My Science Site
Life Systems: Cells, Tissues, Organs
Extensive site for teachers provides some helpful resources that pertain to plant and animal cells. Includes a microscope diagram as well as plant, animal and pond labs. Also contains links to structures and mechanisms, matter and...
Sophia Learning
Sophia: Mechanical Efficiency: Lesson 3
This lesson will introduce the concept of Mechanical Efficiency and explain how to calculate it for simple machines. It is 3 of 3 in the series titled "Mechanical Efficiency."
Sophia Learning
Sophia: Mechanical Efficiency: Lesson 1
This lesson will introduce the concept of Mechanical Efficiency and explain how to calculate it for simple machines. It is 1 of 3 in the series titled "Mechanical Efficiency."
Sophia Learning
Sophia: Mechanical Efficiency: Lesson 2
This lesson will introduce the concept of Mechanical Efficiency and explain how to calculate it for simple machines. It is 2 of 3 in the series titled "Mechanical Efficiency."