Querying for most recent value

I am rather much of a novice when it comes to developing Access databases,
but have found myself in a situation at work where I have had to develop two
recently. I have a situation where I am trying to query the database to
determine placement types of all children in the database. A child may have
had more than one placement so I want to ensure that I am retrieving the most
recent placement type. This is my table structu

Child Table: includes caseid (primary key), last name, first name, etc.
Placement Type: includes placement id (primary key), case id, date of
placement and placement type

If say caseid 3 has had five placement types as follows:
1/1/2009 - Foster Home
3/6/2009 - Group Home
4/15/2009 - Hospital
4/20/2009 - Residential Treatment Center
9/25/2009 - Group Home

How do I create a query that will return the result:
Caseid 3 Placement Type - Group Home Date of Placement 9/25/2009