Life and Living
The Big Picture
Introduction to Life and Living
Diversity and Classification
Ecology
Virtual Laboratory
Games and Quizzes
Somerville House Middle School Science On-line: Year Seven
Cells and Microscopes IV
Laboratory Investigation: Setting up and Using the Light Microscope.
Text reference: Section 9.3
Follow the directions of your teacher at all times.
Get a microscope from the boxes on the trolley at the front of the lab.
Note the number of the box.
Carry the microscope carefully, with one hand supporting the base, and the other the arm.
Set the microscope up on your bench. Review the
animation
if necessary
If you have one with an integrated light, plug it in carefully and switch it on.
If yours doesn't have a light, get a lamp from the red tidy box and set it up
like this
.
View the grids and letters photocopied onto OHT's that are on the front bench.
What happens to the letters when you look at them under the microscope?
What happens to the grid as you increase the magnification?
Record your observations using Word and save your document to your home directory.
Homework
Reflect in your on-line journal about what you have learned today.
Review XSIQ
(5) Magnification
(6) How to calculate magnification
(7) Field of view
(8) Magnifying your field of view
(10) Do magnification exercise (determining the size of a magnified object)
For fun try this.
Interactive microscope
For extension Try these
XSIQ (9) exercise (Calculating the diameter of the field of view)
How a magnifying lens works interactive