Month: July 2014

Friday, 11 July 2014

09:39 – Barbara is meeting her sister after work for dinner and then making a supermarket run. Colin and I will have leftover gloppita and watch Heartland reruns.

Friday is my least-favorite morning. We get garbage pickup on Friday mornings. The garbage truck periodically compresses the garbage and then drips garbage juice the whole way down the street. Trying to walk Colin is about useless because he insists on pulling his way down the street, snout to the pavement, tracking the garbage truck. What’s worse is that he isn’t content to sniff; he licks the wet spots on the pavement. Colin lives to track, and he doesn’t care what he’s tracking. Any thought of doing what we’re actually out there for couldn’t be further from his mind. So on most Friday mornings, I have to walk him at least twice as far as usual before I can get him to do anything. And he’s slower than usual because he’s sniffing constantly. His first walk on a normal morning takes maybe 15 minutes. This morning, it was 40 minutes.


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Thursday, 10 July 2014

07:55 – UPS showed up yesterday with an order from Costco, a dehumidifier and a case of canned beef. Barbara hadn’t decided what to have for dinner, so I called her and said I’d make dinner from our emergency food stocks. That always makes her nervous–she doesn’t trust my cooking experiments–but she finally agreed. So I just made a simple casserole with some rice, a can of the beef, a can of beef broth, and a can of corn. It turned out well, as Barbara admitted. The next time I’ll use twice as much rice, which’ll make enough for two meals.

At this point, I’m still spending half my time building and shipping science kits, the second half working on the new AP Chemistry and Earth Science kits, and the third half doing everything else that needs to be done.


11:10 – Do Not Call has become a complete joke. For a while it kind of worked. For the first couple or three years after it went into effect, we got noticeably fewer spam phone calls than we’d been getting. But it’s been getting worse gradually, and recently not so gradually. We’re at the point now where we’re getting 20 or 30 spam phone calls a day, many of them from a vacation scammer who uses Orlando, FL as its caller ID. Enough is enough.

As I said to Barbara last night, I gave up reporting such calls to the FTC. It’s a waste of time because they never do a damn thing to resolve complaints. By this time, there should be a lot of phone spammers sitting in federal prisons. What we really need–and I mean this literally–is for some civic-minded hero to hunt these bastards down and kill them. Maybe someone should start a Kickstarter project to get funding for travel, ammunition, and other incidental expenses. I’d happily contribute and I wouldn’t expect any reward other than reading the news stories about a rash of dead phone spammers.

Last night, I took the extreme step of turning off the ringers on all our phones. Phone spammers hang up without leaving a message about 99.9% of the time. Real callers can just leave a message. I’m trying to get our Panasonic cordless phone system set up to silence ringing but let us hear messages being left on the speakers in the base unit and the phones themselves. So far I haven’t been able to do that, but I think it’s doable.

Barbara suggested just dropping our land-line, which I may end up doing. The only reason we had a land-line was that Barbara wanted it to make sure that her parents could get through to us in an emergency. That’s no longer an issue, so we may just go to cell phones only. The only real problem with that is that our house is down in a hole physically, and cell signals are pretty unreliable. That, and the fact the phone spammers are calling cell numbers more and more often nowadays.

Oh, yeah. To add to my aggravation today, I went downstairs after Barbara left this morning to empty the dehumidifier bucket and found that it hadn’t shut off. There were a couple gallons (~ 8 or 10 liters) of water on the basement floor because the auto-shutoff didn’t work. I looked in the bucket and where I’d expect to find a freely-moving float I found nothing but a rigidly attached piece of white plastic labeled “DO NOT REMOVE”. The manual is useless, so I suppose I should call their tech support line and find out what the problem is. Either that, or just run a hose to outside or to our sump pump.

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Wednesday, 9 July 2014

09:00 – When I walked Colin at 8:15, it was already muggy. The next two or three months are going to be miserable, particularly for furry guys like Colin. It’s no coincidence that all of the South’s big cities were sleepy little towns before air conditioning became widely available. Summer in the South can be pretty miserable.

I’m still struggling with the manual for our AP Chemistry kit. The problem is that the 2013 revision of the AP-recommended labs went from the old 22 labs that were mostly Structured Inquiry to only 16 labs that are all Guided Inquiry. As College Board says up-front, they had to reduce the number of labs because Guided Inquiry labs take a lot longer. They recommend that at least six of those labs, covering a wide range of topics, be done as Guided Inquiry investigations. It’s acceptable to do the others, as well as supplemental labs, as Structured Inquiry. Here are Wikipedia’s descriptions of the four levels of inquiry-based learning:

Level 1: Confirmation Inquiry – The teacher has taught a particular science theme or topic. He or she then develops questions and a procedure that guides students through an activity where the results are already known. This method is great to reinforce concepts taught and to introduce students into learning to follow procedures, collect and record data correctly and to confirm and deepen understandings.

Level 2: Structured Inquiry – The teacher provides the initial question and an outline of the procedure. Students are to formulate explanations of their findings through evaluating and analyzing the data that they collect.

Level 3: Guided Inquiry – The teacher only provides the research question for the students. The students are responsible for designing and following their own procedures to test that question and then communicate their results and findings.

