Learning & Teaching Resources on Safety in Science Laboratories June 2004

Exemplars of Activities Laboratory Safety Rules Laboratory Safety Rules Eye Protection Eye Protection Safety Information on Chemicals Safety Information on Chemicals Risk Assessment Risk Assessment What if a Laboratory Accident Happens? What if a Laboratory Accident Happens?

Laboratory Safety Rules “ The biggest danger in the lab is YOU (student)! You are a danger whenever you are either ignorant or careless or both. Remember this because the person most likely to suffer from your mistakes is YOU! ” “ The biggest danger in the lab is YOU (student)! You are a danger whenever you are either ignorant or careless or both. Remember this because the person most likely to suffer from your mistakes is YOU! ” ASE (1996) Safeguard in the School Laboratory, ASE

Laboratory Safety Rules Introduction Introduction Group Discussion Group Discussion –Ask students to discuss and write the rules they should observe in the lab Review the results of discussion Review the results of discussionresults of discussionresults of discussion Summary Summary Signing a “ Safety Contract ” and distribute copies of lab safety rules Signing a “ Safety Contract ” and distribute copies of lab safety rules Select safety rules applicable to your class Select safety rules applicable to your class Posters, slogans, websites, quizzes Posters, slogans, websites, quizzes Reference Reference –Flinn Scientific's "Ideal" Student Safety Contract Contract.pdf "Ideal" Student Safety Contract Contract.pdf"Ideal" Student Safety Contract Contract.pdf –“ Contracting for Safety ”

“ Safety Contract ” Kei Heep Secondary School

Illustrated Safety Rules safety_rules/ safety_rules/ safety_rules/ safety_rules/

Eye Protection Importance of eye protection Importance of eye protection Illustrated by a student experiment or teacher demonstration on irreversible denaturing of eye-white by acid Illustrated by a student experiment or teacher demonstration on irreversible denaturing of eye-white by acid Discuss on when eye protection should be worn Discuss on when eye protection should be worn Demonstration/video on the use of eye wash unit Demonstration/video on the use of eye wash unit

Safety Information on Chemicals Know how to locate and understand safety information of chemicals Know how to locate and understand safety information of chemicals Chemical formula, hazards, safety precautions, emergency, disposal, etc Chemical formula, hazards, safety precautions, emergency, disposal, etc

Online MSDS

Risk Assessment An analysis of a practical activity to identify hazards and to take precautions to minimise the risk An analysis of a practical activity to identify hazards and to take precautions to minimise the risk Involve students in thinking about and discussing safety in real context, rather than just being told what to do Involve students in thinking about and discussing safety in real context, rather than just being told what to do Novel experiments in science publications, open-ended investigations and project learning, etc. Novel experiments in science publications, open-ended investigations and project learning, etc. Have to be checked by teachers Have to be checked by teachers

Risk Assessment Procedures: Procedures: –Identifying hazards (Materials / Procedures / Equipment) –Assessing how likely the hazard will actually cause harm (risk) –Deciding what control measures to reduce risk to acceptable level –Finding how to dispose of hazardous residues –Review Examples #1, #2, #3 Examples #1, #2, #3 Examples #1#2#3 Examples #1#2#3 References: Safety Handbook, Hazcards, Student Safety Sheets, ICSCs, MSDSs, CLIP (Chem Lab Information Profile), etc. References: Safety Handbook, Hazcards, Student Safety Sheets, ICSCs, MSDSs, CLIP (Chem Lab Information Profile), etc.Student Safety SheetsStudent Safety Sheets

Risk Assessment – Think thrice before you act Hazards Hazards

Reducing the Risks Using safer alternatives Using safer alternativessafer alternativessafer alternatives Modifying experimental procedures Modifying experimental procedures Reducing the scale of experiments Reducing the scale of experiments Reducing the concentrations of solutions Reducing the concentrations of solutions Using protective measures Using protective measures Wearing appropriate PPE Wearing appropriate PPE Alasdair Thorpe, Chemistry Review, Sept 2000

Risk Assessment Forms Forms Annotate daily used documents (point-of-use texts) e.g. schemes of work, lesson plans, worksheets, textbooks, lab request forms and apparatus Annotate daily used documents (point-of-use texts) e.g. schemes of work, lesson plans, worksheets, textbooks, lab request forms and apparatusschemes of worklesson plans worksheetstextbookslab request forms apparatusschemes of worklesson plans worksheetstextbookslab request forms apparatus –A better chance that they will be read and followed –Less demanding to accomplish and more likely to be carried out –Assessment more likely to be modified when the activities have be be modified Managing Risk Assessment in Science, L196, CLEAPSS

