1
0:00:00,000 --> 0:00:02,710
well hello children and welcome to the

2
0:00:02,720 --> 0:00:06,550
history of the entire world class today

3
0:00:06,560 --> 0:00:10,070
we are traveling back in time to meet a

4
0:00:10,080 --> 0:00:12,790
famous mathematician named sir isaac

5
0:00:12,800 --> 0:00:14,629
newton so the first thing we do is we

6
0:00:14,639 --> 0:00:17,189
hike up our pants a little bit just like

7
0:00:17,199 --> 0:00:19,349
this and we wiggle our toes a little bit

8
0:00:19,359 --> 0:00:23,590
just like this and then we are uh dance

9
0:00:23,600 --> 0:00:26,150
right back through time right back to

10
0:00:26,160 --> 0:00:30,310
the ripe old year of 1665.

11
0:00:30,320 --> 0:00:32,870
you see one day mr sir isaac newton is

12
0:00:32,880 --> 0:00:34,790
sitting under this her tree which

13
0:00:34,800 --> 0:00:38,470
happens to be an apple tree and he was a

14
0:00:38,480 --> 0:00:40,389
writing in his diary when all of a

15
0:00:40,399 --> 0:00:42,630
sudden

16
0:00:42,640 --> 0:00:46,069
uh when all of a sudden

17
0:00:46,079 --> 0:00:48,549
oh no kids you see what's supposed to

18
0:00:48,559 --> 0:00:50,709
happen right now was an apple supposed

19
0:00:50,719 --> 0:00:52,709
to fall from this tree

20
0:00:52,719 --> 0:00:55,189
onto that man's head

21
0:00:55,199 --> 0:00:56,709
and it's very funny you see but

22
0:00:56,719 --> 0:00:58,709
something else happens to something very

23
0:00:58,719 --> 0:01:01,520
historical

24
0:01:02,160 --> 0:01:03,510
i know

25
0:01:03,520 --> 0:01:05,429
i've seen this while traveling through

26
0:01:05,439 --> 0:01:08,230
history from time to time we must be

27
0:01:08,240 --> 0:01:10,950
stuck in a thought bubble

28
0:01:10,960 --> 0:01:13,190
a brain fart

29
0:01:13,200 --> 0:01:16,390
if you will you see a brain fart

30
0:01:16,400 --> 0:01:18,390
is when you get stuck in an idea and you

31
0:01:18,400 --> 0:01:21,030
can't solve or figure something out and

32
0:01:21,040 --> 0:01:23,910
all of time freezes until you figure out

33
0:01:23,920 --> 0:01:26,149
the right answer so we need to help out

34
0:01:26,159 --> 0:01:29,670
this guy right here right excuse me

35
0:01:29,680 --> 0:01:33,190
sir mr sir isaac newton sir

36
0:01:33,200 --> 0:01:36,310
yes who's there i missed her or uh his

37
0:01:36,320 --> 0:01:39,109
turn i'm a big fan of your work yes well

38
0:01:39,119 --> 0:01:41,030
i have this mathematical problem that i

39
0:01:41,040 --> 0:01:42,630
just can't figure out and i'm having a

40
0:01:42,640 --> 0:01:44,710
bit of a brain fart

41
0:01:44,720 --> 0:01:47,109
i knew i smelled a brain fart

42
0:01:47,119 --> 0:01:50,230
well maybe we can help you out oh that

43
0:01:50,240 --> 0:01:52,230
would be amazing because i just feel

44
0:01:52,240 --> 0:01:54,950
stuck today so here's the problem i have

45
0:01:54,960 --> 0:01:56,710
these ten apples up there in the

46
0:01:56,720 --> 0:01:59,030
branches see and i'm trying to imagine

47
0:01:59,040 --> 0:02:01,510
how many would be there if there were

48
0:02:01,520 --> 0:02:04,389
four or less for you see my wife needs

49
0:02:04,399 --> 0:02:07,109
four apples for making her classic four

50
0:02:07,119 --> 0:02:09,109
apple pie well that sounds like a real

51
0:02:09,119 --> 0:02:11,270
problem now let's work through this so

52
0:02:11,280 --> 0:02:13,990
let's count these apples first

