Article
Famous Scientists

Famous Scientists: Fibonacci Leonardo of Pisa

For Students 9th - 10th
Find out about how Fibonacci invented the modern number system, and contributed to the scientific revolution.
Activity
Cut the Knot

Cut the Knot: Lattice Multiplication

For Students 9th - 10th Standards
Have you heard of the 13th century mathematician, Leondardo Fibonacci? See examples of his concept of a lattice multiplication algorithm. Several example problems, including an interactive one where students can change the factors, are...