The Communication Pyramid provides a way to look at the development of various skills that contribute to a child’s communication skills. The skills at the bottom come first and need to be in place in order to support the development of the skills higher up. For example, a child’s listening and attention skills need to develop in order to pave the way for their understanding of spoken language.

Attention and listening
Attention and listening skills form the foundation for developing communication skills. They give your child the ability to focus on and hear everything that is going on around them. The ability to focus, maintain concentration and shift from one object or topic to another develops from birth and improves with age.
Play and interaction
Play is an important prerequisite skill for developing early communication skills. Your child learns about language, social rules, the environment and the people around them through play.
Understanding of language
Understanding or receptive language is the ability to process and understand what you hear. It includes being able to understand vocabulary, follow instructions and understand a story. It is also vital for your child to have in order to understand what people are communicating to them. Receptive language is an important stepping stone to expressive language.
Expressive language
Expressive language is the ability to use language to deliver a message. Expressive language can be talking verbally or using other forms of communication, such as signing. Initiating, requesting, questioning and giving information all require expressive language skills. Children need to know the vocabulary and find the words they want to use. They then need to put them together in a grammatically correct structured phrase or sentence.
Speech
Speech sounds are the final piece of the pyramid. They refer to your child’s ability to clearly and correctly produce sounds in words and put these together in sentences so that the listener can hear and identify what they have said.
You can check the progress of your child’s communication development using this Progress Checker: Child's Progress checker - Speech & Language UK
The information below is being used with courtesy from I CAN, the children’s communication charity, (UK Registered charity 21003) www.icancharity.org.uk
At this stage, children will start to use language in a more recognisable way. They will also become more sociable.
Children develop skills at different rates, but by 18 months, usually children will:
At this stage, children try out new things and explore the world around them more actively. They will often choose their own activities and may not always like being told what to do.
Children develop skills at different rates, but by 2 years, usually children will:
Children develop skills at different rates, but by 3 years usually children will:
Children at 3 to 4 years will usually be actively learning language and asking many questions.
Children develop skills at different rates, but by 4 years usually children will:
At this stage, they need to listen, understand more and share their ideas within the classroom. They will use their language skills to help them learn to read.
Children develop skills at different rates, but by 5 years usually children will:
Often by 5 or 6 years, children have good communication skills. They are better at using language in different ways e.g. discussing ideas or giving opinions.
Children develop skills at different rates, but beyond 5 years, usually children will: