Class: Senior Secondary School 2 (SS2 / SSS2)
Term: First Term
Week: 4
Age: 16 years
Duration: 45 minutes
Subject: Music
Curriculum Theme: Music Theory
Previous Lesson: Harmony and Cadences: Meaning, Roots and Basic Rules.
Topic: Transposition Music writing.
Subject Matter: Meaning of transposition (moving a melody to a new key while keeping the same intervals), transposing a melody to its dominant key (changing key signature, maintaining pitch relationships).

Specific Objectives

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

Cognitive Domain:

Define transposition in music.
Explain what a dominant key is and how it relates to the original key.

Affective Domain:

Appreciate the importance of transposition for musical performance and arrangement.
Show interest in learning different key relationships.

Psychomotor Domain:

Transpose a short given melody to its dominant key on manuscript paper.
Identify and adjust key signatures and accidentals during transposition.

Collaborate with peers to identify the dominant key of various musical excerpts.
Participate actively in classroom discussions about transposition.

Reference Materials

The following resources were used in planning this lesson:

Senior Secondary Schools Education Curriculum
State Unified Scheme of Work
New System Music for Senior Secondary Schools, Book 2

Instructional Materials

The teacher will teach this lesson with the aid of:

Keyboard
Manuscript paper
Staff board
Sample melody written on a chart

Rationale for the Lesson

This lesson helps pupils understand how to adapt musical pieces for different instruments or vocal ranges. Learning transposition enables pupils to perform and arrange music in various keys, which is a fundamental skill for musicians.

Prerequisite/Previous Knowledge

Pupils have prior knowledge of scales, key signatures, intervals, and basic music notation.

Lesson Content/Board Summary

Transposition in Music

Meaning of Transposition

Transposition is the process of moving a piece of music, or a section of it, from its original key to a new key. When transposing, the melodic contour and the intervals between notes remain the same, but the actual pitches of the notes change.

Dominant Key

The dominant key is the key built on the fifth degree of the original (tonic) scale. It is a very important related key in music theory. For example, if the original key is C major, its dominant key is G major.

Key relationships for major keys and their dominant keys:

The dominant key is always a perfect fifth above the tonic key.
The dominant key will have one more sharp or one less flat in its key signature compared to the original major key.

Steps to Transpose a Melody to its Dominant Key

To transpose a melody from its original key to its dominant key, follow these steps:

Identify the original key: Determine the key signature of the given melody.
Find the dominant key: Count up five scale degrees from the original tonic to find the new tonic.
Determine the new key signature: Write the key signature for the dominant key at the beginning of the staff.
Rewrite the notes: Move each note of the melody up or down by the interval required to reach the new key while maintaining the same melodic shape and intervals. For example, if transposing from C major to G major, every C becomes a G, every D becomes an A, and so on.
Adjust accidentals: Ensure that any accidentals (sharps, flats, naturals) from the original melody are adjusted to fit the new key, maintaining their function (e.g., a raised 4th scale degree in the original key will still be a raised 4th scale degree in the new key).

Teaching Methods/Instructional Techniques

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

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils, reviews the previous lesson on intervals, and then introduces the topic of transposition by asking if they know why a song might be sung in a higher or lower key.
Pupils’ Activity: Pupils respond to the teacher’s greeting and questions, sharing their thoughts on changing song keys.
Learning Point: Pupils are introduced to the concept of changing keys in music.

Step 2: Explanation of Transposition

Time: 7 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines transposition as moving a melody to a new key while keeping the same intervals, using the staff board to illustrate.
Pupils’ Activity: Pupils listen attentively and write down the definition of transposition in their notebooks.
Learning Point: Pupils understand the meaning of transposition.

Step 3: Explanation of Dominant Key

Time: 7 minutes
Teaching Skill: Concept Development
Teacher’s Activity: The teacher explains what a dominant key is, demonstrating on the keyboard and staff board that it is the 5th degree of the scale and how its key signature relates to the original key.
Pupils’ Activity: Pupils identify the dominant keys for a few given major keys and note the changes in key signatures.
Learning Point: Pupils understand the concept of a dominant key and its relationship to the tonic key.

Step 4: Demonstration of Transposition Steps

Time: 10 minutes
Teaching Skill: Demonstration
Teacher’s Activity: The teacher demonstrates step-by-step how to transpose a short melody (e.g., from C major to G major) to its dominant key on the staff board, showing how to change the key signature and adjust notes and accidentals.
Pupils’ Activity: Pupils observe the demonstration carefully, asking questions for clarification.
Learning Point: Pupils learn the practical steps involved in transposing a melody.

Step 5: Guided Practice

Time: 8 minutes
Teaching Skill: Guided Practice
Teacher’s Activity: The teacher provides a simple 4-bar melody and guides pupils through transposing it to its dominant key, assisting them with identifying notes and accidentals.
Pupils’ Activity: Pupils attempt to transpose the melody on their manuscript paper with the teacher’s guidance.
Learning Point: Pupils practice applying the transposition steps with support.

Step 6: Independent Practice

Time: 5 minutes
Teaching Skill: Independent Work
Teacher’s Activity: The teacher gives pupils a different short melody to transpose to its dominant key independently.
Pupils’ Activity: Pupils work individually to transpose the given melody on their manuscript paper.
Learning Point: Pupils develop confidence in transposing melodies independently.

Step 7: Evaluation/Review

Time: 5 minutes
Teaching Skill: Questioning/Assessment
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

What is transposition in music?
Explain what a dominant key is.
If a melody is in F major, what is its dominant key?
Mention two important steps when transposing a melody to a new key.

Pupils’ Activity: Pupils answer orally and in writing.
Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 3 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher summarizes the key points of the lesson, emphasizing the importance of transposition for musicians and assigns homework to transpose a longer melody.
Pupils’ Activity: Pupils listen to the summary and copy down the homework.
Learning Point: Pupils consolidate their understanding and are aware of further practice.

Lesson Keywords

Transposition – Moving a melody from one key to another while maintaining intervals.
Dominant Key – The key built on the fifth degree of the original scale.
Key Signature – The sharps or flats at the beginning of a staff that indicate the key.
Intervals – The distance between two notes.
Melody – A sequence of single notes that is musically satisfying.

Differentiation

For pupils who grasp the concept quickly, the teacher can provide more complex melodies for transposition or ask them to transpose to other related keys (e.g., subdominant). For pupils needing more support, the teacher can provide simpler melodies, offer one-on-one guidance, and use visual aids like color-coded notes to highlight interval relationships.

Note for teachers using this lesson plan

Ensure a clear staff board is available for demonstrations. Practice transposing various short melodies beforehand to be proficient in guiding pupils. Encourage pupils to use their knowledge of scales and key signatures to aid in transposition. Provide ample manuscript paper for practice.