This demonstration serves as a superb introduction to the refraction of light. Students will view a penny at the bottom of an opaque plastic cup. After moving slightly so that the penny just barely disappears from sight, water is slowly added. The penny magically reappears!
Over-arching Inquiry: Can the understanding of biodiversity help us to analyze the impact of man's actions? Learning Goal: Explain why biodiversity is important to maintaining viable ecosystems;... read more
Xylem and phloem tissues make up the "circulatory" system of a plant. The xylem tissues transport water from the roots to all of the other living tissues, while the phloem tissues transport sugars... read more
Chemists are constantly faced with the daunting task of counting large numbers of items, specifically atoms, ions, molecules and compounds. This task is made even more difficult by the fact that not... read more