Most of the content on the site is displayed using the integrated content player. The screenshot below shows the player, and the list following describes the main functions and features.

This is the area where the currently selected content will display. Any instruction that doesn't relate to standard player controls will be explained within the content.
The tools on the bottom left of the player cover the main interaction functions for the player:
The buttons here control the animation - the key shows you the correct answers and the arrows button resets the animation. In some animations there may be an 'i' button which you can click to see extra information on the current content.
You can display all of the available tools by clicking the arrow next to the currently selected tool icon. The screen will show a palette of tools on each side of the player window (to allow for left- and right-handed use):

The tools are as follows (note that the colour of each tool can be set using the colour tool as described above):
When an animation is available to be run as part of the presentation you will see a set of transport controls to use. These are the same as those covered in the video content section following.
Video content runs in the player in the same way as animated content, with a slight change in presentation:

You can select between high quality and medium quality using the buttons to the left of the video. High quality will give you a better picture, but medium quality may give you a better viewing experience if you don't have a high-speed internet connection. The transport controls at the bottom left give you all the tools you need to interact with the video. The controls work as follows:
Audio content runs in the player in the same way as animated content, with a slight change in presentation:

The controls work the same as for video content and you can additionally select a sound clip to listen to from the drop-down menu. Here the image and associated sound are of an international charity worker talking about the effects of an earthquake.
The Crocodile Clips content is stored as .hcs files which can only be opened with the Crocodile Clips player. This can be downloaded for free and there is a link to do so on any page that contains Crocodile Clips content. Once you have installed the player you will be able to view the content files.
Most of the planning documents are in Microsoft Word format. You will be able to view these directly in your browser if you have the correct software installed. Otherwise, you should download the files to your local machine and open them from there in Microsoft Word (or any compatible word processor).
As with Word documents, you may well be able to view any PDF files directly in your browser. If not, download the files to your local machine and open them in Adobe Reader (available as a free download from the Adobe website if you do not already have this installed).
Some lessons also have Media Bank assets available to use. These are Harcourt assets that have been made available for you to download and use in your own presentations. If there is a media bank link, click it to see a summary of the assets available for the current lesson/item:

Clicking the 'View as presentation' link will launch the asset in the content player. To save the file to your hard drive, click on the 'save to disk' link and choose a location to save the file to. Clicking the 'save to disk' link may open the file in your browser if you have the software installed for it to do so. If that is the case then right click on the 'save to disk' link and select 'save link as...' from the pop-up menu. You can then choose where to save the file.
The New Scientist links go to articles on the newscientist.com website. There is a mix of free-to-view and pay-to-view content linked to the lessons and you will need a school subscription to be able to view any of the pay content. If you have spent more than £750 on Gateway Science you will be sent a free subscription to newscientist.com. You will see the first few paragraphs of any premium content, but won't be able to view the full article without logging in.