The method of putting two or more things together is called Addition. It is denoted using the +: Plus symbol.

The addition is the first operation students learn in math. It also forms a base for multiplication. Thus concept clarity is a must while teaching addition to kids. Here is the simple progression one can follow to teach addition:

Step 1: Teach addition using pictures and objects.
To begin with, make students perform addition using blocks, toys, chocolates and objects that they like. Ask questions like: How many objects do I have in total?

Step 2: Associate objects with numbers and add.
Once students have mastered adding objects, make them start associating objects with numbers and start writing addition equations.

Step 3: Teach addition using the number line.
Once students understand the addition equation, make them add using the number line of number strips. With the help of a number line, students understand that addition requires counting forward. Eg: To complete 1+2, they need to take 2 steps forward on the number line.

Step 4: Simple word problems
Once students have understood the meaning of addition, it’s important they see its real-life application of it as well. Word problems not only raise the rigour but also are best for real-life scenario exposure. Give them, simple word problems like: I have 5 red balls, dad got 3 more red balls. How many red balls do I have in total?

Once students have mastered single digit addition, it’s a good time to introduce double-digit addition to them.
Pre-requisites: Understanding of tens and ones in a number, place value

a) Double-digit addition without regrouping (with pictures):

The first step of double-digit addition is making students understand the
concept using the place value block. When we directly move to add 2 digit numbers, students just mug up the process and do not actually understand the concept.

b) Double-digit addition without regrouping (with numbers):
Once students know to add 2 digits using the blocks, now they can move on to add numbers directly.

c) Double-digit addition with regrouping (with pictures)
Adding double-digit numbers with carrying is a complex topic and students find it difficult initially. To have a clearer understanding, use the blocks again to teach 2 digit addition first.
When students add larger numbers with blocks, they actually understand the purpose behind regrouping and carrying it to the next number on the place value.

d) Double-digit addition with regrouping (with numbers):
Once students have a good understanding of regrouping, introduce addition using numbers and carry. Explicitly mention the steps to them so that they can have a clear understanding.