1.2 Explore your environment

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

1.2 Explore your environment

Instruction microscope

Instuction biological drawing

Classifying organisms 

Work independently

Homework:  1.2

Next lesson: pencils, ruler and eraser!

Learning objectives

You can explain what an organism is.

You can view organisms with a magnifying glass and a microscope.

You can name characteristics of organisms.

You can make a clear drawing.

You can look up the name of an organism.

enlarge

magnifying glass = allows you to enlarge small things about 10 times

microscope = instrument which you can use to view very small things, which you cannot see with the naked eye or with a magnifying glass.

What part of the microscope do you use to look through?

1. field lens adjustment
2. objective
3. eyepiece lens
4. revolving nosepiece

revolving nosepiece

objective

eyepiece lens

tube

turning to another enlarging lens

holds the eyepiece lens

enlarges 10 times

lens that enlarges 4x, 10x and 40x

What is the function of the field lens adjustment?

1. enlarging the specimen
2. adjust the amount of light
3. to hold on to the microscope
4. turn the microscope on/off

Focus

1. Turn the table down (with the large adjusting screw)
   
2. Choose smallest lens (10 X 4)
   
3. Clamp the specimen to the table
   
4. Turn table up
   
5. Look through the eyepiece and turn the large screw until the image is sharp
   
6. Focusing with the center lens (yellow) (10 x 10 = 100)
   
7. Look through the eyepiece and turn the small screw until the image is sharp

Drawing

Always draw and write with a pencil.

Make big drawings.

Use all the space you have for the drawing.

Leave space to the right of the drawing.

Make a sketch first.

Then make the lines thicker.

Draw a line to the right and add the name of the part.

Write the name of the drawing above it.

Write down the name of the magnification if you used a loupe or microscope.

True-to-nature

Shadow, colour, details

Schematic

only the mosti importand parts, no sketching, no colour

This image is..

1. True to nature
2. Schematic

This image is

1. True to nature
2. schematic

This is a longitudal section of a banana

1. True
2. Not true

This is a ... section

1. longitudal
2. cross

Classifying based on characteristics

Identifying plants with a key

Assignments

What? Make 1.2

How? Independent.

Staff? Try it alone first. If you can't figure it out, you can discuss in a whisper. If you can't work it out, raise your hand.

Time? Until 5 minutes before the end of the lesson.

Finished? Ask the teacher to put the marking sheet in it's learning.

Yield? You have (partly) done your homework!