Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 1st Term
Week: 2
Age: 15 years
Duration: 45 minutes
Subject: Music
Curriculum Theme: Music
Previous Lesson: Notation: Staff and Tonic Solfa.
Topic: Scales.
Subject Matter: Accidentals, Key Signature, Major Scales, Minor Scales, Tonality, Diatonic Scale, Pentatonic Scale, Composing a Short Melody using Pentatonic Scale.

Specific Objectives

By the end of the lesson, pupils should be able to:

Cognitive Domain:

Define accidentals and key signatures.
Explain the concept of tonality in music.
List different types of scales.
Differentiate between diatonic and pentatonic scales.

Affective Domain:

Appreciate the importance of scales in musical composition.
Show interest in identifying various scales in musical pieces.

Psychomotor Domain:

Identify accidentals and key signatures on a musical staff.
Construct simple major and minor scales.
Compose a short melody (not more than 4 bars) using a pentatonic scale.

Collaborate with peers in discussing different scales.
Share their composed pentatonic melodies with the class.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Music, Senior Secondary 1.
State Unified Scheme of Work for Music, SSS 1.
Adedeji, F. (2010). Fundamentals of Music Theory for Senior Secondary Schools. Ibadan: University Press PLC.
Online resources on music theory and scales.

Instructional Materials

The teacher will teach this lesson with the aid of:

Scale charts.
Key signature posters.
Keyboard diagram/projected image of a keyboard.
Sample pentatonic melodies (audio or sheet music).
Whiteboard and markers.

Rationale for the Lesson

This lesson helps pupils understand the basic building blocks of melodies and harmonies in music. Understanding scales is important for pupils to be able to read, write, and compose music effectively, connecting theoretical knowledge to practical application.

Prerequisite/Previous Knowledge

Pupils should have basic knowledge of musical notes, the staff, and simple rhythmic values from previous lessons.

Lesson Content/Board Summary

Scales

Accidentals

Accidentals are symbols placed before a musical note to alter its pitch. They affect the note for the duration of the measure in which they appear, or until cancelled by another accidental.

The following are types of accidentals:

Sharp (#) – Raises a note by a semitone.
Flat (b) – Lowers a note by a semitone.
Natural (♮) – Cancels a previous sharp or flat, restoring the note to its original pitch.

Key Signature

A key signature is a set of sharps or flats placed on the staff at the beginning of a piece of music. It indicates the key of the music and shows which notes are to be consistently played sharp or flat throughout the piece.

The purpose of a key signature is to avoid writing accidentals repeatedly for the same notes.

Tonality

Tonality refers to the organization of pitches around a central pitch, called the tonic. It gives music a sense of a tonal center or “home key.”

The main types of tonality are:

Major Tonality – Often associated with bright, happy sounds.
Minor Tonality – Often associated with darker, sadder sounds.

What are Scales?

A scale is a series of musical notes arranged in ascending or descending order of pitch. Scales form the melodic and harmonic framework for most music.

Diatonic Scale

A diatonic scale is a seven-note scale that includes five whole steps (tones) and two half steps (semitones) within an octave. Major and minor scales are types of diatonic scales.

Characteristics of a diatonic scale:

It contains seven distinct pitches within an octave.
It has a specific pattern of whole and half steps.
It forms the basis of Western classical music.

Pentatonic Scale

A pentatonic scale is a musical scale with five notes per octave. It is one of the most common scales and is found in many musical cultures around the world, including African, Asian, and folk music traditions.

Characteristics of a pentatonic scale:

It contains five distinct pitches within an octave.
It typically avoids semitones, giving it a consonant and open sound.
It is easy to use for improvisation and melody composition.

Major Scales

A major scale is a diatonic scale characterized by a specific pattern of whole and half steps: Whole-Whole-Half-Whole-Whole-Whole-Half (W-W-H-W-W-W-H).

Example: C Major Scale (C-D-E-F-G-A-B-C).

Minor Scales

A minor scale is a diatonic scale that typically creates a more somber or melancholic sound compared to a major scale. There are three main types of minor scales:

Natural Minor Scale – Follows the pattern W-H-W-W-H-W-W.
Harmonic Minor Scale – Raises the 7th degree by a semitone when ascending and descending.
Melodic Minor Scale – Raises the 6th and 7th degrees ascending, but lowers them descending.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction/Review
Teacher’s Activity: The teacher greets the pupils and reviews the previous lesson on musical notes and the staff. The teacher then asks pupils what they think makes a melody sound sad or happy, leading to the concept of scales.
Pupils’ Activity: Pupils respond to greetings and questions, recalling previous knowledge and contributing ideas.
Learning Point: Pupils connect prior knowledge to the new topic and are introduced to the concept of scales and their expressive qualities.

