Hi Susan,
As atw says, you can, if you wish, enable the exercise and journal modules via Administration > Modules > Activities > Manage activities. The reason why they are disabled by default in Moodle 1.9 is because they are no longer supported, so may not work reliably any more. For more information, please see the exercise and journal module forums in Using Moodle.
Lounge
Moodle 1.9
Dyskusyjŏ ôstała zaszperowanŏ, tōż niy możesz już ôdpedzieć.