Dark matter makes up most of the matter in the universe but very little of a standard introductory physics curriculum. Here we present our construction and use of a spandex sheet-style gravity simulator to qualitatively demonstrate two aspects of modern physics related to dark matter. First, we describe an activity in which students explore the…

We develop an Easy Java Simulation (EJS) model for students to experience the physics of idealized one-dimensional collision carts. The physics model is described and simulated by both continuous dynamics and discrete transition during collision. In designing the simulations, we discuss briefly three pedagogical considerations namely (1) a…

By means of a simple device, made by students themselves, the movements of the Sun and the Moon can be studied at different latitudes. Using this device, it is easy to explain phenomena such as the midnight Sun, zenith pass and why the Moon "smiles". In this article, we show various photos of the Sun's movements, alongside their simulations on the…

Simulates the problems of rocket propulsion, hovering, and soft landing. (GS)

Newton's laws can be illustrated by having physics students participate in various activities while on roller skates. Several examples of such activities (including photographs) are provided. (JN)

Explains a process wherein students construct a flickerbook that can simulate both transverse and longitudinal wave motion and can be used to demonstrate the relationship between velocity and frequency for constant wavelength. (GS)

Describes an elastic Foucault pendulum designed to demonstrate how the rotation of the plane of oscillation depends on geographical latitude, and shows that this rotation vanishes at the equator. (GA)

Describes a teaching strategy designed to help high school students learn mechanics by involving them in simple experimental work, observing didactic films, running computer simulations, and executing more complex laboratory experiments. Provides an example of the strategy as it is applied to the topic of projectile motion. (TW)

Investigates the construction of understanding of the motion of an object down an inclined plane which takes place through the process of model building in an integrated algebra, trigonometry, and physics class. Discusses four major themes related to student learning through modeling that emerged from the results. Discusses implications for…