1. Present simple tense: Used throughout the answer (e.g., "Saving is a crucial life skill," "It also encourages them to plan ahead") to express general truths and opinions, which is appropriate for IELTS Part 3.
2. Complex sentences: The answer uses several complex sentences with subordinate clauses, such as "When kids learn to save, they become more responsible..." and "when they finally buy something they've saved up for, it's much more rewarding." This shows good grammatical range.
3. Passive voice: "...that will benefit them in the long run" uses passive construction, which adds variety to the sentence structure.
4. Infinitive of purpose: "to teach their children the value of saving money" and "to plan ahead and resist impulse buying" use infinitives to explain reasons or purposes, which is a natural way to express ideas in spoken English.