Global Contact
Al-Umari’s Account of Mansa Musa’s Visit to Cairo
Mansa Musa was the leader of the Mali empire in the fourteenth century and reportedly the wealthiest person – allegedly ever. The empire covered modern-day Mali and parts of Guinea, Senegal, Mauritania, and the Gambia, and Mansa Musa expanded the territorial claim to include Gao and Timbuktu.
Pacific Culture Areas Map
This map illustrates the three dominant cultures in Oceania, Micronesia, Melanesia, and Polynesia, and which islands occupy each region. This map successfully highlights the number of island nations/cultures and the overall size of Oceania.
Polynesian Oral Traditions
This collection compiled by Rawiri Taonui, a professor of Indigenous Studies, includes creation myths and stories about gods, the origin of humanity, and cultural heroes for several Polynesian cultures, such as Hawaii, Samoa, Tonga, Tahiti, and numerous others.
Moai on Easter Island
The Moai are large statues on Easter Island in Oceania, known for their distinctive head and facial features. The moai were created by the Rapa Nui people likely between 1250 and 1600 CE.
Early Modern Counter
An early modern counter of the "Reichenmaster" style, with one side showing a picture of a man using a counting board and the other side showing the alphabet. These counters were used in classrooms to teach students both to read and perform basic arithmetic.
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.
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.
Map with Many of the Protests in Puerto Rico and the World 2019
An event in Puerto Rico that captured world attention and motivated the interest of many Puerto Ricans in the diaspora to participate was the Summer of 2019 movement.
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
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.