NSS Learning and Teaching Strategies for the Chemistry …cd1.edb.hkedcity.net/cd/science/chemistry/nss/new/3_Victoria_Wong.… · Chemistry and Combined Science ... Experiment 1,

NSS Learning and Teaching Strategies for the Chemistry and Combined Science (Chemistry Part) Curricula Series

(4) Effective Integration of Practical Activities to Enhance Learning, Teaching and Assessment of Chemistry (New)

Experience Sharing:How is SBA implemented in the school?

MarymountSecondarySchoolMissVictoriaWong

List of Experiment

Laboratory Setup (Group)

Laboratory Setup (Individual)

Experiment 1, 3 (VA - Titration)

Duration~40 minutes

Design Experiment 1 (NaOH + monobasic acid)Experiment 3 (NaOH + dibasic acid)Unknown Indicator A / B

Indicators

Practice Sessions

Students vsUnknown Molarity + Unknown Indicator

Experiment 2, 4 (Qualitative Analysis)

Duration~30 minutes

Design Experiment 2 (4 colourless solutions)Experiment 4 (5 colourless solutions)

Manual (QA)

Manual (QA)

Expt 5 - Investigating Redox Reactions w/Common Oxidizing and Reducing Agents

Duration~40 minutes

Reason to Choose To emphasize on the importance of redox reaction in the syllabusTo foster deep learning by visualizing the colour change

Manual (Redox)

Manual (Redox)

Expt 6a - Electrolysis of Sodium Chloride Solutions at Different Concentrations

Duration~40 minutes++

Reason to Choose To serve as a diversified learning tool (student-centered learning approach)To help students summarize and organize the concepts in electrolysis

Results (Electrolysis)

Results (Electrolysis)

Expt 6b - Electrolysis of Dilute Tin(II) Chloride using Microscale Experiment

Duration~5 minutes

Reason to Choose To revise the redox concepts quickly (esp when waiting for the products of 6a)To learn the advantages of carrying out microscale experimentStudents find this experiment interesting!

Results (Microscale)

Expt 7 - Determining the Standard Enthalpy Change of Formation of CaCO3

Duration~15 mins (lab) + 20 mins (calculation)

Reason to Choose To put theories into practice (e.g. find ways to reduce heat loss, apply data from experiment to calculate ∆H)To learn the use of data logger system (e.g. temperature sensor + Xplorer)To examine their numeracy skills

Manual (Energetic)

Manual (Energetic)

Expt 8 - Investigating the Factors affecting the Rate of Reaction (3 Tasks)

Duration~80 minutes

Reason to Choose Task 1: pressure sensor + iPad w/airlink

(concentration, surface area)Task 2: microscale (concentration)Task 3: Na2S2O3(aq) + 2HCl(aq) → 2NaCl(aq)

+ SO2(aq) + H2O(l) + S(s)(temperature)

Manual (Task 1)

Experimental Setup

iPad with app – SPARKvue HD

iPad with app – SPARKvue HD

Manual (Task 2)

Manual (Task 3)

Reminder

Always prepare you lab ☺Take photos of your resultsRefine your lab manual if necessary

Communicate with your lab tech ☺For easy scanning, make your lab manual in ONE A4 or A3 page

THANK YOU

CHEM-IS-TRY!