DEMONSTRATION
TEACHING
(Science 8)
ARCELY A. AVILES
Statement 1
Species is the basic unit of
classification of an organism.
Statement 2
 Species names consist of two
words; the first word indicates
to which organism belongs and
the second word specifies the
specific term of the species.
Statement 3
The scientific name of papaya
is correctly written as Carica
papaya.
Statement 4
The scientific name of milkfish
or bangus is correctly written as
chanos chanos.
Statement 5
Dogs, rice plants, and humans
are examples of species.
“The Old Lady”
 G: There was on old woman who swallowed a fly!
 B: Oh my, swallowed a fly!
 A poor old woman, I think she’ll die!
 G: There was an old woman who swallowed a bird!
 B: Swallowed a bird? How absurd to swallow bird!
 G: She swallowed the bird to catch the fly.
 B: Oh my, swallowed a fly!
 A poor old woman, I think she’ll die!
 G: There was an old woman who swallowed a cat.
 B: Swallowed a cat?
 G: She swallowed a cat to catch the bird.
 She swallowed a bird to catch the fly.
 B: Oh my, swallowed a fly?
 A poor old woman I think she’ll die!
 G: There was an old woman who swallowed a dog.
 B: Swallowed a dog? I can’t imagine how she
 swallowed the dog!
 G: She swallowed a dog to catch the cat.
 She swallowed cat to catch the bird.
 She swallowed the bird to catch the fly.
 B: Oh my, swallowed a fly?
 A poor old woman, I think she’ll die!
 G: There was old woman who swallowed a cow!
 B: Swallowed a cow? That’s the most hilarious
 thing I’ve ever heard!
 G: She swallowed a cow to catch the dog.
 She swallowed a dog to catch the cat.
 She swallowed a cat to catch the bird.
 She swallowed a bird to catch the fly.
 B: Oh my, swallowed a fly?
 A poor old woman, I think she’ll die!
 G: There was an old woman who swallowed a
 horse.
 Of course, she died!
GUIDE QUESTIONS:
What is this illustration all about?
How do you identify the
Components of a Food Chain in an
ecosystem?
Monfort Bat Cave
The Island of Samal, part of Davao del NorteProvince, is off the coast of Mindanao. In this
island is the Monfort Bat Cave which is approximately 245 feet (75 meters) long and has five
entrances. Bats cover75 percent of its ceilings and walls. An estimated 1.8million bats, the
largest known population of Geoffroy’s rousette fruit bats in the world, are
overloading Monfort Bat Cave on the Philippines’ Samal Island.
Geoffroy’s rousette fruit bats feed on fruit and nectar. Their role as pollinators and
seed dispersers is essential in sustaining Philippine forests, including such important
commercial fruits as durian. Each bat consumes 1½ to 3 times its body weight nightly in
fruit and nectar. This colony could consume 550 tons (500,000 kilograms) of nectar
from durian and other trees, pollinating an incredible number of flowers. Worldwide, cave-
dwelling bats are in alarming decline due to human disturbance and destruction of
their cave roosts. In some areas, including Samal Island, are captured and eaten by humans.
Colonies like the one in Monfort Bat Cave are now rare and in urgent need of
protection. Their loss would endanger the health of forests and human economies. The
bat’s colony should be able to survive natural predators – crows, rats, 10-foot (3-meter)
pythons and occasional monitor lizards – just as bat populations do elsewhere. Untamed
dogs and cats, however, also seem to do bat hunting at Monfort Bat Cave.
© Bat Conservation International, www.batcon.org.Used with permission
What are the organisms found in the
surrounding area of Monfort Bat Cave? List
them down in the table.
Table 1: Organisms found in Monfort Bat Cave
ANIMALS PLANTS
1. 1.
2. 2.
3. 3.
FOOD CHAIN
 refers to the order of events in an
ecosystem, where one living
organism eats another organism,
and later that organism is
consumed by another larger
FOOD CHAIN (Figure 1)
The main source of energy in a
community is the SUN as shown in
Figure1.
 Plants use sunlight, with carbon
dioxide and water, to make food
through the process of photosynthesis.
Plants can manufacture and
produce their own food, hence
they are called PRODUCERS.
Animals depend on plants because
they cannot produce their own
food that’s why they are called
CONSUMERS.
Organism that feeds directly on the
producers is called the FIRST-ORDER
CONSUMER.
