Since its discovery in 1932, PTC paper has been a popular activity for students studying genetics. It is used to determine the genotypes of individuals, and is bitter tasting. It has been tied to the evolutionary advantage allowing some primates to detect toxins in a potential food. Foods containing PTC like substances may be avoided by tasters (broccoli, water cress).
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Health Canada says it received more than 100 consumer reports over the last year involving batteries — everything from overheating to starting fires.
Source: Battery fires: The potential danger hiding in your kitchen junk drawer at Christmas and year-round
Studying living organisms in biology and life science is a “natural” way to engage students and
nurture their interest in biology. Keeping live animals requires thoughtful consideration of learning
goals, school policies, and potential dangers.
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Closed Captioning Update
The STAO Safety Mindedness (SSM) program is an interactive online training program to train teachers on common safety-related issues in a typical Science (Grades 9–12) and Science and Technology (Grades K–8) programs. SSM is an easy to use, flexible and cost-effective strategy to meet your school’s safety training needs. The training provided by this program helps promote a culture of safety mindedness in your school. SSM has just been updated to include closed captioning.
Both the elementary and secondary versions of SSM are divided into 8 convenient modules. The content of each module is consistent with STAO’s safety reference texts, ‘Safety in Elementary Science and Technology’ and ‘Safe On Science, Second Edition’.
SSM is available, free of charge, to all teachers and can be accessed from the STAO website, blog, or via the following links. School boards are encouraged to run SSM off their internal servers at no cost. Contact email@example.com for details.
School Board Customization Services Available.
SSM can be customized to include board-specific content, e.g., logos, inserts (customization charges will apply). Contact firstname.lastname@example.org for details.
‘Safety First’ describes the vision and goals that all science teachers share for school science labs. We all say that safety always comes first! But what does this mean in practice?
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Science is a hands-on laboratory class. You will be doing many laboratory activities that require the use of hazardous chemicals. Safety in the science classroom is the #1 priority for students, teachers and parents. To ensure a safe science classroom, a list of rules has been developed and provided to you in this student safety contract. These rules must be followed at all times. Two copies of the contract should be used. One copy should be signed by both the student and a parent or guardian and turned in before participating in the laboratory. The second copy should be kept in the student’s science notebook as a constant reminder of the safety rules.
Click here to go to the source of the safety contract
sudan IV, oil and water
Curriculum Connection: High-school Biology
I was preparing Sudan IV for a nutrient lab for grade 11 SBI3C biology. In order to use the chemical as an indicator for fats and oils, I needed to mix the Sudan IV powder with ethanol. I followed proper safety precautions (gloves, goggles, fume hood). Somehow, a small amount of the Sudan IV powder got on my hand. I promptly washed my hands with soap and water, and checked the MSDS which advised me to flush the exposed area with water. After flushing, my hand appeared to be clean. Continue reading
Prevent Tragic Accidents with Flammable Liquids
Girl in Flames Runs from School Lab Explosion! Lab Accident Sends Teacher and Students to
Hospital! Teacher Charged After Experiment Goes Awry! Continue reading