Go to http://www.thinkcentral.com
Click on the green "Science and Health" tab on the left.
Click on the second box "HSP Science".
This brings you to the Welcome Window.

1. Select your State.
2. Select your District.
3. Select you School.
4. Username: science5 (no caps).
5. Password: science (no caps).
6. Click the Login button.
7. Click on "My Library,"
and then the link to the science ebook below the yellow star.