What if a Laboratory Accident Happens? Know the proper actions to be taken in case of laboratory accidents Know the proper actions to be taken in case of laboratory accidents Be aware of the nature and causes of laboratory accidents, and the basic safety precautions for prevention Be aware of the nature and causes of laboratory accidents, and the basic safety precautions for prevention 12 adapted cases for discussion 12 adapted cases for discussion Eye accidents (3), fire, heat burn, cut, explosion (2), animal bite, corrosive chemicals (2), toxic gas Eye accidents (3), fire, heat burn, cut, explosion (2), animal bite, corrosive chemicals (2), toxic gas

Microscale Version 0.4 M NaOH Pins Shampoo solution

What if a Laboratory Accident Happens? Conc. Sulphuric Acid Methyl 4-hydroxybenzoate Iron/sulphur Reaction

Safety in Exploring Science Interactive learning package Interactive learning package On-line and CD-ROM versions On-line and CD-ROM versions

Safety Quiz Questions with feedbacks to both correct and incorrect answers Questions with feedbacks to both correct and incorrect answers Enable students to evaluate and improve their understanding on laboratory safety Enable students to evaluate and improve their understanding on laboratory safety Written Safety Test in “ Safety Handbook for California Public Schools ” Written Safety Test in “ Safety Handbook for California Public Schools ” Written Safety Test Safety Handbook for California Public Schools Written Safety Test Safety Handbook for California Public Schools Wordsearch Wordsearch Wordsearch

On-line Safety Quiz Interactive and Interesting MC Questions “ Millionnaire Game ” Interactive and Interesting MC Questions “ Millionnaire Game ” Millionnaire Gamehttp://jasonhk.uhome.net/ Millionnaire Gamehttp://jasonhk.uhome.net/ Chemistry Safety Quiz Chemistry Safety Quiz Safety in Hargrave's Laboratories Certificate of Completion Safety in Hargrave's Laboratories Certificate of Completion Certificate of Completion Certificate of Completion Fire Safety Quiz Fire Safety Quiz “ Hot Potatoes ” create interactive MC, short-answer, jumbled-sentence, crossword, matching/ordering and gap-fill web-based exercises “ Hot Potatoes ” create interactive MC, short-answer, jumbled-sentence, crossword, matching/ordering and gap-fill web-based exercises

Other Strategies PowerPoint on Safety facilities and PPE modulist.html PowerPoint on Safety facilities and PPE modulist.htmlSafety facilities and PPE modulist.htmlSafety facilities and PPE modulist.html Self-learning e.g. 自然練習 Self-learning e.g. 自然練習 Role play Role play Certificates Certificates Certificates Project work e.g Fire Escape Route Indicator Project work e.g Fire Escape Route IndicatorFire Escape Route IndicatorFire Escape Route Indicator

Health, Safety & Risk Student worksheets e.g. Student worksheets e.g. –Risk assessment in science experiments –Safety symbols Can be downloaded in Word format from networks/learnnet/hsr.htm Can be downloaded in Word format from networks/learnnet/hsr.htm networks/learnnet/hsr.htm networks/learnnet/hsr.htm

More Learning Activities curriculum.html curriculum.html curriculum.html curriculum.html

Inquiring Safely Terry Kwan & Juliana Texley (2003) Inquiring Safely: A Guidebook for Middle School Teachers, NSTA Terry Kwan & Juliana Texley (2003) Inquiring Safely: A Guidebook for Middle School Teachers, NSTA Entire book at pdfs/store/PB166X2np.pdf Entire book at pdfs/store/PB166X2np.pdf pdfs/store/PB166X2np.pdf pdfs/store/PB166X2np.pdf

Acknowledgement Dr Albert C Cheung(City University of Hong Kong) Ms Chu Suk Ching(True Light Middle Sch of HK) Dr Joseph K Kwan(HKUST) Mr Lee Charn Kau(HKTA Ching Chung Sec Sch) Mr Leung Kar Yau(retired) Mr Lo Kam Cheong(CCC Kei Heep Sec Sch) Mr Mok Ming Wai(United Christian College) Mr Pun Kwong Cheung(SKH Tsang Shiu Tim Sec Sch)

Thank you ! Mr W C HO Tel