This Powerpoint includes 20 slides about Henri Matisse's colorful patterned still lifes, portrait paintings and cut paper collages. The artwork includes easy to understand explanations of his style, along with a few questions to prompt discussion.
I use this with kindergarten and 1st grade, but it has enough depth for students up to probably 3rd or 4th grade. The file is editable for your use.
I have put the PPT file in a package with three different formats, so in case you don't have the updated Powerpoint software, you should be able to open it as a PDF version or ODP. Another option is to make sure your Powerpoint software has all the recent updates or download a free up-to-date PPT viewer here: http://www.microsoft.com/en-us/download/details.aspx?id=13.