Содержимое курса
Cell biology
0/1
Measure cell sizes
00:00
Breathing, excretion
0/1
The Krebs cycle.
00:00
Growth, development and motion
0/1
The mechanism of muscle fiber contraction. T-system of muscle fiber, sliding filament theory.
00:00
Biology — Genereal course


 

Lesson topicMeasure cell sizes
Learning objectives that are achieved in this lesson (link to the curriculum) 11.4.2.1 measure cell sizes using a microscrope

 

 

Lesson objectives●      Magnification

●      Cell size measurement

 

Assessment criteria
  1. Define terms: graticle / eyepiece micrometer, Arbitrary Units Stage Micrometer, image size,magnification;
  2. Explain how to measure cell size under a microscope;
  3. Calibration of Eyepiece Graticle using Stage Micrometer;
  4. Calculate total magnification when viewing a microscopic specimen.
Language goalsTerminology: graticle / eyepiece micrometer, Arbitrary Units Stage Micrometer, image size,magnification

A set of useful phrases for dialogues/writing:

 

Convert all ….to make them the ….

Perform calculations

Convert answers to units of …or ….

 

 

Instilling valuesAcademic honesty, pair skills, lifelong learning
Parenting

global citizenship

ICT Use SkillsLearning videos, view and understand ppt
Authenticity of learningKnowledge of measuring cells under a microscope can come in handy when studying at a university
Interdisciplinary communicationsCommunication with mathematics. Calculation Magnification microscope.
Prior knowledgeKnowledge of the structure of cells and the construction of a light microscope from 7th, 8th, 9th and 10th grade.
During the classes
Planned stages of the lesson, timeLesson Planned ActivitiesResources
The beginning of the

lesson

Greetings.

(W) Starter:

Demonstration micrograph cell.

When we examine an object under a microscope, what do we see?

What increases a microscope?

What are the main parts of the microscope?

After starter define, lesson topic and lesson objective.

Talking about assessment criteria.

(W) Students are introduced with the terminology of this topic.

PPT

 

 

 

 

 

 

 

 

 

 

 

 

PPT

 

https://www.youtube.com/watch?v=2s0Oq7u-M8s

 

Microscopic Measurement Notes

 

 

 

 

 

Information paper

 

Measurement WKST

 

 

 

 

 

 

 

Practical work

 

 

 

 

Mid-lesson

 

(W) Discuss with students Microscopic Measurement

(W) Invite students to watch a video and write in notebooks an algorithm for measuring cell size under a microscope

 

(I)Ask students to perform the task.

How to calculate total magnification when viewing a microscopic specimen.

 

Descriptor:

  1. Calculate total magnification.
  2. Completes the table.

Students checking each other.

(I) Suggest student reading information about measuring microscopic objects using a calibrated eyepiece micrometer

 

(I) (FA) Suggest students exercises to calculate magnification.

 

Descriptor:

1.Calculate the magnification using scale bars

2.Calculate actual size

3. Draw and label cell specimen under 40X and 100X.

 

Peer assessment

 

( I) ) (FA) Invite students to complete a practical task to determine the magnification of cell images and calibrate eyepiece micrometer

 

Descriptor:

  1. Calibrate of Eyepiece Graticule
  2. Completes the table.
  3. Measuring microscopic objects
  4. Measure cell size under a microscope

 

Teacher assessment

 

Reflection (debriefing)— I learned, learned

— it remains unclear

— above what is necessary to work

 

HomeworkStudy information material.

Be able to determine the magnification of a light microscope.

Measure cell sizes under a microscope.

 

Health and SafetyObservance of safety measures during the work in a biology office.

Observance of safety measures during the work with micropreparations. Compliance with the rules of landing at the table

 

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