Organism that eats the first-order consumer
is referred to as the SECOND-ORDER
CONSUMER.
 Organism that eats the second-order
consumer are the THIRD-ORDER CONSUMER
and so on.
ORGANISMS CAN ALSO BE CLASSIFIED
ACCORDING TO THE TYPE OF FOOD THEY EAT:
 HERBIVORE -Those that feed solely on plants, vegetables
and fruits.
 CARNIVORES- those that feed on other animals
 OMNIVORES - Some feed on both plants and animals.
 DECOMPOSERS - organisms feed on dead plants and
animals, and the smaller pieces of organic matter provided
by scavengers.
 SCAVENGERS - organisms that feed on dead, decaying flesh
of an animal, dead plant materials, or refuse, to break
down their organic materials into smaller pieces.
GUIDE QUESTIONS:
1.What kind of organisms are producer?
2.What kind of organisms are usually
the 1st order consumer?
3. How about the 2nd and 3rd order
consumer? What kind of organisms are
they?
GUIDE QUESTIONS:
4. If an organism dies, what organisms
are responsible for decomposition of it?
Can you include them in the food
chain?
5. How come that decomposer forms
the final link in the food chain
ESSENTIAL QUESTIONS:
1.Describe how energy is being
transferred and how it is important.
2.What is the impact of human activities
in the transfer of energy and in
maintaining the balance in the
ecosystem?
3.What do you think will happen in a
given ecosystem if one of the organisms
extinct or became endangered?
ACTIVITY ( DIGITAL DRAWING)
RUBRICS
CRITERIA RATING
CONTENT 40%
ARTWORK 40%
VISUAL IMPACT 30%
TOTAL 100%
QUIZ
 I. CLASSIFICATION:
Directions: Categorized the organisms above if it is producer, 1st order consumer,
2nd order consumer, and decomposer.
II. Make at least 2 sets of food chains from producer to decomposer.
Producer 1st Order Consumer 2nd Order Consumer Decomposer
ASSIGNMENT:
The students will visit the different
ecosystems in their locality. Know the
different human activities and their impact on
the natural flow of energy in sustaining the
balance of the ecosystem. And write a
reflection journal about the impacts of
human activities in the ecosystems in the
locality.
THANK YOU!

2ND-DEMO-POWERPOINT.pptx

  • 1.
  • 2.
    Statement 1 Species isthe basic unit of classification of an organism.
  • 3.
    Statement 2  Speciesnames consist of two words; the first word indicates to which organism belongs and the second word specifies the specific term of the species.
  • 4.
    Statement 3 The scientificname of papaya is correctly written as Carica papaya.
  • 5.
    Statement 4 The scientificname of milkfish or bangus is correctly written as chanos chanos.
  • 6.
    Statement 5 Dogs, riceplants, and humans are examples of species.
  • 7.
  • 8.
     G: Therewas on old woman who swallowed a fly!  B: Oh my, swallowed a fly!  A poor old woman, I think she’ll die!  G: There was an old woman who swallowed a bird!  B: Swallowed a bird? How absurd to swallow bird!  G: She swallowed the bird to catch the fly.  B: Oh my, swallowed a fly!  A poor old woman, I think she’ll die!  G: There was an old woman who swallowed a cat.  B: Swallowed a cat?  G: She swallowed a cat to catch the bird.  She swallowed a bird to catch the fly.  B: Oh my, swallowed a fly?  A poor old woman I think she’ll die!
  • 9.
     G: Therewas an old woman who swallowed a dog.  B: Swallowed a dog? I can’t imagine how she  swallowed the dog!  G: She swallowed a dog to catch the cat.  She swallowed cat to catch the bird.  She swallowed the bird to catch the fly.  B: Oh my, swallowed a fly?  A poor old woman, I think she’ll die!  G: There was old woman who swallowed a cow!  B: Swallowed a cow? That’s the most hilarious  thing I’ve ever heard!  G: She swallowed a cow to catch the dog.  She swallowed a dog to catch the cat.  She swallowed a cat to catch the bird.  She swallowed a bird to catch the fly.  B: Oh my, swallowed a fly?  A poor old woman, I think she’ll die!  G: There was an old woman who swallowed a  horse.  Of course, she died!
  • 11.
    GUIDE QUESTIONS: What isthis illustration all about? How do you identify the Components of a Food Chain in an ecosystem?
  • 12.
