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Fidget Spinner and the Principle of Conservation of Angular Momentum: A 3D-Print Demonstration Model
de Almeida, Pamella Aline; Onisaki, Hadassa; de Almeida, Juarez Trindade; Costa, Lúcio Campos; Brockington, Guilherme – Physics Education, 2020
Principles of conservation are essential to the physical understanding of the universe. When thinking about its teaching, especially aimed at basic education, experimental activities can be great allies for its understanding. In this article, we present a demonstrative model using a fidget spinner arranged in a structure constructed using 3D…
Descriptors: Science Instruction, Scientific Principles, Motion, Physics
Dean, Natalie L.; Ewan, Corrina; Braden, Douglas; McIndoe, J. Scott – Journal of Chemical Education, 2019
Comprehension of the 3D structure of objects usually represented in 2D is a critical part of understanding molecular geometries. The frequency with which students actually get hands-on with 3D molecular structures is often limited to a singular laboratory session. We sought to develop a set of molecular shapes that were inexpensive enough not only…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Science Laboratories
Greenslade, Thomas B., Jr. – Physics Teacher, 2011
The geometrical shapes in Fig. 1 recently came into the Greenslade Collection. The semi-triangular pieces of wood looked like slices from a pie, each 22.5 degrees in angular width. They were tied together with a thin leather band tacked around their curved surfaces. What is this apparatus?
Descriptors: Geometry, Geometric Concepts, Science Instruction, Teaching Methods

Stephenson, Paul – Mathematics in School, 1992
Describes an activity to construct polyhedra resembling molecular structures. Each face forms regular polygons made up of balls. Step-by-step directions are provided to perform the constructions. (MDH)
Descriptors: Atomic Structure, Geometric Concepts, Geometric Constructions, High Schools