IGCSE Year 7 Biology : Using Microscopes

Biology Using Microscopes

1. Using microscopes
•LO: To name the parts of a microscope and describe their
functions.
Starter: Thinking ideas (TW) What do these have in
common?
Why do we care about seeing little
things?
What do you think this is?

2. Using microscopes
•LO: To name the parts of a microscope and describe their
functions.
What do these images show?
6 day old embryo implanting in
the lining of the uterus
Taste BudHair –with a ‘split end
Inside lining of the lung

3. Learning outcomes (activity 1)
Low
•Statewhat we use a microscope for.
•Labelthe parts of the microscope.
Mid
•Describethe function of the following on a microscope:
Objective lens, eyepiece, stage, clips and focusing wheel
High
•Indicatehow the invention of the microscope affected
scientific theories
GCSE
•Explainwhat Robert Hooke is best known for in the field of
physics.
Key Words -Focus, magnify, microscope, stage, objective lens,
eyepiece, focussing wheel

4. History of the microscope
•LO: To name the parts of a microscope and describe their
functions.

5. Parts of a microscope
•LO: To name the parts of a microscope and describe their
functions.
Stage
Focussing wheel
Base
Eyepiece
Objective lens
Slide
Mirror
Arm

6. Parts of a microscope
•LO: To name the parts of a microscope and describe their
functions.
Stage
Focussing wheel
Base
Eyepiece
Objective lens
Slide
Mirror
Arm

7. Microscopes review
Low
•Labelthe parts of the microscope.
Mid
•Describethe function of the
following on a microscope:
Objective lens, eyepiece and
focusing wheel
High
•Indicatehow the invention of the
microscope affected scientific
theories
GCSE
•Explainwhat Robert Hooke is best
known for in the field of physics.
Key Words -Focus, magnify,
microscope, stage, objective lens,
eyepiece, focussing wheel
What do we use microscopes for
Label the Microscope
When was Robert Hooke born? Died?
How did the fact that Hooke studied
three areas of science help with the
invention of the microscope?
What was special about the book that
Hooke produced?
Why did Hooke choose the word cell
for the small units he saw when he
looked at plant material with his
microscope?
Describe the function of the
following:
Objective lens
Eyepiece
Focussing wheel
Robert Hooke was an astronomer and
physicist. Explain what is studied in
each of these areas of science.

8. Learning outcomes (activity 2)
Low
•Writea brief method to describe how to correctly use a
microscope
Mid
•Drawcells viewed under a microscope in the correct
scientific way
High
•Describehow to calculate the magnification of microscope.
GCSE
•Calculatethe real size of organism under a microscope
Key Words –Total magnification, objective lens, eyepiece, magnify,
stage, focusing wheel

9. Drawing cells under a microscope
•LO: To name the parts of a microscope and describe their
functions.
Human Cheek Cell
Magnification x 400
Use a sharp pencil
Don’t colour/shade in any
parts of the drawing
Give your drawing a heading
Draw the specimen in a
rectangle not a circle
Calculate the total
magnification and write it on
your drawing

10. Calculating magnification
•LO: To name the parts of a microscope and describe their
functions.
Total
magnification
Objective lens
magnification
Eyepiece lens
magnification

11. How to use a microscope
Low
•Writea brief method to describe
how to correctly use a microscope
Mid
•Drawcells viewed under a
microscope in the correct scientific
way
High
•Describehow to calculate the
magnification of microscope
GCSE
•Calculatethe real size of organism
under a microscope
Key Words -Total magnification,
objective lens, eyepiece, magnify, stage,
focusing wheel
Write a brief method on how to
correctly use a microscope
Drawing cells
Use a sharp pencil
Don’t colour/shade in any parts of the
drawing
Give your drawing a heading
Draw the specimen in a rectangle not a
circle
Objective
lens
magnification
Eyepiece
lens
magnification
Total
magnification
X25 X10
X100 X20
X125 X5

12. Learning outcomes (activity 3)
Low
•Orderpictures to show the correct procedure for creating a
microscope slide
Mid
•Writea detailed method on how to create a microscope slide
using the correct terminology.
High
•Demonstratethe correct procedure in creating a microscope
slide for study.
GCSE
•Explainwhy dyes are used to stain slides of animal and plant
cells
Key Words –Slide, cover slip, pipette, forceps, microscope

13. How to prepare a slide -demo
•LO: To name the parts of a microscope and describe their
functions.
Drop of water
Optional stain
Forceps to peel
off a small piece
of material
Thin sample required
Use mounted needle
Place over drop of H
2O
Place cover slip over
(no bubbles)

14. How to prepare a slide
Low
•Prepare a slide of a plant cell
without the use of a cover slip
Mid
•Prepare a slide of a plant cell using
a cover slip –some air bubbles
visible.
High
•Prepare a stained slide of a plant
cell without any air bubbles
beneath the coverslip
GCSE
•Explainwhy dyes are used to stain
slides of animal and plant cells
Key Words -Slide, cover slip, pipette,
forceps, microscope
Prepare a slide of a plant cell.
Correctly demonstrate the use of
key equipment available.
Do not produce any air bubbles
beneath the cover slip
Use blotting paper to remove any
excess water or stain

15. Leaning outcomes
To name the parts of a microscope and describe their functions.
1.Which outcome are
you most confident
with?
2.What Band do you
believe you
confidently achieved
today?
3.What outcome would
you like to improve
your knowledge on?
Low
•Labelthe parts of the microscope.
•Writea brief method to describe how to
correctly use a microscope
Mid
•Describethe function of the following on a
microscope: Objective lens, eyepiece, stage,
clips and focusing wheel
•Drawcells viewed under a microscope in the
correct scientific way
High
•Describehow to calculate the magnification
of microscope.
•Demonstratethe correct procedure in
creating a microscope slide for study.
GCSE
•Calculatethe real size of organism under a
microscope

16. Plenary
•LO: To name the parts of a microscope and describe their
functions.
Stage
Focussing wheel
Base
Eyepiece
Objective lens
Slide
Mirror
Arm

17. Plenary –odd one out
•LO: To name the parts of a microscope and describe their
functions.

18. 7AB(2)W 7AB(2)W