As part of the much larger commercial site ScienceMaster, the Physical Science page Homework Helper contains an interactive periodic table, scientific calculator and several glossaries of related terms. The site also provides length, area, mass, and temperature equivalency converters and even a weight calculator to determine how much you would weigh if you were on the moon or one of several planets. Students from junior high on will find these and the several other tools provided very useful and fun to explore.