Indefinite Integrals from Integration.    The Fourth Biennial Engineering Mathematics and Applications Conference,  The Institution of Engineers, Melbourne, September, 2000.

What should they see on http? -- the public and private faces of the Department on the web
Seminar to the Department of Mathematics & Computing at USQ, 16th March, 2000.

Our Future: a very discrete affair.    International Conference on Mathematics Education into the 21st Century: Societal Challenges, Issues  and Approaches.  Third World Forum--Project Egypt 2020, Cairo, November, 1999.

The Parabolic Arc: A Subtle Step Forward,  Australian Association for Engineering Education, Gladstone, September,1998

A Web-interfaced Array-based Mathematics Course, The International Array Processing Language Conference, Rome, July, 1998.

Potential Influences of Computer Notation on Mathematics Teaching, International Conference on the Teaching of Mathematics, Samos, July, 1998.

Surface Integrals in First Year, 2nd Biennial Australian Engineering Mathematics Conference, The Institution of Engineers, Sydney, July 1996.

The Numerical Basis of Elementary Calculus: a hands-on workshop for teachers (with R. Neidinger) ACM International Conference on APL, San Antonio, 7 June, 1995.

The Language of Mathematics. Workshops (2) for the Girls Maths and Science Summer School, USQ, 25 January, 1995.

A Computationally Rich Mathematics Instruction Program. USQ CAUT Seminar, USQ, 30 November, 1994.

The Impact of APL on First Year Mathematics The International Conference on APL, Antwerp, 12 September, 1994

A Computationally Rich Mathematics Instruction Program. State CAUT Workshop, Grace College, 7 February, 1994

Computationally-based Calculus: Prospects and Pitfalls Seminar presented to the School of Information Technology, Bond University, 17 November, 1993.

Point-wise Calculus The International Conference on APL, Toronto, 18 August, 1993.

Implications of a computationally-based introductory mathematics unit for advanced courses, Department of Mathematics & Computing Seminar, 28 July, 1993.

The Many and the Box, Queensland Division of the Australian Applied Mathematics Association Workshop for Teachers, 7 August,1992.

Challenging the Mathematics Curriculum The International Conference on APL, St.Petersburg, Russia, 10 July, 1992.

Getting to Know STATGRAPHICS, Workshops for UCSQ staff (with M.McFarlane) 19 & 26 November, 1991, and 6 & 7 February, 1992.

Rock, Paper, Scissors -- APL Combat, Workshop for Toowoomba Grammar School Spring School in Computing, 9 September, 1991.

The Appeal of APL, Public Lecture, 7 August, 1991.

Computing Power in Teaching Mathematics Australasian Association for Engineering Education National Conference, Monash University, 9 December,1990.

Battle Lines in APL, Talk/workshop for junior students presented at Toowoomba Grammar School,13 September,1990.
APL - Another Primitive Language ? Talk/workshop for senior students, presented at Toowoomba Grammar School, 11 September,1990.

The Big M - Living with Large Matrices  Talk/workshop presented at Fairholme College, for the Toowoomba & Dist. Maths Teachers' Mathematics Camp, 18 August,1990.

Teacher-defined Vocabularies in Maths Teaching  Talk/workshop presented as part of a special activity session sponsored by APLUG for the World Conference of Computers in Education, at the University of Technology, Sydney, 11 July, 1990.

Vacation Workshop on APL, at UCSQ, December 4 -7, 1989.

4GL in 1st YR ALG, Seminar, presented to the School of Information Technology, 10 May, 1989.

Fuzzy Logic in Artificial Intelligence, Seminar, presented to the School of Applied Science, 24 November, 1987.

Fuzzy Sets: an introduction, Seminar, presented to the School of Applied Science, 18 September, 1984.

Science Mag: a new venture by DDIP, Seminar, presented to the School of Applied Science, 23 September,1981.

Publisher or Printer ? -- vanity publishing at its best and worst, Invited lecture, Creative Writing Class, McGregor Summer School, 9 January, 1981. Publishing: Popular and Academic, Seminar, presented to the School of Arts, 28 August, 1980.

Teachers, Pupils and Mathematics   Seminar: Research and the Regional College, at DDIAE, 27 August, 1979.

Teacher and Pupil Attitudes to Mathematics   Remedial Teachers' Association of Queensland: Seminar on Learning Problems, Bardon Professional Development Centre, 3 May, 1978

Spy-rings and True Confessions; Rice Bubbles or Weeties ; Catching Crooks with Calculus-- the case of the Vermeer forgeries.
Three talks presented on a number of occassions at various high schools in southern Queensland (1974-77)

The Prisoner's Dilemma, Radio talk, broadcast on 4GR, 12 October, 1973.

Free Convection from a Point Source of Heat, Seminar, presented to the Mathematics Department, University of Queensland, 8 July, 1966.