Lesson

Title: Addition

Grade: 1-a Lesson: S1-L3

Explanation: Hello students, let us learn a new topic in addition today with definitions, concepts, examples, and worksheets included.

Lesson:

Definition: Addition

Addition in the simplest form is taking two numbers and adding them together.

The symbol used to show addition is the + (plus symbol).

1

.

Explanation: Add the numbers 15 and 3, we get the sum 18.

Definition: Addend

Addends are the numbers or terms that are added together to form the sum.

2

.

Explanation: In this image, If 18 pencils are added to the collection of 2 pencils, we will get 20 pencils.

Definition: Sum

The answer we get after the process is called the sum.

3

.

Explanation: In this image, 20 is the sum of 18 and 2.

Table

Step Description A + B = C

1

Three plus One is equal to Four

3

+

1

=

4

2

Three plus Two is equal to Five

3

+

2

=

5

3

Three plus Three is equal to Six

3

+

3

=

6

4

Three plus Four is equal to Seven

3

+

4

=

7

5

Three plus Five is equal to Eight

3

+

5

=

8


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