53
0:02:14,000 --> 0:02:14,869
one

54
0:02:14,879 --> 0:02:15,670
two

55
0:02:15,680 --> 0:02:16,630
three

56
0:02:16,640 --> 0:02:17,510
four

57
0:02:17,520 --> 0:02:18,390
five

58
0:02:18,400 --> 0:02:20,830
six seven eight

59
0:02:20,840 --> 0:02:24,390
nine ten yeah ten there's ten very good

60
0:02:24,400 --> 0:02:26,070
now you

61
0:02:26,080 --> 0:02:28,790
want to imagine what it would be like to

62
0:02:28,800 --> 0:02:31,750
have four less apples you're saying the

63
0:02:31,760 --> 0:02:35,750
equation is actually ten minus four yes

64
0:02:35,760 --> 0:02:38,309
oh but that's not really that much help

65
0:02:38,319 --> 0:02:40,470
i'm still exactly where i started oh

66
0:02:40,480 --> 0:02:42,630
we'll never figure this out and i'll

67
0:02:42,640 --> 0:02:46,309
never be a great mathematician

68
0:02:46,319 --> 0:02:47,350
sheets

69
0:02:47,360 --> 0:02:49,509
this guy has gone bananas

70
0:02:49,519 --> 0:02:52,630
now we have to count bananas too

71
0:02:52,640 --> 0:02:53,589
oh

72
0:02:53,599 --> 0:02:56,150
hold on right there mr sir isaac newton

73
0:02:56,160 --> 0:03:00,070
i have an idea what if we count out four

74
0:03:00,080 --> 0:03:02,309
apples that are right near each other

75
0:03:02,319 --> 0:03:05,270
one two three

76
0:03:05,280 --> 0:03:07,589
four four yeah there's four and we cover

77
0:03:07,599 --> 0:03:09,910
those up with our hand so it's like they

78
0:03:09,920 --> 0:03:11,110
went away

79
0:03:11,120 --> 0:03:12,149
okay

80
0:03:12,159 --> 0:03:14,790
now what well now we just count the rest

81
0:03:14,800 --> 0:03:16,630
of the apples that aren't covered up to

82
0:03:16,640 --> 0:03:18,869
see how much would be left

83
0:03:18,879 --> 0:03:19,750
one

84
0:03:19,760 --> 0:03:24,949
two three four five six yeah there's six

85
0:03:24,959 --> 0:03:29,030
six apples remain so ten minus four

86
0:03:29,040 --> 0:03:31,670
equals six you better write that one

87
0:03:31,680 --> 0:03:32,390
down

88
0:03:32,400 --> 0:03:34,550
i will well let's stand back now kids

89
0:03:34,560 --> 0:03:36,550
and see if we fixed history

90
0:03:36,560 --> 0:03:38,869
so there's sir isaac newton writing in

91
0:03:38,879 --> 0:03:41,990
his diary and all of a sudden

92
0:03:42,000 --> 0:03:43,670
ouch

93
0:03:43,680 --> 0:03:47,030
an apple falls on his head and in that

94
0:03:47,040 --> 0:03:48,869
moment

95
0:03:48,879 --> 0:03:50,470
eureka

96
0:03:50,480 --> 0:03:51,350
sir

97
0:03:51,360 --> 0:03:54,470
newton realized that all things were

98
0:03:54,480 --> 0:03:56,949
pulled down from the air towards the

99
0:03:56,959 --> 0:03:58,949
center of the earth and he called this

100
0:03:58,959 --> 0:04:02,309
theory gravity which is pretty awesome

101
0:04:02,319 --> 0:04:04,309
since that's what keeps our bodies here

102
0:04:04,319 --> 0:04:07,190
on the ground because without it

103
0:04:07,200 --> 0:04:09,750
we'd all be floating around

104
0:04:09,760 --> 0:04:12,869
like we're in space

105
0:04:12,879 --> 0:04:14,869
yeah space

106
0:04:14,879 --> 0:04:16,870
i remember space

107
0:04:16,880 --> 0:04:18,629
very

108
0:04:18,639 --> 0:04:21,639
relaxing

109
0:04:30,080 --> 0:04:32,469
gravity huh

110
0:04:32,479 --> 0:04:34,230
well

111
0:04:34,240 --> 0:04:37,360
see you guys next time

112
0:04:37,440 --> 0:04:40,440
bye

113
0:04:42,400 --> 0:04:45,400
hey