Children develop their intellectual and language development differently at different ages. At the age of 3 -7 years children develop their language skills differently to a 7-12 year old.
Language
Over the last fifty years several theories have tried to explain the process by which children learn to understand language. Children first learn to listen and speak, then use these and other skills to learn to read and write. “Children in this age range enjoy stories and can answer simple questions about them. He or she hears and understands nearly everything that is said (within reason) at home or at pre-school or day care.” (http://superduperinc.com/handouts/pdf/145_fine%20motor%20milestones.pdf) (03/12/13)
3-7
By the age of three a child should be able to say simple sentences. By the age of 3 -4 years a child should be able to say own name, speak 250-300 words and use sentences of five to six words. At age of 3 -4 children are talkative around people they know but can be shy around strangers. By the age of 4-5 years children should be speaking clearly using more complex sentences. By the age of 5-6 years children should be able to use descriptive language, understands conversation rules and understands part of speech. By the age of 6-7 years children may develop a stutter when stressed or under pressure so it will be harder for them to speak.
7-12
Between the ages of 7 and 12 years children’s language does not develop as much as it does in the first 7 years of the child’s life. Between the age of 7 and 12 years a child will need support in tackling the complexities of spelling, Their vocabulary will grow if adults introduce new words and new ways of using language and they should be able to Speak fluently and describe complicated happenings, they will tend to read out loud, the child should Know the different tenses and grammar.
Intellectual
The brain develops in response to stimulation and trebles in weight in the first year of life.