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SHS 2 Chemistry 2nd Semester Week 3 Lesson Plan

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Weekly Learning Plan
Subject	Chemistry	Week	3
Duration	60 minutes	Form	SHS 2
Strand	SYSTEMATIC CHEMISTRY OF THE ELEMENTS	Sub-Strand	PERIODICITY
Learning Outcome(s)	2.2.1.LO.1 - Predict and describe the trends of chemical and physical properties of elements and their compounds in the periodic table 2.2.1.LO.2 - Predict and describe the physical and chemical properties of the halogens as well as their uses in everyday life
Content Standard	2.2.1.CS.1 2.2.1.CS.2
Learning Indicator(s)	2.2.1.LI.1 - Demonstrate knowledge and understanding of the pattern of the physical and chemical properties of the halogens as well as their uses. Explain the physical and chemical properties of the halogens (Group 17 elements). Talk for Learning Approach: • In mixed-ability groups, discuss the variations in the physical properties of the halogens under the following headings: a. Physical State b. Melting and Boiling points c. Bond energies • Discuss any anomalies in the bond energies. Collaborative Learning: • In mixed-ability groups, discuss the electron configurations and the exhibition of variable oxidation states of the halogens. • Discuss the similarities in chemical nature of the halogens. • Deduce the differences in the reactivity of the halogens based on their standard electrode potential values. • Use the following reactions for your discussions: a. Halogens with halide ions (displacement reactions). b. Halide ions with silver ions (precipitation reactions)
Lesson Focus	Demonstrate knowledge and understanding of the pattern of the physical and chemical properties of the halogens as well as their uses.
Previous Knowledge	Learners recall related ideas, vocabulary or experiences from earlier lessons and everyday contexts.
Lesson Objective(s)	Describe the key idea in: Demonstrate knowledge and understanding of the pattern of the physical and chemical properties of the halogens as well as their uses. Apply the idea through guided and independent learning activities. Demonstrate understanding through oral responses, written work or practical performance.
Essential Question(s)	What chemical model, relationship, evidence or calculation is central to Demonstrate knowledge and understanding of the pattern of the physical and chemical properties of the halogens as well as their uses. Explain the physical and chemical properties of the halogens (Group 17 elements). Talk for Learning Approach: • In mixed-ability groups, discuss the variations in the physical properties of the halogens under the following headings: a. Physical State b. Melting and Boiling points c. Bond energies • Discuss any anomalies in the bond energies. Collaborative Learning: • In mixed-ability groups, discuss the electron configurations and the exhibition of variable oxidation states of the halogens. • Discuss the similarities in chemical nature of the halogens. • Deduce the differences in the reactivity of the halogens based on their standard electrode potential values. • Use the following reactions for your discussions: a. Halogens with halide ions (displacement reactions). b. Halide ions with silver ions (precipitation reactions)? How can laboratory observations, particle models, equations, graphs or quantitative data be used to explain the chemistry? How can the chemical principle from this lesson be applied to predict the behaviour of a new substance or reaction?
Pedagogical Strategies	Think-Pair-Share Collaborative Learning Problem-Solving Experimental/Practical Learning Digital/Simulation-Based Learning Model-Based Learning
Teaching & Learning Resources	Chemistry textbook/reference materials Whiteboard/markers Learners' notebooks Periodic table Test tubes/rack and droppers where available Safe reagent samples or teacher-prepared demonstration materials Periodic-table chart Orbital/electron-configuration diagrams or modelling materials Molecular/bonding models or improvised model materials pH indicators/meters or charts where available Titration/solution preparation apparatus where appropriate
Key Notes on Differentiation
Content	Use particle diagrams, colour-coded equations, formula prompts, worked examples and simplified data tables for learners who need support. Extend advanced learners with multi-step calculations, unfamiliar data, mechanism/property comparisons or more demanding analytical interpretation.
Process	Use mixed-ability grouping with rotating roles such as apparatus manager, recorder, calculator, safety monitor and presenter during practical/problem-solving work. Where apparatus or chemicals are unavailable, use curriculum-aligned simulations, videos, virtual laboratories, data sets and teacher demonstrations without changing the learning objective.
Product	Allow evidence such as balanced equations, calculations, graphs, molecular/particle models, practical reports, chromatogram interpretations, comparison tables or oral explanations. Assess chemical accuracy, safe procedure, correct units/notation, quantitative reasoning, evidence interpretation and ability to justify conclusions.
Success Criteria	Learners use correct subject vocabulary. Learners complete the main task with reasonable accuracy. Learners explain or demonstrate how the concept applies in a new situation.
Homework	Answer structured questions and identify one everyday application of the concept.

Lesson Activities
Stage	Teacher Activity	Learner Activity	Assessment / DoK
Starter10 minutes	Present a diagram, specimen, data set or everyday situation connected to the pattern of the physical and chemical properties of the halogens as well as their uses and ask learners what they observe.	Share prior knowledge, listen to peers and record the lesson question in their notebooks.	Not provided.
Activity 115 minutes	Use a labelled diagram, model, experiment, data table or safe demonstration to explain the pattern of the physical and chemical properties of the halogens as well as their uses.	Observe carefully, record key terms and answer oral questions.	Ask learners to identify the key feature, variable, process or relationship.
Activity 220 minutes	Guide groups to observe, classify, measure, compare or explain evidence related to the pattern of the physical and chemical properties of the halogens as well as their uses.	Work in groups to complete the observation, classification, measurement or explanation task.	Review group responses for accurate science vocabulary and evidence.
Activity 310 minutes	Give a new case, data set or observation and ask learners to predict or explain the outcome.	Apply the concept to the new case and support the answer with evidence.	Use an exit task that asks for a prediction, explanation or calculation.

Lesson Closure

Summarise the pattern of the physical and chemical properties of the halogens as well as their uses and correct one common misconception using learner examples. State one thing learned and complete the exit response.

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