Level 4

Alaska Science
Key Element B6

A student who meets the content standard should employ strict adherence to safety procedures in conducting scientific investigations.

gold rule

Performance Standard Level 4, Ages 15–18

Students examine laboratory and community safety procedures, identify how an individual affects the safety of the group, and practice safe behavior in the classroom and laboratory.

Sample Assessment Ideas

gold rule

Sample Assessment Ideas

  • Students review the risks associated with medical wastes, and accurately identify the hazards of contaminated fomites.

  • Students demonstrate proper techniques of lab safety while determining properties of four unknown, clear, colorless liquids (pH, conductivity, flammability, odor).

Standards Cross-Reference gold rule

Standards Cross-References
( Alaska Department of Education & Early Development Standards

National Science Education Standards

Hazards and the potential for accidents exist. Regardless of the environment, the possibility of injury, illness, disability, or death may be present. Humans have a variety of mechanisms—sensory, motor, emotional, social, and technological—that can reduce and modify hazards. (Page 197)

Natural and human-induced hazards present the need for humans to assess potential danger and risk. Many changes in the environment designed by humans bring benefits to society, as well as cause risks. Students should understand the costs and trade-offs of various hazards ranging from those with minor risk to a few people to major catastrophes with major risk to many people. The scale of events and the accuracy with which scientists and engineers can (and cannot) predict events are important considerations. (Page 199)



Benefits and costs of proposed choices include consequences that are long-term as well as short-term, and indirect as well as direct. The more remote the consequences of a personal or social decision, the harder it usually is to take them into account in considering alternatives. But benefits and costs may be difficult to estimate. (Page 166)

Social trade-offs are often generational. The costs of benefits received by one generation may fall on subsequent generations. Also, the cost of a social trade-off is sometimes borne by one generation although the benefits are enjoyed by their descendants. (Page 166)

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