Level 4: Open Inquiry – Students formulate their own research question(s), design and follow through with a developed procedure, and communicate their findings and results. This type of inquiry is often seen in science fair contexts where students drive their own investigative questions.

Obviously, whether by name or not, all four of those levels have their place in science education. The problem in a homeschool environment is that Guided Inquiry requires a guide. In other words, College Board assumes that these labs will be taught by a science teacher qualified in AP Chemistry. Some homeschool parents will meet that requirement, but the majority will not, and will be very uncomfortable in the role of AP Chemistry teacher. On the other hand, we’ll probably sell a lot of AP Chemistry Kits to public and private high schools that do have teachers qualified to teach AP Chemistry.

So I’ve decided on a compromise. I’ll write up all 16 of the core lab sessions as Guided Inquiry labs, which will be all that’s available in the student lab manual. The teacher’s manual will include materials for teachers who are doing the labs as Guided Inquiry, but will also include full alternative procedures for those who decide to teach some or all of the labs as Structured Inquiry. I’ll provide the teacher’s manual in both PDF and DOC formats to allow teachers to cut-and-paste material from that manual to create a modified student manual.

It’s a lot of work, and I’ll have to do this all over again when I do the AP Biology kit.


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Tuesday, 8 July 2014

09:54 – I’m still making up chemical bags, building component inventories so that we’ll have what we need to assemble finished kits quickly as sales ramp up for the autumn semester. If I have all the subassemblies in stock, I can easily assemble a month’s supply of kits in a day or two. The trick is making sure to have all the subassemblies in stock.

But I seldom spend full days doing work like that. So, just having finished binning another batch of chemical bags, I’m going to spend a few hours designing lab sessions and writing the AP chemistry manual.


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Monday, 7 July 2014

09:22 – I need to get some small purchase orders issued for stuff we’re running low on. Things like 2.5 kilos of salicylic acid, ten meters of MFF #43 fabric and 250 g of TIS #1 stain, 50 g or 100 g each of ammonium metavanadate, sulfanilic acid, and diphenylamine, and so on. Most of them are for forensics kits, but some are for biology or chemistry kits.

I also need to finish building another three dozen sets of chemical bags for chemistry kits, which are already in progress. After that, I need to do another two dozen sets each of chemical bags for biology kits and forensic kits, as well as small parts bags for both. Then, of course, I need to build the kits themselves.

Meanwhile, I’m still working on the manuals for the Earth & Space Science kit and the AP Chemistry kit. When I get tired of working on one, I switch to the other for a while.


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Sunday, 6 July 2014

09:02 – I’m beginning to believe that one really can find anything on the Internet. Yesterday, for some reason, I thought about a woman whose name I couldn’t remember, if indeed I’d ever known it. All I remembered was that about 30 or 35 years ago she’d done a series of commercials for No Nonsense pantyhose and that I’d also seen her playing a nurse in one episode of MASH. It took me about 30 seconds to find out that her name is Susan Blanchard. Here’s one of those commercials on YouTube.


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Saturday, 5 July 2014

08:08 – As expected, Colin had a pretty rough evening, with all the fireworks. Around 4:20 p.m. Barbara left to meet her sister and friends for dinner. Colin and I had PB&J sandwiches and potato chips for dinner, and started watching Heartland re-runs. There wasn’t much noise while it was still full light out. I took Colin for a walk down the street around 9:00 p.m. It wasn’t full dark yet, and there was a fair amount of popping and a couple of booms around the neighborhood. Colin was nervous, but he kept walking. Around 9:30, the heavier stuff started. I turned up the volume on the TV to smother some of the noise. Colin lay on the sofa next to me, panting and with his ears down flat.

By the time Barbara got home around 11:15, we’d made it through 7 episodes of Heartland, along with half of the Christmas special. That took us to the halfway point in series four.

Oh, yeah. Long-term food storage note: I made two PB&J sandwiches, one with the last of a jar of Welch’s Grape Jelly that passed its best-by date two years ago, and the second with a jar Barbara had just purchased. The two were indistinguishable. And I’d bet money that the same would have been true had the old jar been ten years past its best-by date.

The dirty little secret that food manufacturers won’t admit to is that their best-by dates, particularly for canned/jarred foods, are completely arbitrary. They set them as short as they think they can get away with because they want to encourage people to throw out perfectly good food and buy more. I’ve been watching this happen for decades, and the expiration dates keep getting shorter. For a lot of products, if you compare the best-by date on a can purchased today versus a can of the same product purchased 20 or 30 years ago, you’ll find that supposed shelf life is half or less now what it was then. It’s a racket, and the upshot is that over the years Americans have discarded millions of tons of perfectly good food.


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Friday, 4 July 2014

Happy Birthday USA!

As you celebrate Independence Day today, please take a moment to think about the men and women of our armed forces, past and present, who have willingly risked, and all too often lost, everything to defend our freedom. I worry about America, but there can be nothing very wrong with a country that continues to produce men and women like them.


