module will focus on five different measurable properties of water. Determining
the quality of water involves more than observing it's color and sensing
it's odor. The properties or characteristics of water in a river or lake
can be affected by man, weather, time, and animals or plants within the
Units can be
presented in any order.
The standards targeted in each module are based on the
Texas Essential Knowledge and Skills (TEKS). As a convenience,
these are included in the teacher notes to each unit.
A Note About Hyperlinks:
problem that we cannot help you with is "link rot."
As you are probably aware, links on the Internet become useless at
an alarming rate. One study that monitored educational sites for a little
over 6 months found that nearly one fifth of the Web sites that were
linked disappeared. The dot-com sites had the highest attrition rates
(40%), followed by ".edu" sites (18%) and ".org" (15%).
We emphasize ".gov" sites on the assumption that the information
there may be more reliable and that the sites may be more likely to
survive and be maintained. Even in such a case, many Web-site managers
have an unfortunate tendency to re-organize (and re-address) their Web
pages. If a site that appears to be dead is critical for your purposes, it
can pay to contact the Web-master (they usually put a link to themselves
on the home page of the site).
an extension activity, you may have students create Web-based tutorials
on a given subject. This website publishes outstanding student contributions:
Water's the Matter Homepage