Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Easy Speed Math they Don't Teach You in School - Part 5 - Squaring
youtube.com ^

Posted on 08/06/2017 1:42:54 PM PDT by RoosterRedux

Easy Speed Math they Don't Teach You in School - Part 5 - Squaring

Much fun.


TOPICS: Science; Weird Stuff
KEYWORDS: frhf
Navigation: use the links below to view more comments.
first 1-2021-4041-60 next last

1 posted on 08/06/2017 1:42:55 PM PDT by RoosterRedux
[ Post Reply | Private Reply | View Replies]

To: RoosterRedux

I love math...but I didn’t know this. Much nerd fun.


2 posted on 08/06/2017 1:43:32 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 1 | View Replies]

To: RoosterRedux

Years ago I tried to learn the Trachtenberg system of system of speed math. I still couldn’t get it!

I thought heaven had come down to earth when the first hand held calculator went on the market.


3 posted on 08/06/2017 1:55:11 PM PDT by Ruy Dias de Bivar
[ Post Reply | Private Reply | To 1 | View Replies]

To: Ruy Dias de Bivar
I completely agree.

I didn't know I was good at math until my friend loaned me his Texas Instruments calculator in grad school.

Everything changed. The world became a simpler place.

4 posted on 08/06/2017 1:57:28 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 3 | View Replies]

To: Ruy Dias de Bivar
I think the tedium of math must keep a lot of people at bay.

I am much better at math once the adding, subtracting, multiplying, and dividing are done away with.

The concepts are clean and clear without the bothersome details.

5 posted on 08/06/2017 1:59:40 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 3 | View Replies]

To: RoosterRedux

AWESOME!!! Thanks for sharing. I could have gone to UIL math if I’d have known this, LOL!!


6 posted on 08/06/2017 1:59:41 PM PDT by YouGoTexasGirl
[ Post Reply | Private Reply | To 2 | View Replies]

To: RoosterRedux

When I was young I liked math and scored 99th percentile on the Florida Senior Placement Test. That was as high as one could score.

I recently bought a nice TI calculator and could not even figure out how to work it.

On the other hand my verbal skills do not seem to have gone down.


7 posted on 08/06/2017 2:03:16 PM PDT by yarddog (Romans 8:38-39, For I am persuaded.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: YouGoTexasGirl
Check out the whole series by this youtuber. They are all good but I am not sure about their value for math students.

I worried at first about whether teaching a different technique my confuse students. But now I don't know.

I love math but didn't know I was good at it until a friend loaned me his calculator in grad school.

I became a wiz once I could get rid of the tedium.

8 posted on 08/06/2017 2:03:45 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 6 | View Replies]

To: Ruy Dias de Bivar

I thought heaven had come down to earth when the first hand held calculator went on the market.


My first year of college in the early 60s calculators first hit the market. You could get a four function calculator for only 500 1964 dollars. The STEM students all had slide rules they wore sheathed on their belts.


9 posted on 08/06/2017 2:07:02 PM PDT by hanamizu
[ Post Reply | Private Reply | To 3 | View Replies]

To: yarddog
Keep working on the TI calculator. It is possible that your calculator resolution skills are inhibiting your math skills.

Let nothing get in the way of you and your potential.

Not to sound corny, but God made you special...a genius in your own way.

Your challenge is to discover your God-given genius and to exploit for His sake (and the world's and yours)

10 posted on 08/06/2017 2:07:59 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 7 | View Replies]

To: RoosterRedux

Nice! Thanks for posting.


11 posted on 08/06/2017 2:07:59 PM PDT by MV=PY (The Magic Question: Who's paying for it?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: RoosterRedux

Way cool, thanks !


12 posted on 08/06/2017 2:09:52 PM PDT by ADemocratNoMore (The Fourth Estate is now the Fifth Column)
[ Post Reply | Private Reply | To 1 | View Replies]

To: hanamizu

My first year of college was in 1973 — the year they eliminated slide rules in Chemistry. By then a four function TI calculator cost 80 bucks, but I found a used one for half that. The next year four function digital watches were available for five bucks.


13 posted on 08/06/2017 2:11:10 PM PDT by Jeff Chandler (Everywhere is freaks and hairies Dykes and fairies Tell me where is sanity?)
[ Post Reply | Private Reply | To 9 | View Replies]

To: RoosterRedux

loved it. thanks.

I would like a “deep” math lesson that demonstrated to me WHY this little “trick” works. That - even more “nerdy”, yes, would be very interesting as well.


14 posted on 08/06/2017 2:11:24 PM PDT by Wuli
[ Post Reply | Private Reply | To 1 | View Replies]

To: hanamizu
I started grad school in '73 and a friend loaned me his TI.

The world of mathematics came alive.

And now with MSExcel...I could live in this math world and never get tired or stop learning.

All that said, I do believe that math is God's handiwork...and His gift to me and others.

Math is too perfect not to have a Creator.

It isn't random. It is designed...and carefully--perfectly--so.

15 posted on 08/06/2017 2:13:14 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 9 | View Replies]

To: Wuli
That's what I was thinking. Perhaps you will do it.

Ping me when you do.

I will do the same if I perchance do.;-)

16 posted on 08/06/2017 2:15:07 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 14 | View Replies]

To: RoosterRedux

I’ve seen similar videos which I found interesting, but the traditional methods are actually shortcuts compared to these esoteric methods.

What is truly a waste of time are the “NEW” “ENLIGHTENED” methods such as the old NEW MATH and the crap Common Core shoves down teachers’ throats. The time spent screwing around with this nonsense would be better spent in practice, which builds automaticity. Once you just KNOW the results of fundamental computations, you can discard all the methods. Then higher math is a breeze.


17 posted on 08/06/2017 2:17:10 PM PDT by Jeff Chandler (Everywhere is freaks and hairies Dykes and fairies Tell me where is sanity?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: hanamizu

The first calculator I ever saw was in a psychology class around 1971. The professor who had just arrived from England said he was surprised to find the department had one.

He passed it around for all of us to see. I have no idea what the functions were but he said it was very expensive.

I think it was around the size of a hymnal.

In 1974 I bought a basic scientific calculator from Sears for $69. It was reduced. It still works and has beautiful green numbers which are easy on the eye.


18 posted on 08/06/2017 2:18:52 PM PDT by yarddog (Romans 8:38-39, For I am persuaded.)
[ Post Reply | Private Reply | To 9 | View Replies]

To: Jeff Chandler
I think the New Academia (Liberal Academia) doesn't want students to know math.

Their objective is control...not enlightenment.

Control requires ignorance of the Truth.

I see a portrait of Obama staring up at the stars with a glint in his eye.

All a lie...but nicely packaged.

19 posted on 08/06/2017 2:22:01 PM PDT by RoosterRedux
[ Post Reply | Private Reply | To 17 | View Replies]

To: RoosterRedux

Thanks. It is a TI-nspire cx. It has an unbelievable number of functions.

The real problem is that it did not come with instructions. You are supposed to look them up on the internet and I hate that.

Would much rather have a book of instructions like they used to come with.


20 posted on 08/06/2017 2:22:19 PM PDT by yarddog (Romans 8:38-39, For I am persuaded.)
[ Post Reply | Private Reply | To 10 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-4041-60 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson