LIVING THINGS7th Grade

Chapter 8 Section 1Pgs. 214-217

Do Now…•Complete Chapter 8 Preview Activity.•Glue completed worksheet in notebook.

ObjectivesStudents will…•Complete Chapter 8 Preview Activity to become familiar with chapter content•Distinguish between living and nonliving things• Identify what living things need to survive•Get back chapter 20 science test

Organisms•Any living thing is called an organism.

•Which of the following would be considered an organism?• Frog• Leech•Rock• Sand• Elephant• Ipod

What are living things like? The Cell

Smallest unit of life

Has an orderly structure

Contains instructions for life

Gets and uses materials from its

surroundings

How organisms grow•A one-celled organism grows by increasing the size of the cell.•A many-celled organism grows by increasing the number of cells.

Plants vs. Animals pgs. 216-217Plants Animals

Use ___________, ____________, and_____________ to make food.

Cannot use ________________ to make food.

Must get energy by _________ ______________

Food must be combined with ______________ to release energy

For Next Time…•Complete Self-Check questions #1-3 pg. 217 in science notebook•Have test signed by a parent due Monday•http://www.pbslearningmedia.org/resource/tdc02.sci.life.colt.alive/is-it-alive/

HOW ARE LIVING THINGS

CLASSIFIED?7th Grade

Chapter 8 Section 2

Do Now…•Define genus, phylogeny and kingdom on index cards. •Check Self Check questions #1-3 pg. 217

ObjectivesStudents will…•Describe how early scientists classified living things•Explain the system of binomial nomenclature•Demonstrate how to use a dichotomous key

ClassificationBinomial Nomenclature

(words are in Latin)

First WordGenus

(a group of similar species)Second Word

Feature of the organism

Classification•Why people use scientific names to classify organisms•1) Using scientific names helps avoid mistakes•2) Organisms with similar evolutionary histories are classified together•3) Scientific names provide descriptive information about a species•4) Scientific names allow information about organisms to be organized easily and efficiently

Determining the phylogeny of an organism

Scientists use…•Similarities in structure•Fossils•Hereditary information•Early stages of development

Classification of AnimalsKingdom Phylum

Class

Order FamilyWay to RememberKangaroos Play Cellos, Orangutans Fiddle, Gorillas Sing

Tools for Identifying Organisms• Dichotomous keys are used to identify organisms.• They provide descriptions and illustrations of organisms and information about where an organism lives. • For example—the characteristics used to identify mice in North America• 1) