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B9 Sci WK1

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FIRST TERM

WEEKLY LESSON NOTES


WEEK 1
Week Ending: 06-10-2023 DAY: Subject: Science
Duration: 100mins Strand: Diversity Of Matter
Class: B9 Class Size: Sub Strand: Materials
Content Standard: Indicator: Lesson:
B9.1.1.1 Show an understanding of formation of binary B9.1.1.1.1 Identify by name binary chemical
chemical compounds and their uses (Acids, Bases and Salts) compounds and discuss their uses. 1 of 2
Performance Indicator:
Core Competencies:
Learners can identify by name binary chemical compounds and discuss
DL 5.3: CI 6.8: DL 5.1: CI 6.6:
their uses
References: Science Curriculum Pg. 87
Key words: Compound, Element, Chemical symbol, Binary compound

Phase/Duration Learners Activities Resources


PHASE 1: Provide a hint or riddle for one of the compounds you will discuss
STARTER today, and have learners guess what it is.

Example: “I season my food with this white powder, but it's not sugar.
What am I?”

Answer: Table Salt

Share learning indicators and introduce the lesson.


PHASE 2: NEW Divide the learners into small groups. Pictures and
LEARNING charts
Provide each group with samples or images of the various materials.

Ask learners to discuss and identify each material based on their prior
knowledge.

Once identified, provide the actual names of the compounds in each


material:

Table salt: Sodium Chloride (NaCl)


Water: Dihydrogen Monoxide (H₂O)

Vinegar: Acetic Acid (C₂H₄O₂) Note: not binary but can be used

for contrast
Fuel (example: gasoline): various hydrocarbons Note: complex
mixture
Soap: Sodium or Potassium salts of fatty acids Note: varies by soap
Detergents: varies by detergent (Sodium dodecylbenzenesulfonate
can be an example)
Marble: Calcium Carbonate (CaCO₃)

Fertilizers: varies (Ammonium nitrate NH₄NO₃ can be an example)

Discuss the common uses of each material in our daily life.


Now that learners know the names of the compounds, ask them to list
the elements found in each.
Example: Sodium Chloride (NaCl) contains Sodium (Na) and Chlorine
(Cl).

Have them write the chemical symbols next to each element's name.

Assessment:
1. What is a compound?
2. What is the chemical symbol for Sodium?
3. Name a binary compound commonly found at home and list its
elements.
4. Why is vinegar not considered a binary compound?
PHASE 3: Use peer discussion and effective questioning to find out from learners
REFLECTION what they have learnt during the lesson.

Take feedback from learners and summarize the lesson.


Week Ending: 06-10-2023 DAY: Subject: Science
Duration: 100mins Strand: Diversity Of Matter
Class: B9 Class Size: Sub Strand: Materials
Content Standard: Indicator: Lesson:
B9.1.1.1 Show an understanding of formation of binary B9.1.1.1.2 Discuss the formation of binary
chemical compounds and their uses (Acids, Bases and Salts) chemical compounds 2 of 2
Performance Indicator: Core Competencies:
Learners can discuss the formation of binary chemical compounds DL 5.3: CI 6.8: DL 5.1: CI 6.6:
References: Science Curriculum Pg. 87
New words: Element, Molecule, Ion, Compound

Phase/Duration Learners Activities Resources


PHASE 1: STARTER Place a water molecule, salt crystal, a piece of iron, and a battery
on different corners of a table.

Ask: "What do these items have in common, and how might they
be different on a microscopic level?" This will set the context for
the lesson.

Share learning indicators and introduce the lesson.


PHASE 2: NEW Using visuals, define each term: element, molecule, ion, and Pictures and charts
LEARNING compound.

Have learners categorize a list of items (like H2O, NaCl, Fe, Ca 2+)
under the correct headings: element, molecule, ion, or compound.
Review and clarify misconceptions

Explain what binary compounds are, focusing on their formation.


Teach learners how to write the molecular formula of binary
compounds.

Write the formulas for compounds such as water, carbon (IV)


oxide, iron (II) sulphide, and magnesium oxide.

Using a Venn diagram or a chart, have learners compare and


contrast the properties of different binary chemical compounds
based on their composition. Consider properties like solubility,
conductivity, melting point, etc.

Engage in a discussion about why certain compounds share


properties and why some are vastly different.

Provide learners with modeling kits or craft materials like colored


balls (for atoms) and sticks (for bonds).

Assessment
1. What is the primary difference between an element and a
compound?
2. If a substance is made up of two types of atoms bonded
together, is it a molecule or a compound? Justify your answer.
3. Write the molecular formula for iron (II) sulphide.
4. Based on your models, how do the bonds in water differ from
those in carbon (IV) oxide?
PHASE 3: Summarize the lesson by reiterating the importance of
REFLECTION understanding the fundamental building blocks of matter.

Emphasize the fascinating world of compounds and how even the


tiniest differences can lead to vastly different properties.

Use peer discussion and effective questioning to find out from


learners what they have learnt during the lesson.

Take feedback from learners and summarize the lesson.

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