In addition to the asthetics, you'll want to consider the format the art is provided in. Raster, or pixelized images do not give as good of quality in print projects as vector, or eps images. If you want to change the colors to match your school colors, and if the images are going to appear large (on a banner or sign), be sure to look for vector eps images. You will need some type of vector based illustration program to change the colors. Coreldraw and Illustrator are the two most commonly used programs. If you don't have one of these programs, check with the Web site provider of the clipart. In many cases, they are glad to make color modifications on your behalf for a modest fee.
Most of us use Microsoft Word to create texts but we are never aware that they could be spruced up easily with free borders that could be printed or with borders that Clipart of MS Word itself offers. You should considerable time trying the various types of images and borders available with Clipart in your Word application and also the thousands of borders available through Office Online. All these offline and online borders are absolutely free. Many other websites also offer free borders that you could download or print easily. These borders are highly useful in Word as well as in PowerPoint. The use of borders to highlight certain sections makes a long document readable, pleasing to the eye and relieving the monotony.
Science is perhaps the most difficult subject to teach in the home school. Parents may feel they lack the resources to provide an effective science curriculum at home. Many science, including biological and botanical sciences, can be effectively taught with clipart images of animals. Search libraries and clipart galleries for illustrations of plants, trees, and animals. You may look for both full-color and black and white images.