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ERIC Number: EJ933498
Record Type: Journal
Publication Date: 2005
Pages: 3
Abstractor: ERIC
Reference Count: 4
ISSN: ISSN-0269-2465
Upthrust or Air Resistance--Where Are the Particles?
Parry, Malcolm
Primary Science Review, n87 p20-22 Mar-Apr 2005
Two or three years ago, there was an exchange of several articles in "Primary Science Review" about the question: "What is the best way of naming the forces acting on a descending parachute?" (Harrison, 2001; Harlen, 2002; Sell, 2002). Stuart Harrison reported that, according to the Qualifications and Curriculum Authority (QCA), a third of 11-year-old children referred to "upthrust" in a SAT (Standard Assessment Test) question, when the QCA preferred "air resistance" because upthrust "is miniscule in comparison to the force of air resistance for a falling parachute". Sell considered it harsh that the QCA regarded use of the term upthrust as uncreditworthy in its mark scheme. More recently, Lee and Tan (2004) have suggested that particle models of matter should be employed in primary teaching. This article therefore attempts to show how particles can be used to help teachers and children grasp the difference. (Contains 5 figures.)
Association for Science Education. College Lane Hatfield, Herts, AL10 9AA, UK. Tel: +44-1-707-283000; Fax: +44-1-707-266532; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A