Post on 31-Dec-2015
Need
• Open big dag video• Slips of paper for voting • Prepare binary addition• Prepare lines for fractions• Rulers• Big cards• Little cards• Bucket• Warm-up: decimal multiplication and addition• Make boxes on white-board above the heads of the volunteers• Pencils
Agenda• Talk about
computer theory• Talk about
numbers• Ask for
volunteers to simulate a computer
• Play with cards
Agenda• Talk about computers• Talk about numbers• Ask for volunteers to
simulate a computer• Play with cards
Computer Science Teacher’s Association
• Google Workshop
• Reasons I think computer science should be part of the curriculum– Our freedom might depend on it– Lots of Jobs– Compete with the Khan academy– Fun, understandable with the math-level that they
teach in elementary school
Freedom
http://www.youtube.com/watch?v=W1czBcnX1Ww
Predicting New Jobs(per U.S. Bureau of Labor, 2008-2018)
Computer Specialists
Engineers, Social, Life
and Physical Scientists
• But A LOT of our technology is created in Europe and Asia.
• US government has to go outside the US to program, say, our defense systems.
Information Technology
Teaches how to use technology
Computer Theory
Teaches the ideas needed to create
technology
Music Performance: How to perform music
Music Theory: How to compose music
Two Important Questions:
1. What are numbers, and what are they for?
2. What are decimal numbers?
3. What are binary numbers?
• We have ten symbols in our decimal numbers, and we use them to build all the others:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
But I wonder if our brains don’t learn to think of it as one thing, as a
noun, maybe because of our language.
12
• Ten means this many ones:
• Hundred means Ten Groups of Ten in each group
• Thousand means Ten Groups of Ten groups of ten ones in each group
• Ten thousand means ten Groups of ten groups of ten groups of ten ones in each group
11, 0Ten Groups of
one in each group
11Ten Groups of
one-hundred in each group
Ten Groups of ten in each
group
Ten Groups of one-thousand in each group
• Two means two ones:
• Four mean Two Groups of Two in each group• Eight means Two Groups of Two groups of ten
ones in each group• Sixteen means two Groups of two groups of
two groups of two ones in each group
11, 0Two Groups of one in each
group
11Two Groups of four in each
group
Two Groups of two in each
group
Two Groups of eight in each
group
• I have to have ten symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
• But computers can ‘think’ as well as this washing machine:
Up Down
Light Dark
Down Up
North South
East West
Sadness Happiness
Open Closed
Winter Summer
2 − 2
Black White
Yellow Blue