Thames & Kosmos Kids First: Biology Lab (V 2.0) handleiding
Handleiding
Je bekijkt pagina 25 van 36
23
Detectives on the Trail
D
e
t
e
c
t
i
v
e
s
o
N
T
h
E
T
i
L
Fridge detective: Who
stole the bacon?
You will need
– Slides
– Cover slips
– Pipette
– Sample containers
– Tweezers
– Water
– Various hair and fiber samples (from around
your home)
– Small resealable plastic bags
– Permanent marker (for identifying the bags
and slides)
Here’s how
1. Collect hair and fiber samples that you find
around your home and keep them in your
sample containers. Then pack a hair or thread
from the pretend suspect’s clothing in a bag as
a reference sample and label it.
2. Label the slides to match your samples. Then
use the pipette to place a drop of water in the
center of each slide.
3. Set the hairs or fibers in the water droplets,
place a cover slip on top of each, and study the
samples using the lowest-power objective
lens. Then try the lens with medium
magnification power, followed by the one with
the greatest magnification power, which will
let you see the fiber structures most clearly.
EXPERIMENT
8
Horse hair
Cat hair
Dog hair
Rabbit hair
T
Each fiber reveals its own unique
details under the microscope. Hairs from
fabric fibers are easy to tell apart.
With a little practice, you will be able
to see the difference between cotton
fibers and silk, or between the hairs of
various living things.
Human hairs
Bekijk gratis de handleiding van Thames & Kosmos Kids First: Biology Lab (V 2.0), stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Thames & Kosmos |
| Model | Kids First: Biology Lab (V 2.0) |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 24679 MB |