The coast apparently got nailed pretty badly, but we’ve seen no effects at all from the hurricane. No rain, no wind, not even any clouds. We’re not doing anything special for the holiday. Barbara is doing stuff in the yard and later maybe some kit stuff. She’s meeting her sister and a friend for dinner and then going to watch the fireworks. Colin and I will watch Heartland reruns until Barbara returns. He’s terrified of thunderstorms and fireworks, so I’ll keep the sound turned up and let him cower on the sofa beside me until Barbara gets home.


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Thursday, 3 July 2014

07:29 – Fourteen months ago, I mentioned that Joe Hester, who lives down the street from us, had been charged with sex offenses against a student in the high school where he taught. This morning’s paper reports the resolution of that case. Mr. Hester was sentenced to a prison term of 7 years and 10 months to 14 years and 5 months and was ordered to register as a sex offender for 30 years following his release. All of that for what I suspect was probably consensual activity with a 15-year-old girl. As Barbara said, the punishment was all out of proportion to the crime. This guy will spend more time in prison than the habitual drunk driver who killed the mother of one of Barbara’s co-workers recently. I don’t know Joe. This all happened very soon after he and his wife bought the house down the street. I’ve only talked with the guy once for a few minutes, and have never done more than shout hello to his wife. But he seemed like a nice enough guy. And now he’s ruined not just his own life, but his wife’s as well.


12:21 – I’ve been dithering for a while about doing an AP Chemistry kit. I’d originally intended to introduce one in 2012, but the College Board had announced that they’d have a completely revised set of AP Chemistry labs in 2013. So I waited on those. I wasn’t happy when I saw what CB had done. They reduced the number of labs and (as far as I’m concerned) dumbed them down considerably.

To do the labs as specified, a homeschooler needs an accurate balance/scale. That’s not a problem. One can buy an electronic scale with 100 or 200 g capacity and centigram (0.01 g) resolution on Amazon for $10. A balance with 20 g capacity and milligram (0.001 g) resolution costs about $20. That’s doable for most homeschoolers. But the new labs also require a visible-light spectrophotometer (or at least a colorimeter) and a pH meter. A pH meter with useful resolution and accuracy runs $100 or more, and even the least expensive standard spectrophotometers start at $500 and go up rapidly from there.

I’d about decided to do a lab kit that covered the new AP Chemistry labs as closely as possible without requiring a lot of expensive equipment, but unfortunately “as closely as possible” wouldn’t have been very close at all. Part of the AP Chemistry lab experience is supposed to be learning to use this type of equipment.

I finally decided to do an AP Chemistry lab kit that uses an inexpensive electronic balance, that $100 pH meter, the $115 Vernier Colorimeter and the $61 Vernier Go!Link interface. The balance and pH meter I already have. I just ordered the Vernier stuff, which should arrive next week. The Vernier colorimeter isn’t a perfect solution. Unlike a true spectrophotometer, which allows varying the wavelength of the light continuously or in very small increments, the colorimeter offers only four discrete wavelengths, but that suffices to teach the important concepts.

I think I can take the balance(s) as a given, but there will be many homeschool parents who do not want to or cannot afford to spend $100 on a pH meter or $176 on the colorimeter and interface. For them, I’ll provide data that I gather myself and that their students can use to graph and analyze as they would if they actually had the instruments. It won’t be the full lab experience, obviously, but it’ll be a lot better than nothing.

I’m also concerned about the dumbing down thing. The truth is that our standard CK01A kit, which we specify as honors first-year chemistry level, is considerably more rigorous than the new AP Chemistry, which is supposedly second-year level. So, I plan to do the AP Chemistry labs as specified, but to fill out the kit manual with additional lab sessions that are actually of appropriate rigor for a second-year chemistry lab course for students who plan to go on to major in STEM at college.

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Wednesday, 2 July 2014

08:02 – Barbara and I are binge-watching series four of Downton Abbey on Amazon streaming. We’ll finish the final three episodes tonight. We generally keep two or three series in progress. Once we finish Downton Abbey, we’ll be down to just Dawson’s Creek on Netflix streaming. We’re about halfway through that, so we’ll add something else, probably The Wire on Amazon streaming.


09:52 – I think Amazon is screwing with me. They “reward” frequent customers by increasing the prices they charge, apparently on the assumption that satisfied customers won’t bother to compare prices. Over the last few months, I’ve noticed that Amazon is getting less and less competitive, so I’ve cut back on purchases from them. I used to check their dynamic pricing changes by getting prices on something while I wasn’t logged in and then logging in to compare the original prices with the logged-in prices. There was sometimes no difference, but quite often the logged-in prices were higher, sometimes significantly so. And even when they aren’t, Amazon often isn’t competitive with other vendors. That “free shipping” they offer with Prime turns out not to be so free, and even their non-Prime prices are often considerably higher than those of alternative vendors.

For example, I just checked this morning to see how much Amazon was charging for Keystone Meats All Natural Ground Beef, 28 Ounce. Amazon wanted $10.77 per can, whether or not I was logged in. So I went over to the Keystone Meats website, where I found that they were selling a case of 12 cans for $80. Even with $20.62 shipping that comes to only $8.39 per can, so Amazon is charging about a 28% premium.

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