Every year, a million visitors are drawn to the Salisbury Plain, in southern England, to gaze upon a mysterious circle of stones. Who built Stonehenge? What was its purpose? A new generation of researchers is tackling these questions, finding important clues in the landscape surrounding Stonehenge -one of the densest concentrations of prehistoric structures in the world. The story of Stonehenge is being rewritten.
Subjects: General
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Doctors’ Diaries
Over the past 21 years, NOVA has followed a group of seven doctors from their first day at Harvard Medical School in 1987. All young, bright and accomplished, none of them could have predicted what it would take, personally and professionally, to become a member of the medical tribe. In this special two-part program, NOVA returns one last time to get an update on the kind of doctors, and people, they have become.
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What is Science?
What are the underlying assumptions, good and bad, we have about science and scientists? What is the relationship between science and technology, science and religion, science and society? This program gets to the roots of what science is.
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Experiments with Water
The following program has two components. Firstly the scientific concept of water surface tension is carefully explained through discussion and a variety of activities. Secondly, the program carefully explains the steps required to undertake a science experiment and therefore the expectations of what the students will be required to do when they undertake their own experiments.
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Thinking Like A Scientist: Scientific Method #1
Teach students to think like scientists with this colorful, kid-friendly introduction to the scientific method. Difficult terms like ‘hypothesis’ and concepts like ‘interpreting results’ will be made understandable with the use of real world activities. Each of the simplified steps is converted to a memorable icon (poster ready art of steps available on-line). Students will understand how that already use (prior knowledge) information to investigate through questioning, observing, guessing, testing and evaluating ideas and phenomena.
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The Periodic Table
Reviews Mendeleev’s periodic table and the theory of the nuclear structure of the atom. An examination of Bohr’s model of the atom explains how this theory led to the organization of the modern periodic table. Students use the periodic table to make predictions about the chemical properties and reactions of representative elements.
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Reaction Equations
Discusses formation and decomposition reactions: how to predict and test compound classification as ionic, molecular, acid or base; how to name the compounds involved; the law of conservation of mass; and how to balance equations.
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Combustion and Replacement Reactions
Compares combustion reactions to respiration, explores solubility, explains polyatomic ions and multi-valent metals, and investigates single and double replacement reactions.
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Matter and Energy on the Move
Examines the movement of matter into and out of living cells across a semipermeable membrane and the role energy plays. The concepts of diffusion, osmosis, concentration gradients, and active and passive transport are explained and demonstrated.
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A Close-up View of Growth
Explains how to prepare a wet mount slide, use stains to examine the features of plant and animal cells, and calculate magnification, field to view and scale. Examines the growth, division, and differentiation of cells.