One-on-ones: Normally held weekly, these informal meetings between the team leader and each individual team member are ideal for motivating people, catching up on progress, and ensuring that any problems are identified and dealt with promptly.
Full team meeting: These are held regularly (perhaps monthly, or alternatively, every 1 or 2 weeks) so that all team members are updated on each area or task. Team meetings are useful for identifying and addressing gaps or slippage in schedules, and for ensuring that all parts of the “big picture” come together.
Presentations: More formal affairs, presentations are often held to impart messages to key stakeholders—such as the users, project sponsor, or shareholders—to keep them informed and to maintain buy-in.