World of Invertebrates An Introduction to the World of Invertebrates

I CAN & Focus Question I CAN Statement: I CAN identify characteristics of invertebrates through an observational gallery walk. Focus Question: How can we classify invertebrate animals?

Brainstorm/Warm-up Today we will continue to learn how to classify animals. Just to get your minds going, you’ll have one minute to write down as many animals as you can think of on the index card. Ask Scholars: (after recorded answers on T Chart) What does it mean to classify? What was the criterion for grouping the animals? What is the key difference between vertebrates and invertebrates? What are the five major vertebrate groups? What are some examples of each group?

Vertebrates vs. Invertebrates *Are there more vertebrates or invertebrates in the world? *About 95% of the animals on earth are invertebrates and only 5% are vertebrates. *If there are more invertebrates in the world, why do you think we wrote down mostly vertebrates?

Invertebrate Basics! Invertebrates do not have a backbone or spine. All invertebrates are cold-blooded 6 major groups: Porifera Cnidarians (c is silent) Worms (not scientific name) Mollusks Echinoderms Arthropods.

What’s in the Invertebrate Gallery? In a moment, you will participate in a Gallery Walk for Invertebrates! There are six stations setup in the classroom (porifera, cnidarian, worms, mollusks, echinoderms, and arthropods). Each station contains pictures of various animals classified under each invertebrate group. Your Task: Is to rotate through each center, observe different invertebrates and record your observations on your chart. You will have 3 minutes at each station.

  Ask Scholars: *What were some animals that you saw in each phyla/class? *What were some observations of each phyla/class? ?

1 question you still have Closure: Exit ticket OPTIONAL STUDYJAM SCHOLARS WILL WRITE 3 things you discovered 2 interesting things 1 question you still have http://studyjams.scholastic.com/studyjams/jams/science/animals/invertebrates.htm

Copy I CAN statement and Focus Question to notebook. I CAN & Focus Question I CAN Statement: I CAN identify characteristics of invertebrate animals and classify them into six major groups. Focus Question: How can we classify invertebrate animals? SCHOLARS Copy I CAN statement and Focus Question to notebook.

(round or circular shape) Symmetry Asymmetrical (No symmetry) Radial (round or circular shape) Bilateral (even on both sides)

Poriferans Examples: Sponges No tissues or organs: simplest animals Most live in salt water attached to sand or rocks. Their bodies are full of pores and have canals which water flows through giving it nutrients and oxygen. Do not move around, stay fixed in one place: SESSILE Asymmetrical (No symmetry)

Cnidarians Examples: Corals, Hydras, Jellyfish Cold-Blooded Invertebrates More complex than sponges: tissues, a gut for digesting food, and a nervous system BUT no organs. Tentacles with stinging cells called NEMATOCYSTS used to feed on animal. They come in two body shapes: Polyp: sessile and vase-shaped Medusa: free-swimming and bell-shaped Radial symmetry

Poriferans and Cnidarians Watch Video: (11mts) Watch Video: (3:30-5:12) https://www.youtube.com/watch?v=DuQcmpHZ9tQ#t=436 http://www.ghanatubes.com/view/104/animals-around-us-invertebrates-what-are-they/

T Chart: Poriferans and Cnidarians  

Closure: Lab Notebook SCHOLARS In a few sentences, write what you learned about Poriferans and Cnidarians in your lab notebook.

Copy I CAN statement and Focus Question to notebook. I CAN & Focus Question I CAN Statement: I CAN identify the characteristics of annelids and arthropods. Focus Question: What are the characteristics of annelids and arthropods? SCHOLARS Copy I CAN statement and Focus Question to notebook.

Annelids Examples: Earthworms, Leeches, Clam worms Annelids are segmented worms that do not have legs. They have long tube-shaped bodies that are divided into a series of rings. Earthworms burrow through and live in wet soil or water and eat vegetation. Leeches are parasites that feed on small invertebrates (earthworms) or human blood. Bilateral symmetry

Arthropods They have jointed legs and a segmented body. Examples: Insects, Arachnids, Lobsters, Shrimp, Centipedes, Millipedes Arthropods They have jointed legs and a segmented body. Their body is divided into three parts: head, thorax, and abdomen. Largest group of animals on earth: insects

Arthropods cont…. Arthropods bodies are protected by a hard outside covering which sheds as they grow: EXOSKELETON They have digestive and nervous system Some arthropods use camouflage to blend into their habitat Bilateral symmetry

Annelids and Arthropods Watch Video: annelids Watch Video: arthropods https://www.youtube.com/watch?v=Xmtdm-tfnCA#t=55 https://www.youtube.com/watch?v=2bBHKHhgjeM

T Chart: Annelids Arthropods  

Closure: Lab Notebook SCHOLARS In a few sentences, write what you learned about Annelids and Arthropods in your lab notebook.

Copy I CAN statement and Focus Question to notebook. I CAN & Focus Question I CAN Statement: I CAN identify the characteristics of mollusks and echinoderms. Focus Question: What are the characteristics of mollusks and echinoderms? SCHOLARS Copy I CAN statement and Focus Question to notebook.

Examples: Snail, Oyster, Clam, Squid, Octopus, Slug Mollusks Soft bodies which is sometimes protected with hard shells. (Octopus does not have shell) They breath through lungs or gills and have organs Some with tentacles or arms with suction cups They live on land and in water Bilateral symmetry

Echinoderms Bodies covered with spiny skin outer covering Examples: Starfish, Sea Urchins, Sea Cucumbers, Sea Dollars Echinoderms Bodies covered with spiny skin outer covering They have bodies with at least 5 sections They have suction cup tube feet to walk Radial symmetry

Mollusks and Echinoderms Watch Video: (6:20-8:20) Watch Video: Mollusks Watch Video: Echinoderms http://www.ghanatubes.com/view/104/animals-around-us-invertebrates-what-are-they/ http://www.schooltube.com/video/f880c67b5ec743e5ac41/Mollusks%207 http://www.ghanatubes.com/view/104/animals-around-us-invertebrates-what-are-they/

T Chart: Mollusks and Cnidarians Echinoderms  

Closure: Lab Notebook SCHOLARS In a few sentences, write what you learned about Mollusks and Echinoderms in your lab notebook.

Copy I CAN statement to notebook. I CAN & Focus Question I CAN Statement: I CAN demonstrate my understanding of classifying invertebrate animals into six groups. SCHOLARS Copy I CAN statement to notebook.

Invertebrate Animal Groups Poster Activity MATERIALS ½ sheet of chart paper Markers, crayons PROCEDURES Divide class into 6 groups and assign each group one of the animal groups. Have members in each group make a poster that list the characteristics of their animal group. Then have members of each group draw and color illustrations of animals in their animal group. Have each group present their poster to the class and discuss ways the animals are alike and different.

Closure: Lab Notebook SCHOLARS In several sentences, write what you have learned about classifying invertebrate animals.