Kids are very practical so it is very difficult to teach them suggestion is that first start with basis for e.g:teach them where to use that,this and wh forms.
then  make them to use that in the teaching room itself.that will be very useful
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1. first they are taught simple sentences with correct grammar.

2. then they are asked to speak and write in their words.  Then personal attention is to be given to correct their mistakes and teach them correct ones.

3. let kids write and read - various sources.  Then they learn step by step.
 A lot of grammar at one time - confuses and they will get lost.
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