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ERIC Number: EJ1057148
Record Type: Journal
Publication Date: 2006
Pages: 5
Abstractor: As Provided
Reference Count: 2
ISSN: EISSN-1446-6120
The "Magical" Sphere: Uncovering the Secret
Petruševski, Vladimir M.; Bukleski, Miha
Science Education Review, v5 n4 p114-118 2006
A red sphere is seen at the bottom of a sealed glass tube filled with a colorless, transparent liquid. Holding the tube for a short period makes the sphere rise slowly from the bottom until it finally floats on the surface of the liquid. Instructions for preparing the demonstration are given, together with an explanation of the phenomenon. A similarity with the Galileo thermometer is pointed to. An example of guiding the discussion with students in the course of uncovering the secret behind the behaviour of the sphere is also given in the form of Socratic dialogue, relying on carefully selected questions that stimulate the students to think in a scientific way. The latter may also serve as an example of a teacher's approach during inquiry-based learning.
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Publication Type: Journal Articles; Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A