# cylinder

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29 07, 2017

## What is a cylinder? Simple geometry

By |2017-07-29T09:33:37-07:00July 29th, 2017|Math|0 Comments

This is a cylinder. What can you find around your house that's a cylinder? A cylinder is a circle moved through space to make a solid form. The ends are circles that [...]

29 07, 2017

## Volume of a cone – Geometry

By |2017-07-29T09:28:52-07:00July 29th, 2017|Math|0 Comments

How much ice cream fits inside this cone? A cone is the set of all the line segments that start from one circle and go to a point not on the circle. You could think of [...]

18 07, 2017

## Who was Archimedes? Eureka!

By |2019-02-01T06:23:28-08:00July 18th, 2017|History|0 Comments

Archimedes was from Syracuse, Sicily. Here you see it with Mount Etna in the background When did Archimedes live? Archimedes was born about 287 BC, so he was a little younger [...]

7 06, 2017

## Math and Numbers in Ancient China

By |2019-10-15T09:08:44-07:00June 7th, 2017|China, Science|0 Comments

Chinese numbers: number rods Chinese numbers People in China were using written numbers by about 1500 BC, in the Shang Dynasty. This is about two thousand years later than people began [...]

7 06, 2017

## What are the Nine Chapters? Math in Ancient China

By |2018-04-18T17:47:38-07:00June 7th, 2017|China, Science|0 Comments

Nine Chapters: How to figure out the area of an isosceles triangle. A math textbook from Han Dynasty China The earliest Chinese mathematical textbook is called the Nine Chapters. It [...]