Skip to main content
Create interactive lessons using any digital content including wikis with our free sister product
. Get it on the
Pages and Files
3 year old Jonathan...
3D Head Modeling Software
3D Printing!!! -- A Real Car
Aims of Education
Alexander Calder's Circus
Anatomy of a B1 Battle Droid
Anatomy of a Human
Anatomy of Musical Instruments -- Guitar History
Anatomy of Musical Instruments -- Saxophone
Anatomy of Musical Instruments -- Violin
Architecture -- Apartment Floor Plan
Architecture-- Filoli Gardens and House
Artificial Intelligence = AI
Arts & Culture by Google
Astronomy - Messier Chart
Astronomy - Very Large Telescope
Astronomy -- Constellations
Astronomy -- Galaxies
Astronomy -- Hands-on Universe
Astronomy -- IMax Saturn Spaceship Flyby...
Astronomy -- Night Sky Map
Astronomy -- Orrery Solar System Kit
Astronomy Picture of the Day
Automata - Toys that Move
Batman Paper Model
BioMedical Engineering -- Organ Regeneration
BioMedical Engineering -- Geometry Research about Viruses
Bongard Pattern Recognition Puzzles
CAD Images of Pythagorean Theorem
Careers in Design
Ceramic Tile Designs Worldwide
Clowns Go On Vacation -- Video in Progress
Design Education Blog (K-12)
Doodles -- with Vi Hart
Drones & Society
Drones & Society_Arts
Durer, Albrecht -- Renaissance Man
Engineering -- Introduction
Engineering -- Mechanical Engineering -- MIT Open Courseware
Engineering for the Other 90%
Engineering HS Model Bridge Contest
Engineering of Everyday Things -- Page 7 Xray Photographs
Engineering of Everyday Things -- Curriculum Outline
Engineering of Everyday Things -- Page 1 Photograph Introduction
Engineering of Everyday Things -- Page 2 Lesson Plan
Engineering of Everyday Things -- Page 3 Teachers' Guide
Engineering of Everyday Things -- Page 4 Cool Stuff_Book Cover
Engineering of Everyday Things -- Page 5 Cool Stuff_ Book Photos
Engineering of Everyday Things -- Page 6 Cool Stuff_Book Photos_2
Engineering, Go For It!
Evolution of Feathers
Fairchild Tropical Botanic Garden
Flickr_ Math World photos
Fractal Arts Tutorial
Fractals -- What are Fractals?
Fractals and Benoit Mandelbrot
Fractals PBL Curriculum
Geometric Delights -- a blog
Geometry Course -- Open Reference interactive excellent course
Geometry History & Quotations
GeoSphere Gears in Motion
Glass Ball Juggler
GPS = Global Positioning System
Graphic Arts and Design
Hathi Trust -- Digitized Books
Heilbrunn Timeline of Art History
History of Engineering
History of Mathematics
History of the Computer Timeline
How do you... List of 100 Topics
How it's Made -- Science Channel
How to... Instructional Essay Writing
Human Geometry & the Performing Arts
India Arts - Kolam
Jobs, Steve - Apple
Kinetic Geometry Sculpture
Magic Mirror Box
Mathematics and Multimedia
Moon Express, Inc.
Museum of Mathematics
National Geographic Magazine
Nets for Geometric Solids
NOVA -- PBS TV -- Science
Orchids (and other Flowers)
Origami -- Erik Demaine -- MIT Geometry
Origami -- Robert Lang
Origami -- Sara Adams
Origami Resource Center -- K-12
Paper Craft -- Valentine's Cake
Paper Models of Polyhedra
Papercraft and Model-Building
Patents -- Apple, Inc.
Patents -- Google Search
Pavilion of Polyhedreality
Privacy in the Digital World...
Puppets and How to Make Them
Quilt Design Patterns
Spirals in Nature
Sports Courts and Fields
Tiffany Stained-Glass Lamps
Tools of Science and Math
Tools of Science and Math 2
Tools of Science and Math 3
Tools of Science and Math 4
Tools of Science and Math 5
Toys from Trash
Tsunami Wave (Physics) -- Tragedy in Japan
Union of Concerned Scientists
Wikis in the Classroom
youtube khan academy
Binary Numbers and How they Relate to Decimal Numbers
Forget all this introductory text and just click on Vi Hart's
Binary Finger Dancing
Video at youtube :-)
Humans started counting with our 10 fingers, (2 hands with 5 fingers each) as an animal species with a developing brain, long ago...
and came up with the numbers: 1,2,3,4,5,6,7,8,9,10....
(Though NOT written as these symbols, which are the modern conventional symbols we use today...)
Which is why we call our number system a "decimal" (= 10 or "base 10") system
which actually consists of the 10 digits: 0,1,2,3,4,5,6,7,8,9
The number "Ten" in the Ancient Roman Number System was represented by the capital letter "X"
The Roman Numerals that you sometimes see on old buildings, or in old books are as follows:
I, II, III, IV, V, VI,VII,VIII, IX, X... representing: 1,2,3,4,5,6,7,8,9,10...
Sometimes dates/years in history are still written with the old Roman Numerals:
such as: 1968 = MCMLXVIII MCM = 1900 + LXVIII = 68
M = 1,000
CM = 900
LXVIII = 68
L = 50
C = 100
and This year: 2011 = MMXI ....
But getting back to our contemporary number symbols: 1,2,3,4,5,6,7,8,9.10.....
Something Really Big Happened during the 1900's in the United States of America:
Preface starting back in England in 1854: (from Wikipedia)
published a landmark paper detailing an
that would become known as
. His logical calculus was to become instrumental in the design of digital electronic circuitry.
In the United States: (from Wikipedia)
produced his master's thesis at
that implemented Boolean algebra and binary arithmetic using electronic relays and switches for the first time in history.
A Symbolic Analysis of Relay and Switching Circuits
Shannon's thesis essentially founded practical
In November 1937,
, then working at
, completed a relay-based computer
he dubbed the "Model K" (for "
K**itchen", where he had assembled it), which calculated using binary addition.
Bell Labs thus authorized a full research programme in late 1938 with Stibitz at the helm.
Recent photograph of Bell Labs HQ: The reason the building looks like a Fortress is because it is...
They do National Security Technology Research there; they don't want any tourists coming by... :-)
Their Complex Number Computer, completed January 8, 1940, was able to calculate
In a demonstration to the
American Mathematical Society
on September 11, 1940, Stibitz was able to send the Complex Number Calculator remote commands over telephone lines by a
It was the first computing machine ever used remotely over a phone line.
Some participants of the conference who witnessed the demonstration were
John von Neumann
, who wrote about it in his memoirs.
The Computer was invented!
And it functions with "digital circuit boards", which use binary electrical (on-off) switches, which means that everything about computers and other "digital devices" use the Binary Number System!
That is why learning about binary numbers is important and it is the first lesson in Computer Science.
So here is an introductory youtube video from the Khan Academy (online learning) about
How Binary Numbers are Related to Decimal Numbers and how you can convert one type of number into the other...
and here is a "cheat sheet chart" to help you through the "blah, blah, blah..." video :-)
help on how to format text
Turn off "Getting Started"