by STAO ADMIN | Dec 12, 2019
In this inquiry-based activity, students will design and build a model of a greenhouse using mirrors and/or lenses that can be used to grow food all year. They will use their knowledge of optics to make their greenhouse more efficient (i.e., optimal temperature for...
by STAO ADMIN | Dec 11, 2019
Paper “clickers” are a simple and cost effective way to boost students’ conceptual understanding and improve their metacognitive skills. All you need is a computer, data projector and paper multiple choice answer cards (clickers) for each student, and you can get...
by STAO ADMIN | Nov 14, 2019
Most of us know from experience that the force of friction caused by air resistance increases as the relative speeds increases. The purpose of this activity is to develop a proportionality statement, and then an equation, that describes the relationship between air...
by STAO ADMIN | Nov 12, 2019
In this demo, a polyethylene rod is charged by rubbing with wool. The charged rod is then used to bend a stream of water flowing from a tap. Different substances have different attractions for electrons. When two materials are rubbed together, electrons will leave the...
by STAO ADMIN | Nov 12, 2019
We are most accustomed to making observations directly with our eyes. Students therefore often find it conceptually challenging to comprehend the reasoning and logic used by scientists studying atoms that they cannot directly see. This activity allows the students to...
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