...Used Ordinary and Partial Differential Equations extensively in Vibrations and Waves, as well as my Differential Equations courses at CU Denver. In V & W, we had to use matrices to find the eigenvectors and eigenvalues for oscillating systems such as coupled springs, pendulums, or electrical cir... (read more)
...Several long-term students tutored by David have credited their multi-year study of World History with David as giving them a solid foundation upon which they could build a lifetime appreciation of history. For example one of David's previous students recently visited his home, bringing history ... (read more)
...Prealgebra - the foundation for algebra, the bringing together of elementary math skills, and the practice of solving problems. Several students that I work with in prealgebra have found their study skills and comprehension increasing with regular practice. Getting students to write their own word problems and find solutions is the joy of seeing them evolve into competent mathematicians. (read more)