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Categories: General Interest
This article provides some recommendations for: storing flammable liquids; the quantities to be kept in schools; the types of storage cabinets usable; and the need to vent those cabinets. Such venting would neither violate the Ontario Fire Code, nor compromise the ULC... read moreCategories: General Interest
There are millions of chemicals cited in the scientific literature and thousands more are being added every year. There is a lot of uncertainty and debate about the human health impacts of any particular chemical. Of the seven major metals know to Greeks, Mercury has... read moreCategories: General Interest
Safety must be foremost in the minds of every presenter at STAO/APSO sponsored events. Every person who does demonstrations should be knowledgeable about the safe handling and disposal of all chemicals and the safe use of all demonstration equipment. Demonstrators... read moreCategories: General Interest
A summary of the STAO Safety Committee’s beliefs about safety in the science classroom. This content is only available to... read moreCategories: General Interest
Taste experiments are normally run to test for the four kinds of taste receptors in the tongue. Students should be directed to run this experiment as a class in the school cafeteria, or BETTER, at home, using the following household chemicals: dilute table salt... read moreCategories: General Interest
It is widely recognized that Science is a process and an activity fully as much as it is an organized body of knowledge and that, therefore, it cannot be learned in any deep and meaningful way by reading and discussion alone. The Ontario Ministry of Education... read moreCategories: General Interest
It is the responsibility of all those working in a laboratory to be aware of potential hazards and to prevent them from becoming accidents. However, whenever chemicals are in use, there is a danger of spillage. A well-organized science program will have available a... read moreCategories: General Interest
A relatively large fraction of the Canadian population requires corrective lenses to obtain optimal vision. While many of these individuals choose to wear eyeglasses, an increasing number are being fitted with contact lenses. The recent technological advances in the... read moreCategories: General Interest
The techniques of Science teaching have changed from lectures and demonstrations to those involving a significant amount of “hands on” activities. This is reflected in the new curriculum, which even mandates that certain experiments be carried out. As a... read moreCategories: General Interest
Like many other technological developments of the twentieth century, the laser has moved rapidly from the scientific research laboratory to widespread use in everyday life. It is possible to design a laser for virtually any wavelength in the electromagnetic spectrum... read more