To understand the process of photosynthesis, follow the hydrogen, carbon, and oxygen atoms as they travel between the air, the plant, and the soil.

[Free Registration/Login Required] An informational text about water and the water cycle. A question sheet is available to help students build skills in reading comprehension.

Describes a new use for hydrogen ions (protons, of course). Shows that protons are not just old hat.

[Free Registration/Login Required] In this flipchart, students are introduced to the element nitrogen, its gaseous state, atomic structure, and how it combines with hydrogen to form ammonia.

This resource describes some of the research being done by biologists and things they are discovering, the kinds of topics that might be found in science current events.