Давайте преобразуем предложения, которые вы предоставили, в полные фразы. Я постараюсь сделать их более связными и понятными.
To live in peace: Living in peace is essential for a happy community.
Decide what the children should do: It is important to decide what the children should do during their free time to foster their creativity.
Help the children prevent / resolve conflict: As adults, we should help the children prevent or resolve conflicts that may arise during playtime.
Decide what the problem is: Before we can find a solution, we need to decide what the problem is.
Suggest an idea: I would like to suggest an idea for the school project that could involve everyone.
Discuss: We should discuss the plans for the upcoming event to ensure that everyone is on the same page.
Choose: It’s important to choose friends who respect and support you.
Put into action: Once we have a plan, we need to put it into action to see the results.
Make a fuss about something: We shouldn’t make a fuss about something trivial; instead, we should focus on what truly matters.
On the one hand... on the other hand: On the one hand, we have the opportunity to go on a trip, but on the other hand, we need to finish our assignments first.
They can't do without: Children can't do without guidance and support from their parents to help them grow.
Если у вас есть конкретные запросы по каждому пункту или дополнительные задачи, дайте знать!