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cite="mid:CAA5dAfqF2ZEYrvCYEfETn6Jj_WEapWaXjP2hiYTuyFzWjT4VOg@mail.gmail.com">
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<div>By the way, my daughter's title in the Secretary of Public
Education Office is Financial Technician. I can multiply two
2 digit numbers mentally pretty fast. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Frank</div>
</div>
</blockquote>
I so know the massive slowdown when I go from 2-3 digits (even 2x3)
multiplication... it goes from something mostly intuitive and
barely notational to worse than 50/50 and then acutely beyond if I
go to more digits, though not linear with quantity, superlinear with
exponent/digits.<br>
<blockquote type="cite"
cite="mid:CAA5dAfqF2ZEYrvCYEfETn6Jj_WEapWaXjP2hiYTuyFzWjT4VOg@mail.gmail.com">
<div dir="auto">
<div><br>
</div>
<div data-smartmail="gmail_signature">---<br>
Frank C. Wimberly<br>
140 Calle Ojo Feliz, <br>
Santa Fe, NM 87505<br>
<br>
505 670-9918<br>
Santa Fe, NM</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Aug 8, 2024, 7:11 AM
Edward Angel <<a href="mailto:angel@cs.unm.edu"
moz-do-not-send="true" class="moz-txt-link-freetext">angel@cs.unm.edu</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="line-break:after-white-space">
<div>The following is hard to believe but true.</div>
<div><br>
</div>
Last weekend, I was in line at Walgreens. The older woman in
front of me gave the cashier a $20 bill for a $13.54
purchase. The young cashier was completely unable to figure
out the correct change. After a couple of failed tries, the
older woman tried to teach the cashier how to subtract
$13.54 from $20 but that was a failure. She then tried to
get the casher to add to $13.54 until the cashier reach $20.
When that failed, she helped the cashier add small change
and dollars until she got to $6.46.
<div><br>
</div>
<div>I don’t think giving everyone a calculator is the
solution.</div>
<div><br>
</div>
<div>Ed<br
id="m_8634951496365189856lineBreakAtBeginningOfMessage">
<div>
<span
style="border-collapse:separate;color:rgb(0,0,0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span
style="border-collapse:separate;color:rgb(0,0,0);font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<div>_______________________</div>
<div><br>
Ed Angel<br>
<br>
</div>
<div>Founding Director, Art, Research, Technology
and Science Laboratory (ARTS Lab)<br>
Professor Emeritus of Computer Science, University
of <a
href="https://www.google.com/maps/search/New+Mexico+1017+Sierra+Pinon+Santa+Fe,+NM+87501?entry=gmail&source=g"
moz-do-not-send="true">New Mexico</a><br>
<br>
<a
href="https://www.google.com/maps/search/New+Mexico+1017+Sierra+Pinon+Santa+Fe,+NM+87501?entry=gmail&source=g"
moz-do-not-send="true">1017 Sierra Pinon</a></div>
<div><a
href="https://www.google.com/maps/search/New+Mexico+1017+Sierra+Pinon+Santa+Fe,+NM+87501?entry=gmail&source=g"
moz-do-not-send="true">Santa Fe, NM 87501</a><br>
505-984-0136 (home)<span style="white-space:pre-wrap"> </span> <span style="white-space:pre-wrap"> </span><a
href="mailto:angel@cs.unm.edu" target="_blank"
rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">angel@cs.unm.edu</a></div>
<div>505-453-4944 (cell) <span style="white-space:pre-wrap"> </span><span style="white-space:pre-wrap"> </span><a
href="http://www.cs.unm.edu/~angel"
target="_blank" rel="noreferrer"
moz-do-not-send="true"
class="moz-txt-link-freetext">http://www.cs.unm.edu/~angel</a><br>
</div>
</span></span>
</div>
<div><br>
<blockquote type="cite">
<div>On Aug 7, 2024, at 9:28 PM, Frank Wimberly <<a
href="mailto:wimberly3@gmail.com" target="_blank"
rel="noreferrer" moz-do-not-send="true"
class="moz-txt-link-freetext">wimberly3@gmail.com</a>>
wrote:</div>
<br>
<div>
<div dir="auto">
<div>I'm not sure my 30+ year old daughter knows
the times tables. She works for the Secretary
of Public Education. If you ask her about it she
will say she uses calculators and spreadsheets.
I think.</div>
<div><br>
</div>
<div data-smartmail="gmail_signature">---<br>
Frank C. Wimberly<br>
<a
href="https://www.google.com/maps/search/140+Calle+Ojo+Feliz,++Santa+Fe,+NM+87505?entry=gmail&source=g"
moz-do-not-send="true">140 Calle Ojo Feliz, </a><br>
<a
href="https://www.google.com/maps/search/140+Calle+Ojo+Feliz,++Santa+Fe,+NM+87505?entry=gmail&source=g"
moz-do-not-send="true">Santa Fe, NM 87505</a><br>
<br>
505 670-9918<br>
Santa Fe, NM</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Aug 7,
2024, 9:12 PM Russell Standish <<a
href="mailto:lists@hpcoders.com.au"
target="_blank" rel="noreferrer"
moz-do-not-send="true"
class="moz-txt-link-freetext">lists@hpcoders.com.au</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">It is a test that you
know your 7 or 8 times table. And the definition<br>
of a prime number (which could be given as part
of the question, if<br>
not the curriculum).<br>
<br>
I would expect most 9 or 10 years olds should
know their times tables.<br>
<br>
Or am I wrong abut kids these days?<br>
<br>
On Mon, Jul 22, 2024 at 12:43:54PM -0600, Tom
Johnson wrote:<br>
> Ms. O'Hara:<br>
> <br>
> RE your story Sunday, "Does proficiency
give full picture?"<br>
> From your lede:<br>
> "Pop quiz: What number is both a prime
number and a factor or 56"?<br>
> <br>
> If I understand correctly, this is a
question on an exam given to fourth<br>
> graders, 9- or 10-year-olds.<br>
> Could you please point me to some source in
the city or state education<br>
> departments who can tell me what short- or
long-term value this question about<br>
> mathematics -- NOT arithmetic -- has for
students that age?<br>
> <br>
> We live in a state where it is a rare
cashier who can do the mental<br>
> arithmetic to make change from a $20 bill.
Can we first find out if fourth<br>
> graders can do that before getting into
primes and factorials?<br>
> *--<br>
>
============================================<br>
> Tom Johnson - <a
href="mailto:tom@jtjohnson.com"
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">tom@jtjohnson.com</a><br>
> Institute for Analytic Journalism --
Santa Fe, NM USA<br>
> 505.577.6482(c)
505.473.9646(h)<br>
> Visit Global Santa Fe<br>
>
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<br>
----------------------------------------------------------------------------<br>
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