    Monfort Bat Cave TheIsland of Samal, part of Davao del NorteProvince, is off the coast of Mindanao. In this island is the Monfort Bat Cave which is approximately 245 feet (75 meters) long and has five entrances. Bats cover75 percent of its ceilings and walls. An estimated 1.8million bats, the largest known population of Geoffroy’s rousette fruit bats in the world, are overloading Monfort Bat Cave on the Philippines’ Samal Island. Geoffroy’s rousette fruit bats feed on fruit and nectar. Their role as pollinators and seed dispersers is essential in sustaining Philippine forests, including such important commercial fruits as durian. Each bat consumes 1½ to 3 times its body weight nightly in fruit and nectar. This colony could consume 550 tons (500,000 kilograms) of nectar from durian and other trees, pollinating an incredible number of flowers. Worldwide, cave- dwelling bats are in alarming decline due to human disturbance and destruction of their cave roosts. In some areas, including Samal Island, are captured and eaten by humans. Colonies like the one in Monfort Bat Cave are now rare and in urgent need of protection. Their loss would endanger the health of forests and human economies. The bat’s colony should be able to survive natural predators – crows, rats, 10-foot (3-meter) pythons and occasional monitor lizards – just as bat populations do elsewhere. Untamed dogs and cats, however, also seem to do bat hunting at Monfort Bat Cave. © Bat Conservation International, www.batcon.org.Used with permission
  • 13.
    What are theorganisms found in the surrounding area of Monfort Bat Cave? List them down in the table. Table 1: Organisms found in Monfort Bat Cave ANIMALS PLANTS 1. 1. 2. 2. 3. 3.
  • 14.
    FOOD CHAIN  refersto the order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed by another larger
  • 15.
  • 16.
    The main sourceof energy in a community is the SUN as shown in Figure1.  Plants use sunlight, with carbon dioxide and water, to make food through the process of photosynthesis.
  • 17.
    Plants can manufactureand produce their own food, hence they are called PRODUCERS. Animals depend on plants because they cannot produce their own food that’s why they are called CONSUMERS.
  • 18.
    Organism that feedsdirectly on the producers is called the FIRST-ORDER CONSUMER. Organism that eats the first-order consumer is referred to as the SECOND-ORDER CONSUMER.  Organism that eats the second-order consumer are the THIRD-ORDER CONSUMER and so on.
  • 21.
    ORGANISMS CAN ALSOBE CLASSIFIED ACCORDING TO THE TYPE OF FOOD THEY EAT:  HERBIVORE -Those that feed solely on plants, vegetables and fruits.  CARNIVORES- those that feed on other animals  OMNIVORES - Some feed on both plants and animals.  DECOMPOSERS - organisms feed on dead plants and animals, and the smaller pieces of organic matter provided by scavengers.  SCAVENGERS - organisms that feed on dead, decaying flesh of an animal, dead plant materials, or refuse, to break down their organic materials into smaller pieces.
  • 23.
    GUIDE QUESTIONS: 1.What kindof organisms are producer? 2.What kind of organisms are usually the 1st order consumer? 3. How about the 2nd and 3rd order consumer? What kind of organisms are they?
  • 24.
    GUIDE QUESTIONS: 4. Ifan organism dies, what organisms are responsible for decomposition of it? Can you include them in the food chain? 5. How come that decomposer forms the final link in the food chain
  • 25.
    ESSENTIAL QUESTIONS: 1.Describe howenergy is being transferred and how it is important. 2.What is the impact of human activities in the transfer of energy and in maintaining the balance in the ecosystem? 3.What do you think will happen in a given ecosystem if one of the organisms extinct or became endangered?
  • 26.
    ACTIVITY ( DIGITALDRAWING) RUBRICS CRITERIA RATING CONTENT 40% ARTWORK 40% VISUAL IMPACT 30% TOTAL 100%
  • 27.
    QUIZ  I. CLASSIFICATION: Directions:Categorized the organisms above if it is producer, 1st order consumer, 2nd order consumer, and decomposer. II. Make at least 2 sets of food chains from producer to decomposer. Producer 1st Order Consumer 2nd Order Consumer Decomposer
  • 28.
    ASSIGNMENT: The students willvisit the different ecosystems in their locality. Know the different human activities and their impact on the natural flow of energy in sustaining the balance of the ecosystem. And write a reflection journal about the impacts of human activities in the ecosystems in the locality.
  • 29.