desarrollar programas para la enseñanza del idioma

I am trying to develop programs for language teaching.

In this sentence, the verb 'Estoy tratando' means 'I am trying' and it expresses an ongoing effort or action taken by the speaker to develop programs for teaching languages.

Developing programs for language instruction is part of my job.

In this case, the verb 'Desarrollar' in present tense indicates a regular or recurring action of the speaker which corresponds to part of his job. It translates to 'developing' in English.

Can you develop programs for language teaching?

This phrase is a question expecting 'yes' or 'no' as a response. '¿Puedes' translates to 'Can you' in English and it is used to ask if the person is capable of developing programs for teaching languages.