Explore: What is a Cell?
PART I: LET’S CHECK OUT SOME CELLS
1.
2.
3.
4.
LEARNING TARGETS:
I can observe a variety of different types
of cells.
I collect data about my observations by
creating realistic sketches of the cells I
observe.
I can compare cells from different
organisms.
I can estimate the relative size of an
onion cell using my knowledge of “field of
view”.
Agenda 03-20-12
 TO BEGIN: Copy learning targets onto a blank sheet of
paper. Head the paper with your name.
 Process and Procedures 1-6
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COLLECT MATERIALS: microscope, clear plastic ruler
READ: “Field of View” Protocol
LISTEN: For specific lab directions
COMPLETE: lab, collect accurate data
 Stop and Think #1-3 (pg. 262)
 HOMEWORK: Reflect and Connect #3 (pg. 264)
Process & Procedure #1
1. Complete the front side of the “Introduction to
Microscopes” worksheet.
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Use pages 257 to 260 to find your definitions.
Answer the review questions about the parts of the microscope.
Process & Procedure #2
2. Collect the following materials for each PAIR of
people:
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Microscope (leave the cord & cover at the back counter)
“cell” ruler
Process & Procedure #3 & 4
3. Read the “Field of View” Protocol beginning on
page 257.
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Use what you read to fill in the table on the back of your
“Introduction to Microscopes” worksheet. (#7)
Complete #9 on the back of your worksheet. Can you correctly
predict the size of these specimens?
Listen carefully and take notes on the correct procedure for
“wet mounting” a specimen. (#8)
Entry Task
 Predict the length and width of the following cells:
40X magnification
100X magnification
length = 0.9mm
length = 0.4mm
width = 0.45mm
width = 0.26mm
Process & Procedure #5 & 6
5. Create a table to collect data on the following
slides:
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Onion skin
Human cheek cells
Human blood
Plant leaf (lillium or syringa)
Bacterium (various)
Paramecium
You will be wet mounting your own samples
for the onion skin and the human cheek
cells.
CLEAN-UP
 Return prepared slides to the teacher.
 All OTHER cell samples can be thrown in the trash.
 Wash and wipe dry all coverslips and slides (BE CAREFUL!) and return to the
front.
 Wipe down ALL other equipment and return to lab stations.
 Spray and wipe down group tables (and chairs if needed).
 Make sure EVERYTHING is in the same condition it was in when you first got
it.
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All materials returned to same place
All materials cleaned and in good repair
Goggles in cabinet and Aprons hung by the door
Stop & Think
Read and answer questions 1-3 on page 262. Use IQIA
and make sure that you are supporting your ideas
with EVIDENCE.
HOMEWORK
TURN IN TODAY:
1.
Classwork Paper
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2.
Learning Targets
Cell Data Table
S&T #1-3
“Introduction to Microscopes” Worksheet
Homework:
Reflect and Connect #3 (pg. 264)