This paper describes a set of simple experiments with a very low cost using a notebook as a measuring instrument without external hardware. The major purpose is to provide demonstration experiments for schools with very low budgets. (Contains 6 figures.)

Excursions to museums and science centres generally are great fun for students and teachers. The potential educational benefits beyond enjoyment, however, are rarely realised or analysed for their efficacy. The purpose of this paper is to describe four educational enrichment programs delivered at the Gravity Discovery Centre (GDC), near Gingin,…