**Mathematics Lesson Notes JSS1 Second Term**

**SCHEME OF WORK**

**Week Two and Three: Approximation **

**Week Four and Five: Number Base**

**Week Six: Basic Operations**

**Week Seven: Review of first half term’s work and periodic test**

**Week Eight: Basic Operations Cont’d**

**Week Nine: Algebraic Processes I**

**Week Ten: Algebraic Processes II**

**Week Eleven: Revision **

**Week Twelve: Examination**

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Mathematics Lesson Note For JSS1 (SecondTerm)

# Below are the 2022 complete JSS1 Second Term Mathematics Lesson Note

**Week Two and Three: Approximation**

**INTRODUCTION:**

There are many advantages to being able to estimate quantities and distances. Estimation can prevent errors. It can show whether the answer to a problem is sensible or not. It also saves time. Common measures that can be used for estimation are Length, mass etc.

For example, you can use your hand span to estimate the width of your desk. You should know the actual length (cm) of your hand span (distance between the tip of your thumb and the tip of your small finger) by using a metre rule. To learn more, click **here**.

**Week Four and Five: Number Base**

**INTRODUCTION:**

The digits 0,1,2,3,4,5,6,7,8,9 are used to represent numbers. The Placing of the digit shows their value. For example:3 902 means **3** thousand, **9** hundred, **0 **tens, **2 **units.

3 902 = **3** × 1000 + **9** × 100 + **0** × 10 + **2** × 1

= **3** ×10^{3} + **9** × 10^{2} + **0** × 10^{1} + **2** × 10^{0}

To learn more, click **here**.

**Week Six: Basic Operations**

**INTRODUCTION:**

**Addition of Numbers**

Understanding our place value, helps us understand how addiction works. This is also useful in other basic operations like subtraction, multiplication etc.

Our place value is explained below

We have the smallest value which is a **unit** e.g. 2. To learn more, click **here**.

Week Seven: Review of first half term’s work and periodic test

This week, we would be doing a revision of all that we learned, in the first half of the term.

**Week Eight: Basic Operations Cont’d**

**INTRODUCTION:**

INTEGERS

Whole numbers, which are figures that do not have fractions or decimals, are also called integers. They can have one of two values: positive or negative.

**Positive integers**

**Negative integers****Zero**

To learn more, click **here**.

**Week Nine: Algebraic Processes I**

**INTRODUCTION:**

Open sentences

14 + □ = 17. What number in the box will make this true? You may have seen problems like this before. 14 + □ = 17 will be true if 3 goes in the box: 14 + 3 = 17 is true,

We say 14 + □ = 17 is an **open sentence**. Any value can go in the box, but usually, only one value can make an open sentence true.

To learn more, click **here**.

Week Ten: Algebraic Processes II

**INTRODUCTION:**

**Multiplying and Dividing Algebraic Terms**

- Just as 5a is a short for 5 × a, so ab is short for a × b.
- Just as 5 × 3 = 3 × 5,

so, a × b = b × a.

It is usually to write the letters in alphabetical order but would be just as correct as ab.

To learn more, click **here**.

**Week Eleven: Revision**

This week, we would be doing a revision of all that we learned during the term.

**Week Twelve: Examination**

Afterwards, we would write an examination, which would test our knowledge of what has been taught so far.