Page 55 - vectormsint_catalogue

7.3 3
7.
7.3 Classifying animals
2. Complete the sentences with the words in the box.
1. 1. Look at the pictures and tick () the vertebrates. Then write the name of the vertebrate e
es and tick (
) the v

t the pictur

ook a

L
er
t
ebr
es. Then writ
er
e the name of the v
a
ebr
t
a
t
t
or invertebrate group the animal in the picture belongs to, as in the example.
or in v er t ebr a t e gr oup the animal in the pictur e belongs t o , as in the e x ample . vertebrates invertebrates jellyfish muscles skin mammals fish
a. Birds and reptiles are .
b. have fur and give birth to young. Science 1, Workbook
A 4 B c. Amphibians breathe with their lungs and through their .
fi sh d. Arthropods and jellyfish are . Lower Secondary
e. Molluscs have soft bodies with strong .
f. breathe with their gills.
C D g. have long tentacles.
3. Describe how amphibians and reptiles are different, but also how they are similar.
E F
G H
4. Describe how molluscs and jellyfish are different, but also how they are similar.
I J
5. A spider is not an insect. Why?
K L
70 71

7.3
7. 3 Clas sifying animals 7. 3 Classifying animals
sifying animals
7.3
Classifying animals
Clas
• Explain to Ss that in picture I, we can see an example of a Explore Science Overview
latworm. Investigating animal classification
• Explain to Ss that latworms have soft lat bodies which are • Draw Ss’ attention to the Explore Science section. • Draw Ss’ attention to the box with the Overview section.
not segmented. • Have a S read aloud the points at the end of the lesson.
• Focus Ss’ attention on picture J. • Explain to Ss that they have to choose one group of animals out • Encourage Ss to express their opinions, and initiate a short
of the mammals, reptiles, birds, ish, amphibians, molluscs and
• Explain to Ss that in picture J, we can see an example of a arthropods, and describe two animals that belong to this group. discussion in class about what they have learnt in this
nematode. lesson using as many keywords of the lesson as possible.
• Explain to Ss that nematodes are worms with soft thin Safety rules
bodies that are not segmented. > Ss should be careful when using the Internet. Not all search MORE PRACTICE
• Focus Ss’ attention on picture K. engines and web pages are safe for children. For lower-performing Ss:
• Explain to Ss that in picture K, we can see an example of an • Have a S read aloud the steps of the Explore Science section. • Provide Ss with the WS a More Practice.
echinoderm. Science 1, Teacher’s Book Science 1, Teacher’s Book • Be aware that each group of animals should be chosen by at • Explain to Ss that they have to look at the pictures, read the
• Explain to Ss that echinoderms live in water and their body least one S. text and answer the questions. Science 1, Teacher’s Book Science 1, Teacher’s Book
is hard on the outside and covered with spines. • Ask Ss What characteristics did you search for? (Accept all
• Focus Ss’ attention on picture L. reasonable answers. Suggested answer: We looked for the • You can also ask Ss What do bats and pigeons have in
. The
y both br
common
eathe with their
common? (They can both ly. They both breathe with their
common
?
an both ly
y c
The
(
?
• Explain to Ss that in picture L, we can see an example of an characteristics of the body of the organisms and in which lungs, and they are both vertebrates because they have an
arthropod. environment they live. We irst searched if the organisms had inner skeleton.).
• Explain to Ss that arthropods are animals with segmented an inner skeleton to know if they were vertebrates or not. We • Encourage Ss to express their opinions, and initiate a short
bodies and joints in their legs. also searched for their way of reproduction and how they discussion in class.
• Point out to Ss that arthropods are further divided into breathe.). • Give Ss some time to do the activity.
arachnids which have eight legs and insects which have six • Point out to Ss that inally they have to make a presentation 1. a. A pigeon is a bird because it has feathers and it lays
legs, antennae and might also have wings. of their indings and discuss them with the class. hard-shelled eggs.
• Be aware that at this point of the lesson there is an • Give Ss some time to do the activity. b. A bat is a mammal because it gives birth to young
opportunity for you to recognise and then resolve any Accept all reasonable answers. Suggested answer: which feed on milk, and it has fur on its body.
di iculty that some Ss may have telling the di ference Vertebrate animals that belong to the group of mammals
between insects and arachnids. could be zebras or lions. Vertebrate animals that belong For higher-performing Ss:
• Have a S read aloud each paragraph of the theory section to the group of reptiles could be snakes or turtles. • Provide Ss with the RS Classifying arthropods.
Invertebrates Invertebrates. Vertebrate animals that belong to the group of birds could • Provide Ss with scissors.
