It is nicer when you conclude the intro with a statement expressing your opinion very clearly. That helps you take the reader in your desired direction.
To conclude , it is felt that restricting the time spent on television, internet and having healthy diet will help children to increase the ability to focus , concentrate and pay attention in schools.
This is the pattern for the concluding paragraph I suggest:
It is nicer if you could construct this paragraph with this pattern below:
1. a 'conclusion' signal: In conclusion, ....etc,
2. a summary of the main points or a restatement of the thesis (in different words!)
3. a final comment, based on the information in the essayThe final comment can be:
3.1. a warning or prediction (often using the first conditional: If ..., ... will ...)
3.2. a suggestion or recommendation (often using should or must)