Access Prior KnowledgeLesson 3: How do we classify invertebrates?

Opening Activity·Open Science textbook to page 18.·Open Science Workbook to page 5A to review home learning.·Open Science folder to review vocabulary words and outline for the chapter.·Open Science journal and answer the following questions:

1- Describe the various classes of vertebrates.

·Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly.·Log in to clickers using student ID number.·Be ready to review home learning when timer goes off.

·Don't forget to write your home learning in your agenda page 6A.

1 There are more vertebrates thaninvertebrates living on Earth.

Yes

No

Do you agree with the statement?

2 Mollusks are not invertebrates becausesome have an outer shell.

Yes

No

Do you agree with the statement?

3 Arthropods make up the largest animalphylum.

Yes

No

Do you agree with the statement?

4 Lobsters, spiders, and houseflies are allarthropods.

Yes

No

Do you agree with the statement?

Animals without Backbones

·Most animals do not have backbones, invertebrates, and are so small that you cannot see them.

·Giant squids are the largest invertebrates, so big they can stretch across a basketball court.

·Some other invertebrates are mollusks, worms, cnidarians, and arthropods.

First paragraphpg. 18

Animals without Backbones

Mollusks Worms

·The body of a mollusk is soft and does not have bones, but some mollusks have a hard outer shell that protects them from being eaten.

·This phylum includes snails, slugs, clams, and squids that get oxygen by using gills or absorb oxygen through their skin.

·Flatworms are very flat and thin and live in wet or damp places.

·Roundworms live in water or on land.

·The earthworm is a segmented worm, which means that its body is made of different pieces.

·Some worms are too small to see without a microscope, and others are so big the largest earthworm caught was about 7 meters (23 feet) long.

Second paragraphpg. 18

Mollusks

Third paragraphpg. 18

Worms

Cnidaria Arthropods

·Jellyfish belong to the Cnidaria phylum and hatch from eggs.

·A young jellyfish, or larva, swims for days or weeks before attaching to a new place on the ocean floor, when it does this it is called a polyp.

·As a polyp, it grows; pieces of it fall off, or bud, to form new jellyfish.

·The Arthropod phylum is the largest phylum of animals that include insects, lobsters, and spiders.

·Arthropods have legs with joints and also have bodies that are divided into separate parts.

·Different arthropods breathe in different ways.

-Lobsters have gills. -Grasshoppers have tubes that carry

air through their body. -Spiders breathe with book lungs.

·Arthropods like butterflies, moths, and houseflies have life cycles that include big changes called complete metamorphosis.

·Other arthropods, like grasshoppers, hatch from eggs and looking like adults when they hatch.

-This life cycle is called incomplete metamorphosis.

Arthropods

First paragraphpg. 20

Vertebrates Invertebrates

MatchQuest

TextQuest

Answer questions in your Science Journal

1. What is the main difference between vertebrates and invertebrates?

2. How is a birds wing like an airplane wing?

3. Compare and contrast worms and clams.

4. Why is a bird not a mammal?

·Don't forget to write your home learning in your agenda page 6A.