Eureka Math, a Story of Ratios - Grade 7, Module 2

Rational numbers

Thomas P. Carpenter

The classical fields

H. Salzmann

Here's looking at Euclid

Alex Bellos

Integer Algorithms in Cryptology and Information Assurance

Boris S. Verkhovsky

One million

Hendrik Hertzberg

Rational Number Project

Kathleen Cramer

Traité des quantitez incomensurables [sic]

Jacques-Alexandre Le Tenneur

Deepening children's understanding of rational numbers

Joan Moss

Rational Points

Gesbert Wustholz