Again, as an adult looking to find something to be outraged at, you are far overthinking the problem. You assume those kids don't understand what that week's math lessons were about. And therefore what any quiz/test would be about at the end of the week. All of them would have been coached all week long on what to look for in that quiz/test.
If the teacher was so wrong, explain to me how a majority of the students would have understood that question and been able to figure out the correct answer and provided the correct format? Getting one odd answer on one test/quiz in a room of perhaps 20 students is not indicative of a poorly written question or if a teacher is unwilling to admit they were wrong. Odd answers are just generally an isolated issue, unless this is a repeated problem for this student, which would be indicative of a deeper learning issues. Which is something we don't know or can't know in this case.
Your premise would hold value if you knew every student in the classroom got the question wrong or provided the same answer that is shown. But you have no idea if that's the case.
There are other things in this world that deserve to be outraged about. This particular thing ain't one of them.
You miss the understanding that the kids would have been coached everyday for at least a week to look for the fractions and compare them. And not be overly concerned with anything else. The kids aren't stupid, they know that they have spent the week comparing fractions and that's what the test/quiz would cover. I would bet very long money that the majority of the students got the correct answer and those that didn't, simply chose the wrong answer. Still, you do get an oddball answer on occasion. Because young kids are cool like that sometimes. It's a minor thing to correct as a teacher.
As an adult, you are reading far too much into the question because you want to be angry.
Boys in particular, (though girls are not exempt from poor handwriting), will have "poor" penmanship pretty much all through elementary school and even into Jr High. And fractions are generally introduced at the end of the 3rd grade school year. And based on the question, that's the likely grade level that test was created for.
I would bet that most of the students in that class got the answer correct because they were coached to read the question correctly-- to look for the fractions and simply compare them. And anyone else that didn't, simply chose the wrong answer. Still, you will get a surprise answer like that every once in a while because kids are cool like that. It's worth a chuckle as you move on.
I have designed several 3D printed firearms related items.
I designed and printed shims for my Winchester SX4 shotgun, (Winchester claimed they couldn't design them and make them work), and I uploaded the .stls for the set so other shooters could make their guns fit better so they could hit targets better.
I also designed a 3D printed EZLoader for a SIG P365 pistol. Those 12 round double stack single feed magazines are nearly impossible to load without one.
And I felt the commercial ones that cost $40 or more were too expensive. So I designed something simpler and cheaper you can make at home for yourself.
These designs came about because I discussed problems with other shooters on several different shooting forums. Does that make me a criminal? While neither of my designs are anything like a Glock switch, no one knows just how far the law could be stretched if wanted. And one thing everyone knows is just how ignorant police are about laws. Not to mention just how impossible it would be for the state of New York to police the entire internet in search of such files and discussions. They can't even stop you from downloading a pirated copy of your favorite video game. This proposed law is more feel good theater than anything that can be considered effective.
And if what I could do with my 3D printer scares people, just imagine what I can do with my metal lathe, mill, and welders.........
I looked PHA up. Color Fab offers some at a fairly reasonable price, but limited colors. It seems an interesting choice for printing. I do like the heat resistance of >120C. The printing temp range is low and pretty narrow and needs hair spray. I wonder if it's comparable with PEI print sheets.
But it still has a price hard time competing with the $11US per kilo of PLA brands like eSun.
I have used a pizza cutter to cut more than one pizza. I have also wielded a sword, (Ren Fair and fought a dual), and cut pizza with it. I have also field dressed a couple of deer and cut a few pizzas, (along with apples and sandwiches) with a Victorinox Classic keychain pocket knife over the years.
Of the 3 pieces of cutlery, I find the Victorinox Classic to be the most useful.
What catches the trooper's eye and gets you pulled over is doing all those lane changes if you want to be the fastest. That's what is unsafe. Otherwise, they aren't too concerned about the actual speed as long as the traffic is flowing smoothly.
There are firearms related .stl's that can be found, but they are accessories rather than the actual parts that make a firearm function. But there are forums that do discuss and build 3D printed firearms that can be found with some searching.
I've done a couple of designs, shims for a Winchester SX4 shotgun to fit several guns to their owners for target shooting and hunting. And an easy loader for my P365XL. That 12 round double stack single feed clown car of a magazine is hard to load without it. But I haven't bothered to publish either design and I have never wanted to either.
Congtrats! you just made a pipe bomb! And one that isn't as good as a steel pipe You do understand that PVC pipe would not be able to contain the pressure of even the most anemic cartridge don't you? Even a 1" schedule 80 PVC can only contain up to 520PSI @ 73F. Modern Cartridges easily generate 12,500PSI for a light shotgun target load of birdshot.
I don't know about how much fat it might take, but my 2 knee surgeries and both my deteriorating hip joints, (been searching eBay for a good used hip joint for cheap), tell me that standing for 2 hours is a painful idea.
Well, beyond the sheer social resistance to the idea. Turns out everyone needs to agree it's a great idea and almost no one did. Evidently humans are wired to the base12 time format far better.
The attempt at switching to base10 time quickly fell apart when people started notice that the the "time markers" were starting to drift. And at some point they finally figured out that what we call "noon" was going drift rather quickly to not happening until evening and therefore Monday was going to move to a different spot also. This is a very bad thing. Because any kind of calendaring system needs to be as consistent as possible. Noon must happen at the same point in the day every day or as close to it as it it can mathematically get. If it drifts to fast and far, then it's a worthless marker for time. And decimal time has that problem in spades.
Now, no calendar system is perfect because the orbits of the planets in our solar system isn't perfectly consistent. Sometimes the orbit of earth is a tiny bit faster or sometimes it's a tiny bit slower. So we strive to get a close as we can but we still need to make adjustments. Turns out, all that math is really bloody hard.
It's part of a joint for the handle of an electric snowblower I have. It's a cool looking part for sure, but it was easy to recreate as a model to print.
But after breaking the original injection molded glass re-enforced nylon and 3 other home printed parts, I redesigned the joint to be a single piece solid part. So while I can't fold the handle down for storage, it no longer breaks.
I paid $35 delivered from Russia. And honestly, I do not remember if that was a sale price or not because it's been enough years ago now.Despite all the cheap quartz watches found in Walmart, $140 really isn't all that much for a properly made manual wind watch these days. Even a plastic Timex will set you back nearly $120 for a quartz LCD with 24 hour display and only one choice of looks. So I probably wouldn't consider the price out of line for the Komandirski with multiple choices available.
A Bespoke 24 hour mechanical movement would be quite the piece of horology art. A conversation started indeed.
Sometimes you have a run in with a customer that ain't worth having-- no matter how much money they pay.