# pyramid

9 09, 2017

## Who were the Moche? South American history

By |2020-05-01T08:26:40-07:00September 9th, 2017|History, South America|Comments Off on Who were the Moche? South American history

Moche portrait of a blind man, 400-500 AD (thanks to Oberlin College) When did the Moche get started? The collapse of the Chavin state in Peru, about 250 BC, seems to have opened [...]

29 07, 2017

## What is a pyramid? Square pyramids

By |2017-07-29T11:57:36-07:00July 29th, 2017|Math|Comments Off on What is a pyramid? Square pyramids

A pyramid with a square base. A pyramid is a three-dimensional solid form made out of triangles. Some pyramids also use a square. There are two common kinds of pyramids: triangular pyramids that you [...]

29 07, 2017

## What is a plane? Simple geometry

A plane goes on infinitely in all directions. Just as a line is made of an infinite number of points, a plane is made of an infinite number of lines that are right [...]

29 07, 2017

Geometry: This is an equilateral trangle. What is geometry? The simplest geometric idea is the point, and then the line, the plane, and the solid. Shapes like circles, squares, rectangles, and triangles are flat, and we can think of [...]

13 06, 2017

## How to build a pyramid – Ancient Egypt

By |2018-04-19T12:10:03-07:00June 13th, 2017|Africa, Architecture, Crafts, Egypt|Comments Off on How to build a pyramid – Ancient Egypt

Pyramid project: building a sand pyramid A pyramid project Ancient Egyptian pharaohs, like Mayan lords, built pyramids because they're a pretty easy shape to build. Pyramids are especially easy to [...]

7 06, 2017

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

By |2018-04-18T17:47:38-07:00June 7th, 2017|China, Science|Comments Off on What are the Nine Chapters? Math in Ancient China

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 [...]

Go to Top