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Science/ Technology

A sandstone featuring Meroitic hieroglyphs in three columns.
Source

Meroitic Script

The Meroitic Script was used in the Kingdom of Kush beginning in the 3rd Century BCE, or the Meroitic Period, and had two forms, Meroitic Cursive and Meroitic hieroglyphs.

A green background with counters on a counting board and pen and paper math.
Source

Division with an Early Modern Counting Board

Before the rise of literacy rates, counting boards such as the one featured in the video were the most common way to perform arithmetic. After pen-and-paper arithmetic replaced counting boards, Arabic numerals also became dominant throughout Europe. 

A green background with counters on a counter board.
Source

Multiplication with an Early Modern Counting Board

Before the rise of literacy rates, counting boards such as the one featured in the video were the most common way to perform arithmetic. After pen-and-paper arithmetic replaced counting boards, Arabic numerals also became dominant throughout Europe. 

A man sits in front of a counting board with a pile of counters in front of him and a counter in one hand.
Source

Engraving of a Rechentisch (Counting Board)

This image of an engraving depicts a man using a rechentisch, or counting board, the earliest known counting device and a precursor the abacus. The earliest known counting board is the Salamis Tablet, dating from 300 BCE, but may have been used more for gaming than for calculating.

A terracotta sculpture of a male figure with defined facial features, a hairstyle with multiple buns and caps over the ears, and numerous necklaces and other jewelry.
Source

Nok Terracotta Sculptures

Nok terracotta sculptures are the earliest-known sculptures from sub-Saharan Africa, created by the Nok culture of which little is known except their ironworking and terracotta sculptures that flourished circa 1500 BCE to 1 BCE.

Stepped platforms made from tan-colored adobe bricks located on the plaza at Huaca Pucllana
Source

Huaca Pucllana, Ancient Pyramid in Peru

Huaca Pucllana is a pyramid site built around 500 AD by the Lima culture of Peru. The pyramid was built with seven platforms made from adobe bricks and is around 82 feet (25 meters) high, and has a plaza surrounding it. The pyramid was a site of ceremonial and religious power.

Cave painting with red paint outlining hands.
Source

Cueva de los Manos, Rio Pinturas

Cueva de las Manos, Rio Pinturas is an archealogical site and World Heritage Site in Argentina that features cave art and rock are that dates to around 9500 to 13000 years old.

A green background with counters on a counting board.
Methods

History of Pre-Modern Math

Before the widespread adoption of Arabic numerals, medieval and early modern Europeans added, subtracted, multiplied, and divided using a type of abacus known as a counting board and only afterwards recorded the results of their ca

A green background with counters on a counting board.
Source

Adding and Subtracting with an Early Modern Counting Board

Before the rise of literacy rates, counting boards such as the one featured in the video were the most common way to perform arithmetic. After pen-and-paper arithmetic replaced counting boards, Arabic numerals also became dominant throughout Europe. 

Link to source page for AAAS Letter
Teaching

Short Teaching Module: Science, Technology, and the U.S. Military-Industrial Complex during the Cold War

For decades, the relationship between science and the U.S. government during the early Cold War years was understood largely as a story of a militaristic state persecuting and co-opting scientists and scientific institutions to serve national security interests.