• Focus Ss’ attention on picture M. be penguins or swallows. Vertebrate animals that belong • Divide Ss into pairs.
• Draw Ss’ attention to the theory section Invertebrates. to the group of ish could be salmon or sharks. Vertebrate • Explain to Ss that the cards all show arthropods.
• Explain to Ss that invertebrates belong to the animal • Explain to Ss that in picture M, we can see an octopus. animals that belong to the group of amphibians could be
?
?
(An
In which group would you classify an octopus
In which group would you classify an octopus
kingdom and that they do not have an inner skeleton or • Ask Ss In which group would you classify an octopus? (An toads or salamanders. • Point out to Ss that arthropods are divided into insects and
arachnids.
backbone. octopus is an invertebrate because it has no backbone Invertebrate animals that belong to the group of molluscs • Remind Ss that insects have six legs, antennae and might
or inner skeleton. Its body is soft but with strong muscles
• Point out to Ss that there are seven groups of invertebrates therefore it belongs to the group of molluscs.). could be squid or scallops. Invertebrate animals that belong have wings, while arachnids have eight legs and do not
described in this lesson. to the group of arthropods could be spiders or ants. have antennae.
• Focus Ss’ attention on picture F. • You can also ask Ss In which group would you classify an
ant? (An ant is an invertebrate because it has no backbone.
?
ant
?
ant
ebr
t
er
ause it has no backbone.
e bec
at
(An ant is an in
v
• Explain to Ss that in picture F, we can see an example of a Its body is segmented and it has legs with joints. It therefore • Instruct Ss to cut out the cards from the RS Classifying
arthropods.
mollusc. belongs to the group of arthropods.), What are the Keywords
• Explain to Ss that a mollusc has a soft body with strong similarities and di ferences between a spider and a bee? (A Safety rules
muscles and (sometimes) a protective shell. spider and a bee are both invertebrates because they have • Draw Ss’ attention to the box with the keywords of the lesson > Ss should be careful when using scissors.
• Focus Ss’ attention on picture G. no backbone and they belong to the invertebrate group and read them aloud. • Have each S in the pair take half the cards and make a pile
• Explain to Ss that in picture G, we can see an example of a of arthropods because they have segmented bodies and • Ask Ss questions such as In which group of the animal with the cards face down.
jelly ish. legs with joints. A spider has eight legs and no antennae kingdom do molluscs and jelly ish belong? (Molluscs and • Explain to Ss that one S in each pair has to take one card
• Explain to Ss that jelly ish live in water. They have soft and therefore it is an arachnid, while a bee has six legs, jelly ish are both invertebrates.), Which animals have long from the pile and show the arthropod to the other S, who
tentacles with stinging cells? (Jelly ish have long tentacles
tentacles with stinging cells
bodies with long tentacles with stinging cells. antennae and wings and it belongs to the group of insects.), tentacles with stinging cells ? ? ( Jelly ish ha v e long t entacle s has to say if the arthropod is an insect or an arachnid.
• Focus Ss’ attention on picture H. Which invertebrates have tentacles with stinging cells? with stinging cells.), What are annelids, latworms and • Explain to Ss that if they guess correctly, they can keep the
nematodes
nematodes? (They are di ferent groups of worms.), In which
• Explain to Ss that in picture H, we can see an example of an (Jelly ish are invertebrates which have tentacles with nematodes ? ? ( The y ar e di f er ent gr oups of w or ms .), card. The S with more cards wins.
group is a star ish classi ied? (A star ish is an echinoderm.),
group is a star ish classi ied?
annelid. stinging cells.). group is a star ish classi ied? (A s tar ish is an echinoder m.), • Give Ss some time to do the activity.
What is the di ference between an arthropod and an
• Explain to Ss that annelids are worms with soft segmented • Allow Ss some time to think about their answers. arachnid? (An ar achnid is a t ype of ar thr opod. Ar thr opods ar e Insects: mosquito, ladybird, cockchafer, wasp, bee, stink
arachnid? (An arachnid is a type of arthropod. Arthropods are
arachnid?
bodies. • Encourage Ss to express their opinions, and initiate a short a group of invertebrate animals with segmented bodies and bug, ant, cockroach
• Focus Ss’ attention on picture I. discussion in class. legs with joints.). Arachnids: scorpion, spider, tick, mite
• Don’t correct Ss’ answers at this stage of the lesson.
• Have Ss turn to the Glossary and read the de initions and/or the Don’t forget to prepare the materials
and resources for the next lesson.
examples of the keywords of the lesson to check their answers.
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