Reading a Triple Beam Balance
By Jill Crowder
Students identify the parts of a triple beam balance and practice measuring the mass of objects.
Chemical Bonds: The Hydrogen Bond
By Jill Larson
In this interactive object, students examine a type of chemical bond known as the "hydrogen bond."
A Typical Animal Cell (Video)
By Becky Polk-Pohlman
In this video, learners view the parts of an animal cell and its organelles.