We all need to be aware of our nutritional requirements, how they differ and change throughout life, and how we can plan our diets in order to meet our needs. This video looks at what nutrients do, how and why our nutritional requirements vary, and explores three situations where menu planning is particularly important for achieving a balanced diet (teenagers going on a wilderness camp, choosing to be vegetarian and living on a budget).
Producers: Classroom Video
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Mechanisms of Evolution
Mechanism of Evolution covers the 3 main mechanisms of evolution, Genetic Drift, Mutation and Natural Selection. By modelling the process using counters, it unlocks the mechanical process of evolution.
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Population Pressure – Mexico City
Pushed off the land by population growth, thousands of people are pouring into Mexico City. The quality of life is often worse than their previous existence. For government, massive migration creates enormous transport, amenities and pollution problems. If planners can find solutions to these problems then this will offer hope to cities everywhere in the developing world.
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Multicultural Food
This video is an international journey through four different cultures by way of their traditional foods. It explores the influences of religion, landscape, lifestyles, and ingredients on food presentation and preparation from Japan, First Nations, Lebanon, and Italy.
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Millikans Oil Drop Experiment
Two experiments are described and filmed. Topics include using static drops to balance mg against nqe; plotting voltages on drops; falling drops give size of drop; reasons for experimental error; Millikan’s questionable scientific method; the remarkable accuracy of Millikan’s work.
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Mining in Canada
Topics covered include the mining process, open pit & underground; the economy, we look at four mining towns to see the cashflow generated by a mine. Also the flow on effect on jobs and services; the environment, acid rock drainage produced and treated at a shut down mine. Revegetating rock and tailings dumps. Acid rain; the social life in a mining town and recovery after a mine closure.
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Light Fantastic
A series of examples of what light can do. Uses footage from our senior videos. Topics include sources of light; what is light – what a photon looks like; transparency and reflection – explanation; refraction, prisms, optical fibers; splitting light into colors – prism, soap films, diffraction gratings and glasses; mixing light to produce white; polarized light – fun experiments.
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Location
Everything is where it is for a reason. This video investigates the basic concepts of ‘friction of distance’ and ‘geographical inertia’ to explain why things are where they are. We also look at historical, environmental and economic factors that affect the location of homes, business and industry, towns, power sources, bridges, tunnels, rocket launch-pads and canals. The effects of changing technology on location are also examined.
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Latitude and Longitude
The video examines Earth as a sphere, it defines latitude and longitude and explores how this global referencing system is applied. The video follows the crew of a 30,000 ton container ship as they navigate their way around the globe. Subject areas covered include: great circles and small circles; latitude and longitude defined; finding locations; the relevance of zero longitude and why it passes through Greenwich; why the Equator is zero degrees Latitude; defines the distance in kilometers between degrees of longitude and why minutes and seconds must be used to describe locations with greater accuracy; how the shortest distance between sea ports is along great circles; how the meter and nautical mile is determined as a unit of measurement; using GPS receivers.