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Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below). 4. After writing the questions, write your answer in complete sentences. 5. After we review the answer to today’s question, correct your answer if needed, and place your bell work into your folder. We will use the same sheet of paper all week. All bell work from this week must be on one sheet of paper. Bell work will be collected on Friday. Define radial symmetry.

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Page 1: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Bell work1. Take out your bell work.2. On the next line, write today’s date.3. On the next line (or lines), copy today’s bell work questions (below).4. After writing the questions, write your answer in complete sentences.5. After we review the answer to today’s question, correct your answer if needed, and place your bell work into your folder. We will use the same sheet of paper all week. All bell work from this week must be on one sheet of paper. Bell work will be collected on Friday.

Define radial symmetry.

Page 2: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Date 11/8/13 Subject ZoologyBenchmarks SC.912.L.15.1 Bell work Define radial

symmetry.

Objective Distinguish the major organs of an echinoderm

Agenda • Echinoderm direct instruction

• Echinoderm notes

Essential Question

What structures are specific to echinoderms?

Vocabulary radial symmetry, central disk, radial canal, madeporite

Ticket Out: Notes completion

Homework: NONE

Page 3: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Bell work

Define radial symmetry.

• Symmetry around a central axis

Page 4: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 5: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

GENERAL CHARACTERISTICS

• Ex: sea stars, brittle stars, sand dollars, sea urchins, & sea cucumbers

• All marine

• “Spiny-Skinned Animals”

• Radial Symmetry as adults – 5 parts

• Regenerate = Autotomy

Page 6: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

GENERAL MORPHOLOGY

• A. INTERNAL SKELETON of Calcareous ossicles (plates)

• Variations :

Brittle / Sea Stars – many small plates that move with one another

Page 7: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Sea Urchin & Sand Dollar – skeleton plates fused into shell called “test”

Page 8: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Sea Cucumber – degenerated & buried in leathery body

Page 9: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

B. Water Vascular System

• Network of canals – run throughout body ending w/tube feet

• Varying internal water pressure can extend or contract tube feet

• Tube feet end in small suction cups

• Used in locomotion, food capture, & respiration

Page 10: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

C.• Mouth on oral surface

(bottom / ventral)

• Anus on aboral surface (top / dorsal)

Page 11: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

ECHINODERM TYPES

Page 12: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

SEA STARS• 5 Arms / Rays 4 – 10”

• Prey on bivalves (clams, mussels) & coral

• Many eat w/stomach outside body; pop stomach out mouth

Page 13: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Body Plan

• 2 – 4 rows of tube feet on each ray extend from ambulacral groove

Page 14: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

• Have pedicellariae or tiny, forceps-like structures on aboral surf. to pick up & remove dirt

Page 15: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Water Vascular System• Water enters

madreporite on aboral surface into a short, straight stone canal

• Stone canal connects to circular canal around the mouth = ring canal.

• Enters five radial canals extending down each arm

Page 16: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Water Vascular System

• Radial canals carry water to hundreds of paired tube feet.

• Bulb-like sacs or ampulla on tube feet contract & create suction

Page 17: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Other Body Systems

• No circulatory, excretory, or respiratory systems

• No head or brain

• Eyespots on the tips of each arm detect light

Page 18: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Reproduction

• Separate sexes

• External fertilization

• Females produce 200,000,000 eggs / season; meroplankton

Page 19: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 20: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 21: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 22: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

BRITTLE STARS

• Most mobile; fast

• Snake-like movement

• Disc .4 – 1.2 “; arms 2 – 2.4 “

• Scavengers

• In largest class (with basket stars)

• Arms break off readily

Page 23: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 24: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

BRITTLE STAR LARVA

Page 25: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

SEA CUCUMBERS

• Lack arms & visible spines; elongated

• Flexible, leathery body

• Burrowers

Page 26: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

• 5 rows of tube feet run length of body

• 10-30 modified tube feet form tentacles

around mouth

• Tentacles have sticky ends to trap plankton; or eat detritus

• Breathes through anus

Page 27: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

• Eject internal organs to scare predators (evisceration) ; regenerate in days

• Symbiosis with Pearl Fish which lives in its anus.

• Feed on gonads by day

Page 28: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 29: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 30: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

• Filter Feeders

• Can detach & move around

Sea lilies & feather stars

Page 31: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Sea Urchins

• Spines for protection, moving, trapping food

• Shell = test• Divided into 10 sections

• 5 Ambulacral w/tube feet• 5 Interambulacral without

• Covered w/muscle & skin to help mobility

Page 32: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

• Tube feet – moving, capturing food

• Pedicellarea – cleaning & defense

• Aristotle’s Lantern – 5 teeth together like bird’s beak; to scrape algae from rocks

Page 33: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 34: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Sand Dollars • Flattened version of urchin

• Live in sand along coastlines

• Food falls between dense spines & carried to mouth by cilia & tube feet

        

• Tiny, moveable spines for burrowing

• Aristotle’s Lantern

Page 35: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 36: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Sea Biscuits

• Not as flat as dollars

• Live in sand along coastlines;

burrow• Tube feet for respiration• Pedicellarea• Eat detritus in sand   • Short dense spines for

movement cover test

Page 37: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 38: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 39: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)
Page 40: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

What’s next

• Echinoderm notes, on Moodle

• Write your answers on paper for inclusion with your folder.

Page 41: Bell work 1. Take out your bell work. 2. On the next line, write today’s date. 3. On the next line (or lines), copy today’s bell work questions (below)

Friday 11/8 – Staple folder assignments together in the following order:

• Bell work

• Distinguishing Arthropods (Monday)

• Grasshopper Dissection (Tuesday)

• Spider Classification (Wednesday)

• Parasite Reading Comprehension (Thursday)

• Echinoderm Notes (Friday)

• Homework – Arthropod Review


Bell work: Scenario

Bell Work:

Today’s Bell Work Answer questions 1-2 under “Postwar Europe” on page 697 of Creating America

Today’s Bell Ringer 02/03

BELL-WORK TCAP Bell-Work # 27,28 TB pg 604 #25-33

16.3 Bell Work

Today’s Bell Ringer 02/ 07

Bell Work: Discuss…

Bell Work On your bell work sheet, date today’s entry: 1.If a cube has a side length of 2 m, what is it’s volume in cm 3 ? 2.Using the correct Sig. Figs,

Bell Work: Match

Bell Work: Why?

Today’s Agenda No Homework due today Fill in Planner Practice 2-5 Bell Work Lesson 2-5 Notes Today’s Objective SWBAT define a variable

Bell Work…

Bell Work

Today’s Bell Ringer 02/04

Bell Work: Work Intro

BELL WORK!

Bell Work!!!

BELL WORK :

Bell Work #6

Bell Work Reconstruction

Bell work 1

Bell work 2.25.14

Today’s Bellringer – September 9, 2014 Enter quietly and begin your bellwork BEFORE the tardy bell rings. Turn in any late work. Write down today’s Essential

Bell Work Today’s Bell Work: On your note card, write down three reasons why we need Health Education

Bell Work On your bell work sheet, date today’s entry: 1.How many Sig. Figs. are in 9520000? 2.Using the correct Sig. Figs, evaluate the following: 3.12

Bell Work: Weathers

TRANSITION BELL WORK

Quiet Bell Work