Reference Shelf
Here are some on-line references from Holt, Reinhart and Winston:
A World Atlas - click on the names of the continents, countries and states to find out about their total area, populations, natural resources, etc. The Periodic Table of Elements (available as a pdf) Holt Researcher - an on-line reference for “American History”, “World History and Culture” and “Economy and Government”. The Census and History - “this site examines the historical context of the census, its impact on American political institutions, and what it reveals about our culture.” Evaluation Rubrics for teachers.