Students examine the bacterial expansion pattern and attempt to relate what they discover to expanding powers of two. They also relate what they see and discover to increasing living space requirements in a world of infinite space and finite space to discover that living space decreases as a function of one over expanding powers of two. The…

In this study, we juxtapose the purpose and procedures for school science inquiry activities as they are portrayed in curriculum policy statements, provincial assessment materials and teacher resources with a teacher's enactment of these policy and resource directives in her classroom. This article draws on data collected during a Grade 6…

Describes an activity in which students are asked to write an essay on the Crustal Displacement hypothesis, an hypothesis that is inconsistent with the accepted understanding of crustal and mantle processes. The assignment is useful because it forces students to solidify their understanding of plate tectonics by applying their knowledge in a new…

The benefits of using investigation for promoting scientific skills and enhanced conceptual understanding within primary science are well documented. ISE (2000) defines investigations in primary science as "the means of carrying out a fair test to explore some of the children's own ideas on how the natural or man made world works". However, a…

The exciting world of plants may be something of a mystery to many children, and the often-dry content of a curriculum taught indoors inhibits real understanding of many complex biological processes. Moving outdoors opens up an unexplored world and presents rich opportunities for imaginative learning. The "Life processes and living…

Science enquiry activities set in an industrial context are motivating for children and teachers. In this article, the author describes Children Challenging Industry (CCI) project, an initiative developed and coordinated by the Chemical Industry Education Centre at the University of York, and now running in four northern regions of England (Humber…

This paper describes how second/third year undergraduates with little prior botanical knowledge, attending a one-week field course in Western Scotland, were enabled to complete within one day an intensive phytosociological exercise. They showed that two stands of heathland vegetation were objectively different through identification of plants,…

Inquiry instruction is a hallmark of the current science education reform efforts. Science teachers know that inquiry is important, yet most teachers lack a practical framework of inquiry to inform their instruction. Defining inquiry and assessing how much inquiry is supported by a particular activity or lab can be difficult and confusing. This…

Middle school students examine data from the Great Lakes region, assess impact of climate changes, and relate climate and water processes in a concept map. After learning how lake water levels will likely decline, they listen to a story about a grandparent revisiting the lakeshore with a grandchild. In the role of the grandparent and then of the…

With a satisfying "Whoompf!" the air cannon sends a tennis ball the length of the school gym. The successful launch is met with cheers from the science club members and their partners--college engineering students from a local university. This air cannon activity was one of many learning opportunities that grew out of a partnership…

In teaching middle school students about diseases and microbes, it is surprising to discover how little they know about transmission. Misconceptions range from the idea that "giving a disease to someone" actually means "giving it away so you didn't have it anymore yourself" to a lack of understanding that tiny living things,…

One of the largest challenges in teaching introductory soil science is explaining the dynamics of soil infiltration. To aid students in understanding the concept and to further engage them in active learning in the soils laboratory course, we developed an exercise using Decagon Mini-Disk Infiltrometers with a tension head (h[subscript o]) of 2 cm.…

A soap film and bubble festival is held in order to celebrate the National Chemistry Week. The solution to make best soap solution, bubbles and wand are explained.

All animals must make choices regarding what foods to eat, where to eat, and how much time to spend feeding. Optimal foraging theory explains these behaviors in terms of costs and benefits. This laboratory exercise focuses on optimal foraging theory by investigating the winter feeding behavior of birds on the goldenrod gall fly by comparing…

In education, STS too often is viewed as a new kind of course--new material for use in teaching. However, this view of STS is fraught with the same kind of problems as traditional teaching of natural science and technology. This major problem is that information is merely transmitted to students by lecture, discussion, verification laboratories,…