| Category | Format | Size |
|---|---|---|
| Hebei Education Edition Fourth Grade Mathematics Volume 1 | pptx | 6 MB |
"The Evolution of Computing Tools" Understanding Greater Numbers PPT Courseware
Description
"The Evolution of Computing Tools" Understanding Greater Numbers PPT Courseware
New knowledge explained
stone counting
Use the number of stones to represent the number of objects.
knot count
The principle is similar to counting stones. The number of knots on the rope is used to represent the number of objects.
Calculate
Calculation is an ancient Chinese calculation tool that was widely used during the Spring and Autumn and Warring States periods more than 2,500 years ago.
Use branches or bamboo sticks to represent numbers. For example: "1" is represented by one branch, and "2" is represented by two branches. ..."6" means 6 branches.
The origin of abacus
Later, people used small sticks to thread beads on them as calculation tools. This calculation tool slowly improved into the current abacus. Calculating with an abacus is called abacus. Abacus has a history of more than 600 years in our country.
Abacus counting method:
What else do you know about abacus?
Can you use an abacus to calculate 1+2+3+…+10?
computer
In 1946, after several years of hard work, the University of Pennsylvania developed the world's first electronic computer. With the advancement of science and technology, computers are constantly updated. Currently, fast computers can calculate hundreds of billions of times per second.
calculator
Nowadays, people generally use calculators when performing general calculations. Calculators are small in size, fast in calculation, and easy to operate.
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For more information about the PPT courseware "Understanding the Evolution of Calculation Tools for Larger Numbers", please click the "Understanding the Evolution of Calculation Tools for Larger Numbers" ppt tag.
"The Evolution of Computing Tools" Understanding Greater Data Flash Animation Courseware:
"The Evolution of Computing Tools" Flash animation courseware for understanding larger numbers. This courseware belongs to the sixth unit of the fourth grade mathematics volume of the Hebei Education Edition. The evolution of computing tools is a Flash animation courseware for understanding larger numbers. The content is vivid and vivid. Please download it. ! Keywords: understanding..
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Update Time: 2024-07-10
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