Mathematics - Primary 1 - Open sentences involving subtraction

Open sentences involving subtraction

Get it on Google Play
Get it on the Apple App Store
  1. Home
  2. Comprehensive Lesson Plan and Notes
  3. Primary 1
  4. Open sentences involving subtraction

Term: 2nd Term

Week: 8

Class: Primary 1
Age: 6 years
Duration: 40 minutes (4 periods)
Date:
Subject: Mathematics
Topic: Open Sentences Involving Subtraction

SPECIFIC OBJECTIVES:

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

  • Solve open sentences involving subtraction (e.g., ? – 5 = 7).
  • Understand the concept of missing numbers in subtraction.

INSTRUCTIONAL TECHNIQUES:

  • Problem-solving approach.
  • Group discussion.
  • Interactive questioning.

INSTRUCTIONAL MATERIALS:

  • Flashcards.
  • Chalkboard and chalk.
  • Counters.

 

INSTRUCTIONAL PROCEDURES

PERIOD 1 and 2:

PRESENTATION

TEACHER’S ACTIVITY

PUPIL’S ACTIVITY

STEP 1: INTRODUCTION

- Greet pupils and introduce the topic of open sentences. - Explain that an open sentence involves a missing number (e.g., ? – 4 = 6).

- Greet the teacher. - Listen and understand the concept of open sentences.

STEP 2: EXPLANATION

- Demonstrate how to solve open sentences using subtraction (e.g., ? – 3 = 5, the missing number is 8). - Use counters for visual understanding.

- Listen carefully and watch the demonstration.

STEP 3: INTERACTIVE SESSION

- Ask pupils to solve open sentences, providing some examples like ? – 2 = 5 or 7 – ? = 4. - Walk around to assist pupils in solving.

- Solve open sentences and discuss answers in pairs.

STEP 4: NOTE TAKING

- Write examples on the board, and ask pupils to copy and solve in their notebooks. - Help them solve the sentences step by step.

- Copy and solve open sentences in their notebooks.

 

EVALUATION:

  1. Solve: ? – 3 = 7.
  2. Solve: 6 – ? = 3.

CLASSWORK:

  • Solve open sentences (e.g., 9 – ? = 5, ? – 4 = 8) in their notebooks.

CONCLUSION:

Teacher praises pupils for solving open sentences correctly and reinforces understanding.