Step 2: Accidentals and Key Signatures

Time: 10 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher defines accidentals (sharp, flat, natural) and demonstrates their placement and effect on a note using a chart or keyboard diagram. The teacher then explains what a key signature is, its purpose, and shows examples on the board.
Pupils’ Activity: Pupils listen attentively, ask questions for clarification, and identify accidentals and key signatures shown by the teacher.
Learning Point: Pupils understand the meaning and function of accidentals and key signatures in music.

Step 3: Tonality and Types of Scales

Time: 8 minutes
Teaching Skill: Explanation/Questioning
Teacher’s Activity: The teacher explains the concept of tonality, distinguishing between major and minor tonality with simple examples. The teacher then introduces the general idea of a scale as a series of notes and asks pupils to mention any scales they might know.
Pupils’ Activity: Pupils listen to the explanation of tonality and respond to the teacher’s questions, mentioning any familiar scales.
Learning Point: Pupils grasp the concept of tonality and are introduced to the idea of different types of scales.

Step 4: Diatonic and Pentatonic Scales

Time: 7 minutes
Teaching Skill: Comparison/Discussion
Teacher’s Activity: The teacher defines diatonic and pentatonic scales, highlighting their main characteristics (number of notes, presence/absence of semitones). The teacher plays or shows examples of each to illustrate the difference in sound.
Pupils’ Activity: Pupils listen, observe the examples, and engage in a discussion to differentiate between the two scale types.
Learning Point: Pupils can define and distinguish between diatonic and pentatonic scales.

Step 5: Major and Minor Scales

Time: 7 minutes
Teaching Skill: Elaboration/Demonstration
Teacher’s Activity: The teacher explains major and minor scales as types of diatonic scales, outlining their characteristic whole and half-step patterns. The teacher demonstrates the construction of a simple major scale (e.g., C Major) and a natural minor scale (e.g., A Minor) on the board or keyboard.
Pupils’ Activity: Pupils observe the construction of scales and make notes, asking questions about the patterns.
Learning Point: Pupils understand the structure and characteristics of major and minor scales.

Step 6: Composing with Pentatonic Scales

Time: 8 minutes
Teaching Skill: Practical Application/Guidance
Teacher’s Activity: The teacher reminds pupils of the characteristics of the pentatonic scale and its suitability for simple melodies. The teacher provides a simple instruction (e.g., “Use notes from the C pentatonic scale to create a 4-bar melody”) and guides pupils as they attempt to compose a short melody.
Pupils’ Activity: Pupils attempt to compose a short, 4-bar melody using a pentatonic scale, applying the knowledge gained.
Learning Point: Pupils apply their knowledge of pentatonic scales to create a simple musical composition.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define accidentals and list three types.
What is a key signature and what is its purpose?
Explain the term “tonality” in music.
Differentiate between a diatonic and a pentatonic scale.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 2 minutes
Teaching Skill: Summarisation/Assignment
Teacher’s Activity: The teacher summarizes the key points of the lesson, reinforcing the importance of scales in music. The teacher assigns homework: “Write out the G Major scale and the E natural minor scale on a staff.”
Pupils’ Activity: Pupils listen to the summary and copy down the homework assignment.
Learning Point: Pupils consolidate their learning and receive further practice.

Lesson Keywords

Accidentals – Symbols (#, b, ♮) that alter the pitch of a note.
Key Signature – Sharps or flats at the start of a staff indicating the key.
Tonality – The organization of pitches around a central note (tonic).
Scale – A series of musical notes arranged in ascending or descending order.
Diatonic Scale – A seven-note scale with specific whole and half-step patterns.
Pentatonic Scale – A five-note scale, often without semitones.
Major Scale – A diatonic scale with a bright sound, following W-W-H-W-W-W-H pattern.
Minor Scale – A diatonic scale with a somber sound, with different types (natural, harmonic, melodic).

Differentiation

For pupils who grasp concepts quickly, the teacher can challenge them to identify scales in familiar songs or to compose a longer pentatonic melody. For pupils needing more support, the teacher can provide pre-drawn staves for scale construction and offer more direct guidance during the composition activity.

Note for teachers using this lesson plan

Ensure that visual aids (scale charts, keyboard diagrams) are clear and easily visible to all pupils. Encourage active participation and provide constructive feedback during the practical composition activity. Playing examples of different scales will help pupils to internalize their distinct sounds.