Wolfram Research
Wolfram Math World: Focus
An explanation for the focus in conic sections along with diagrams. Site provides graphs, references, and a brief bibliography and citation.
SEDL
Sedl: Five Senses
Elementary students will gain great insight into the workings of our five senses through this collection of detailed, integrated lesson plans for grades K-3. Each lesson contains a list of needed materials, hands-on explorations...
Middlebury College
Middlebury College: Dostoyevsky and the Problem of God
A student-written essay entitled "Dostoyevsky and the Problem of God." Includes bibliography and references.
Sophia Learning
Sophia: Avoiding Plagiarism: Lesson 2
This lesson goes over how to avoid unintentional plagiarism. It is 2 of 4 in the series titled "Avoiding Plagiarism."