You can't have an engaging presentation without an artist's touch. Imagery is not only eye candy for your audience, it's another way for them to learn and understand. When you purchase through links ...

PowerPoint comes with dozens of free shapes; circles, stars and even smiley faces are only a few clicks away. If you don't find a shape you like, draw your own using the built-in free-form drawing ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...