invertebrates. introductory video lesson 3.1 god’s design of invertebrates objective: students...
TRANSCRIPT
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Invertebrates
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Lesson 3.1 God’s Design of Invertebrates
Objective: Students will classify animals as vertebrates or invertebrates and examine the
design of specific invertebrates.
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Review
*What is a vertebrate?*How do scientists classify
vertebrates?*Why is a snake not an
amphibian?*Why is a fish not a reptile?
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Invertebrates
An invertebrate is an animal without a backbone.
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God’s Special Design
God designed special protection for animals without backbones.
*Snails – shells to protect their soft bodies*Crabs and Ladybugs – outer skeletons to
protect their bodies*Earthworms – can burrow through the soil in
many different directions
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Jellyfish
Jellyfish have tentacles with stinging cells that allow them to catch their food.
Jellyfish do not have backbones.
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Starfish
Starfish have spiny skin and rows of tubes on their feet that help them crawl and also grip their food. If an arm is broken off it grows a new one.
Starfish do not have backbones.
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Slugs
Slugs are related to snails. They often climb trees in search of food and can descend from a tree by hanging from a thread of mucus.
Slugs do not have backbones.
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Octopus
Octopuses can change the color and texture of their skin to hide from enemies. They can squirt out a cloud of ink to help them hide.
Octopuses do not have backbones.
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Butterflies
Butterflies have antennae that help them smell and hairs on their feet that help them taste.
Butterflies do not have backbones.
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Lesson 3.2 Earthworms
Objective: Students will make predictions about earthworms, observe their behavior, and record data.
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Scientific Method Steps
1. Identify a question to answer.2. Make a hypothesis to say what you
think will happen in an experiment. 3. Plan ways to test your hypothesis.4. Conduct the experiment.5. Observe and collect data.Hypothesis: a prediction or statement
that can be tested to tell if it is true.
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Lesson 3.3 Spiders
Objective: Students will differentiate between spiders and insects. They will identify the body
parts of a spider.
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Classifying Invertebrates
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Spiders InsectsEight legsTwo body sectionsEat insectsSpin silkMake webs
Six legsThree body sectionsMost eat plantsMany have wingsHave antennae
Similarities and Differences
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Lesson 3.4 Ants
Objective: Students will identify the parts of an ant and discuss how they are uniquely
designed to do work.
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Introductory Video
The leaf cutter ant
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Did you know???
Ants are known as social insects because they live in organized communities.
A community of ants is called a colony.Each colony has a queen whose job is to lay
eggs.Most of the ants in a colony are female and
are called workers.Male ants are called drones.Ants don’t have lungs, they breathe through
small air tubes along the sides of their abdomens.
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God’s Special Design
Antennae – these are used to taste, smell, and hear.
Spiracles – These are air tubes that ants use to breathe.
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God’s Special Design
Mandibles – These jaws are used for eating, as tools for making tunnels, and as weapons.
Sting – Some ants have a sting at the end of their body. They can use this against enemies.
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Talk About It
What is another way an ant sets a good example for us to
follow?
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Lesson 3.5 Snails
Objective: Students will identify the body parts and characteristics of a snail.
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Mollusks
Mollusks are soft bodied invertebrates that usually have
shells.
Clams, snails, and scallops are mollusks.
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Snails
Shell – this protects the snail
Foot – this helps the snail move
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Snails
Eyespots – these help the snail see
Tentacles – these help the snail feel things.
Mucus – snails release this sticky liquid that helps them slide along the ground
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Lesson 3.6 Chapter 3 Review
Objective: Students will classify animals as either vertebrates or invertebrates. In a review, students will identify characteristics of earthworms, insects, spiders, and mollusks.
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What is a prediction that can be tested called?
Hypothesis
What is a large group of ants that live and work together called?
Colony
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What is an animal without a backbone called?
Invertebrate
Name an animals that loosens soil.
Earthworm
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How many legs do spiders have?
Eight
How many legs do insects have?
Six