Archived School textbook sales leader says Common Core is 'all about the money' (dailymail.co.uk)
submitted ago by Kar98
Posted by: Kar98
Posting time: 4.9 years ago on
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Archived on: 2/12/2017 1:51:00 AM
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151 upvotes, 7 downvotes (96% upvoted it)
Archived School textbook sales leader says Common Core is 'all about the money' (dailymail.co.uk)
submitted ago by Kar98
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[–] Thin_White_Duke 1 point 2 points 3 points (+3|-1) ago
No shit, Sherlock. There is nothing different about basic math than there was 10...20...100...etc. years ago. I wonder if a lot of districts were getting wise to the new editions being pumped out every year so the powers that be were lobbied into requiring this bullshit.
My future kids are going to have a leg up on these poor souls who don't have parents who know better. Add to it my insistence on teaching them personal finance and they will hopefully have a bright future ahead of them. Help give your kids the help they need, don't let them get frustrated into giving up. Encourage it from a young age and help spur it on through adolescence.
[–] thrus ago
I was taught to memorize some times tables but my dad told me it was a waste with 9s (0-10) as they are so easy to solve 0, 1, and 10 are simple of themselves. for the others they are all 2 digit answers the fist digit is the number -1 the second is 10- the number: take 7, 7-1=6, 10-7=3, result is 63. those two things replace memorizing 8. awkward at first and completely confuses most teachers if you show you work but very effective when you get the hang of it.
[–] Aboresh 0 points 1 point 1 point (+1|-0) ago
I always remembered that the two digits for the multiples of 9 added up to 9.
[–] Thin_White_Duke 0 points 1 point 1 point (+1|-0) ago
That's clever. I never had a problem memorizing multiplication. I think we did it in 3rd grade and had to go to 10. I made it up to 15 or 16 because I was the only one done before I decided to just stop. For 9s I just remembered that there is a reverse of that number later on:
9x1 = 09; 9x10 = 90 9x2 = 18; 9x9 = 81 9x3 = 27; 9x8= 72 9x4 = 36; 9x7 = 63 9x5 = 45; 9x6 = 54
Sometimes it really is about finding a pattern.
[–] svipbo ago
You want to know a trick to know the last digit for any times table entry? Take the complement of each number with 10, and the last digit of the product is the same.
For example: 8 X 6. Difficult, huh? But wait: 2 X 4 = 8. This reminds us that the answer is 48.
[–] TheTrigger ago (edited ago)
Hold out your hands, like you're trying to stop a rapist in Cologne. 9x7? Fold down the second finger on your right hand. Number of fingers on left side of folded finger = left digit. Number of fingers on right side = second digit.
This works for all of them.