# Open Sentences (Primary 5 and Primary 6) ASEI PDSI Methods

**MATHEMATICS**

**SMASE ASEI PDSI METHOD **

**THIRD TERM/WEEK 2 (PRIMARY 6)**

**SECOND TERM/W****EEK 3 {PRIMARY 5)**

**TOPIC: OPEN SENTENCE **

**LEARNING AREA **

Division of two or three digit numbers by:

Lesson One – Open sentences involving addition and subtraction

Lesson Two – Open sentences involving multiplication and division

Lesson Three – Sentences and equation

Lesson Four – Test

**TIME** – 40 Minutes each.

**LEARNING OUTCOME **

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

1. find the missing number in open sentences.

2. use letters to represent boxes in open sentences.

3. find the missing numbers that the letters represents.

4. interpret each box in a mathematical statement represent a letter that could be found.

5. use letters to represent the missing numbers in quantitative aptitude problems and find their values.

**RATIONALE**

Open sentence is a mathematical statement that can be either true or false depending what values are used. For examples –

1. 8 is an even number is closed (it is always true)

2. 9 is an even number is closed (it is always false)

3. n is an even number is open (could be true or false, depending on the value of n).

The concept of open sentences will enable the pupils to understand and appreciate the logical statements.

**LEARNING MATERIALS **

The teacher will teach the lesson with the aid of Flash cards and charts.

**PREVIOUS KNOWLEDGE**

The pupils under the concept of addition, substation, multiplication and division.

**REFERENCE MATERIALS**

9 – Years Basic Education Curriculum

Lagos State Scheme of work

New Method Mathematics Book

All Relevant Materials

Online Materials

*Other methods Open Sentences (Primary 5 and Primary 6)*

**LESSON PLAN/DEVELOPMENT**

LESSON DEVELOPMENT 1 – OPEN SENTENCES INVOLVING ADDITION AND SUBTRACTION docx

LESSON DEVELOPMENT 2 – OPEN SENTENCES INVOLVING MULTIPLICATION AND DIVISION docx

LESSON DEVELOPMENT 3 – OPEN SENTENCES SIMPLE EQUATION docx

LESSON DEVELOPMENT 4 –Test