digging with sticks and rocks for a good while we had to stop because we couldn't get farther than about 3 inches deep. Knowing it was that thick, I decided we could risk a little "skate" around the rim where I could actually see the dirt and grass underneath the ice. We talked about ice safety and listened to the faint creaks from the ice as we walked around the edge. The boys would have stayed all day but MonkeyGirl thought landing on her bottom on the cold, hard ice lost its luster after about a dozen times.

We've also been making a concerted effort to be sure the kids get their "P.E." every day. Of course some days that's as easy as going to a park and letting them run and climb until they're sweaty and worn out, but Tex also attends a homeschool P.E. class at the YMCA every week and attends Little Gym's homeschool class once a week as well. He's really improved his body strength and can now do a pullover on the bar and a straddle roll, and in P.E. he's started making home runs in kickball and doing better on the Presidential Fitness events. We have also begun, as a family, to use our new Wii Fit Plus that we got for Christmas every morning. Tex especially loves it and gets some good aerobic exercise doing the hula hoop, short jogs, and obstacle courses. It's a nice way to get him moving first thing in the morning.

And finally, our reading progress. I mentioned that Tex had finally had his lightbulb and realized that he could read, but I think he's been a little disappointed that every word isn't easy to read. So I mention to him that he's going to have to practice to get better at it, which is usually met with a rant about how "I don't like reading, I'm never going to read, you're going to have to read to me forever!" LOL But the other night when he lamented that he couldn't read Star Wars on his own and had to wait on pokey ol' Mommy, I mentioned it again, "honey, the more you practice reading, the more confident you'll be, and the more you'll be able to read, and before you know it you'll be flying through whatever books you want to." He seemed to think about it for a moment and then said, "ok". And since then he's been doing more spontaneous reading on his own and not taking it so badly when he's not immediately correct. We even, Tex, Noodle, and I, played gummi words for about 45 minutes yesterday and they both did amazing. I bought these cards designed to help you recognize "word families", so they have things like "___ight", or "___ump" on them. So then we just took our gummi letters and made "bright", "light", and "plump rump" (Tex's favorite). Even Noodle was doing great with the families like "_at" and "_ig". I wouldn't be at all surprised if they were both reading independently over the summer!

Better late than never

Here's an entry from Daddy-O about a pre-Christmas trip to Atlanta:

Brownie and I decided to break up the trip to Atlanta (technically, Gwinnett County/Lawrenceville/Duluth) by stopping at the Tellus NW Georgia Science Museum. For being next to the middle of nowhere, that place ROCKED! There was a gorgeous collection of prehistoric creature skeletons (including a T-Rex, Edmontosaurus, and mosasaur), huge minerals/crystals, many planes, trains, and automobiles...and the little kid section was pretty big. Thanks to our having a membership to the science museum here in town (which is very mediocre and basically a scienced-based, educational, indoor playground), we got in to the museum for free. It was an absolute hit for the whole family and will likely become a regular stop whenever we travel to ATL.

Brownie here: Tex and I spent some quality time with the skeletons of prehistoric creatures. I asked him to explain to me the difference between bird-hipped and lizard-hipped dinosaurs and we went around the room classifying each. We found that the pterosaur had a completely different-looking pelvis than any of the other skeletons. And we learned that dunkleosteus is pretty intimidating even when he's a fossil. After that the kids had a blast excavating dinosaur skeletons and especially enjoyed the water feature where you get to "pan for gems". Tellus has little bits of lapis, tiger eye, quartz, jade, malachite, jasper, and other shiny bits buried in sand, covered by running water, and you have to scoop some up and find the gems buried inside. We left with a small bagful that they are planning to use to decorate a small trinket box or something similar.

Friday's big adventure was to drive to I-285, hop onto the MARTA rail, take it to Midtown, visit the Federal Reserve Bank, and back. In case you didn't know, it was raining like crazy on Friday. Thankfully, the MARTA station was only half a block from the Federal Reserve so it wasn't far; but even after hanging out at the visitor's center for about an hour, our clothes were still quite damp. Then we had the pleasure of running back through that rain to the station. But since the Fed was free, two of the three kids rode the rail for free, and parking was free, it was a fun, educational activity to fill the day with the boys. While the Federal Reserve was our "destination," Noodle's primary interest was in riding his first subway car. He was been very interested in the driving capabilities in the Sim City 4: Rush Hour set. He loves to build a city of infrastructure and then drive/pilot cars, trains, planes, and boats on the screen. The anticipation of finally riding in a subway train had Noodle absolutely giddy.

Friday and much of Saturday was spent at the relatives' home. Well, more specifically, in their basement. They had the Wii set up there and it was the boys' first exposure to RockBand/Beatles RockBand. After all the playing, Tex has been singing numerous lines from the songs. Although he had mild interest in "Ticket to Ride" and "Drive My Car" a couple of years ago, the only songs he actually sings to himself are ones from Depeche Mode and Duran Duran along with "Smoke on the Water." Now he's going around singing verses of "Eight Days a Week" and "Yellow Submarine," and thankfully only a few lines of "I Am the Walrus."

Me again: the kids, especially Tex, have really been enjoying singing lately. Tex is getting more confident with singing aloud in the car and even when he's listening to music in his headphones. He does pretty well! I'm toying with asking him whether he'd be interested in singing with the children's choir at church.