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Lutzer, Carl V. – PRIMUS, 2015

We propose an introduction to the Laplace transform in which Riemann sums are used to approximate the expected net change in a function, assuming that it quantifies a process that can terminate at random. We assume only a basic understanding of probability.

Descriptors: Mathematics Instruction, College Mathematics, Undergraduate Study, Equations (Mathematics)

Lutzer, Carl V. – PRIMUS, 2011

We propose an alternative to the standard introduction to the derivative. Instead of using limits of difference quotients, students develop Taylor expansions of polynomials. This alternative allows students to develop many of the central ideas about the derivative at an intuitive level, using only skills and concepts from precalculus, and…

Descriptors: Calculus, Mathematics Instruction, Graphs, Information Technology

Lutzer, Carl V. – PRIMUS, 2007

In this article, we discuss an alternative method of teaching students about the Dirac [delta]-function. The method provides students with the mechanical tools they need in order to work with the [delta]-function in practice, while also fostering a sense of cohesion in the calculus curriculum by presenting the [delta]-function as an evolution of…

Descriptors: Calculus, Mathematics Instruction, Teaching Methods, Mathematical Concepts

Lutzer, Carl V. – PRIMUS, 2005

Students sometimes have difficulty in mathematics because they solve problems mechanically, without understanding the ideas represented by their equations. This brief note provides mathematics instructors with ideas for rectifying this fundamental flaw in students' paradigm of problem solving. (Contains 1 footnote.)

Descriptors: Numeracy, Thinking Skills, Computation, Teaching Methods