Older books:
Numerical Solution of Partial Differential Equations by the Finite Element Method (reprinted by Dover 2008)
Computational Differential Equations (1996)
Recent books:
Applied Mathematics Body & Soul I-III (2003)
(Vol I)
(Vol II)
(Vol III)
Dreams of Calculus: Perspectives on Mathematics Education (2004)
New book:
Computational Turbulent Incompressible Flow
(prel version for download) (2007)
Books under production:
Computational Thermodynamics
Many-Minds Relativity with Many-Minds Quantum Mechanics
Computational Black Body Radiation
The Clock and the Arrow: A Brief Theory of Time
The Secret of Flight
The Secret of Sailing