ABSTRACT
Groups of children use a frame 'quadrat' or PE hoop as a sampling tool to isolate an area of ground to survey in detail. They ask and answer questions about the biodiversity of sample areas in the school grounds by observing and surveying the plants inside the quadrat. Biodiversity describes the variety of different types of life found on Earth and it is a measure of the variety of living things present in different ecosystems. In this activity, the quadrat provides a standard size sample area to study, so that comparisons can be made between different microhabitats and meaningful conclusions drawn using patterns in the data collected. Research the 'A Thousand Wishes' artworks created by Denis Brown. Simple frame quadrats are adequate for this enquiry; for more detailed surveys, though, grid quadrats that are subdivided into a grid of smaller squares may be used, with the quadrat positioned according to a random placement sampling method.
