How to combine multiple PPTs into one presentation

Hello guys,

I and my friends are going to make a powerpoint presentation on the topic of electricity. We have divided the work and each one will make a ppt with 2-3 slides in it. Now how do I combine all these ppts into one powerpoint presentation.

I am using Office 2013 and i also have access to Office 2007 if needed.

Check out this link at Microsoft. Explains the easiest way.

Merge multiple presentations into one - PowerPoint

Thats for office 2003 and i want office 2013.

Thanks

I don't have 2013 but this is from 2010. Should be about the same

1. Open the presentation that you want to add a slide to.
2. In the pane that contains the Outline and Slides tabs, click Slides, and then click where you want to add a slide.
3. 
4. On the Home tab, in the Slides group, click the arrow below New Slide, and then select Reuse Slides.
5. In the Reuse Slides pane, click Open a PowerPoint File.
6. In the Browse dialog box, locate and click the presentation file that contains the slide that you want, and then click Open.

Tip In the Reuse Slides pane, PowerPoint displays thumbnails (thumbnail: A miniature representation of a picture.) of the slides from the presentation that you selected. Rest the pointer on a thumbnail to see a larger version of the slide's contents.

1. In the Reuse Slides pane, do one of the following:

• To add a single slide, click the slide.
• To add all of the slides, right click any slide, and then select Insert All Slides.

Note If you want the slide that you are adding to the destination presentation to maintain the formatting of the original presentation, select the Keep source formatting check box before you add the slide to the destination presentation.

• To add a single slide, click the slide.
• To add all of the slides, right-click any slide, and then click Insert All Slides on the shortcut menu(shortcut menu: A menu that shows a list of commands relevant to a particular item. To display a shortcut menu, right-click an item or press SHIFT+F10.).