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Teaching Mathematical Thinking with the AMC - Shared screen with speaker view
Esra Keskin
51:07
Hello
Sheila Krilov
51:38
Greetings from NYC!
Melody Simmons
51:38
Tucson, AZ
Lipika Bal
51:42
Aishani from Georgia
Skona Brittain
51:46
Phinally out of Philly and back in CA
Arpi Lajinian
51:50
Joining from NJ
Liliana Haro-Fausto
51:56
Hello! I am from Los Angeles, CA and it is 96 deg outside.
Esra Keskin
51:57
Maryland
Syamil
51:57
from Kuala Lumpur, Malaysia
Nicholas Bullington
51:59
joining from Evansville in
Nicholas Bullington
52:02
(USA)
Roger Zhang
52:14
NC
Kelly DeRango
52:27
Michigan
Roger Zhang
52:29
Has been raining for the past like 5 days
Eric Loken
53:31
CT
Syamil
54:19
7 in the morning
James Tanton
55:48
maa.org/amc
Ildiko Pelczer
01:03:32
Difference
Jeffery Pereira (he/him/his)
01:03:44
z = 2
Ildiko Pelczer
01:04:49
This is known as comparison method and it is taught in grade 4 in some countries
Jeffery Pereira (he/him/his)
01:04:54
x = 1
Esra Keskin
01:05:23
y=6
Esra Keskin
01:06:13
y=2
Ildiko Pelczer
01:06:21
Just take it three ties
Ildiko Pelczer
01:06:24
times
Ildiko Pelczer
01:09:01
Just use lcm
Esra Keskin
01:09:14
x=3
Ildiko Pelczer
01:09:35
Multiply by 2 second
Esra Keskin
01:11:27
z=2, b=1
Arpi Lajinian
01:12:05
z=2
Esra Keskin
01:12:05
Yep -1
Esra Keskin
01:14:22
b
Ildiko Pelczer
01:14:37
a ot b 0
Arpi Lajinian
01:15:23
D
Sheila Krilov
01:15:48
D
Luis Beltran
01:16:41
root is positive out of two squares
Lim, Bee G
01:19:26
ab=0
Kelly DeRango
01:25:56
What I am trying to figure out is how to avoid abstraction as much as possible in order to draw in students who may be otherwise put off by math - that's the appeal of the area model and my interest in extending it as much as possible. Like exploding dots.
Kelly DeRango
01:27:11
It's 8 am but on which day?
Sheila Krilov
01:27:46
no real values
Jeffery Pereira (he/him/his)
01:31:20
yea! since sine is an odd function you'd get sin(0) = sin(a) + sin(-a)
Jeffery Pereira (he/him/his)
01:31:28
aka -sin(a)
Luis Beltran
01:32:53
it's no function haha
Jeffery Pereira (he/him/his)
01:33:31
some shifts of 2pi
Lim, Bee G
01:33:38
2pi
Arpi Lajinian
01:33:39
when cos(b)=1 and cos(a)=1 ?
Luis Beltran
01:35:04
with cosine it's so satisfying to look at
Nicole Goberdhan, MAA AMC
01:35:15
^^^
Jeffery Pereira (he/him/his)
01:35:34
logarithms!
Ildiko Pelczer
01:35:38
logs
Arpi Lajinian
01:35:39
logs
Sheila Krilov
01:35:42
logs
Nadja Aquino
01:37:37
Let a = -b
sondra
01:39:29
thank you
Nicholas Bullington
01:39:35
thanks
Sheila Krilov
01:39:36
Thanks so much!
Kelly DeRango
01:39:39
thank you very much!
Arpi Lajinian
01:39:42
Thanks!
Lim, Bee G
01:39:43
thank you
Syamil
01:39:55
Thank you for great presentation!
Nicole Goberdhan, MAA AMC
01:40:07
maa.org/amc
Nicole Goberdhan, MAA AMC
01:40:41
maa-amc.org
Kevin Taylor
01:41:02
Thank you Dr. T!
Luis Beltran
01:41:06
Thank you!
Ildiko Pelczer
01:41:11
BYe!
Esra Keskin
01:41:11
Thank you
Syamil
01:41:15
Bye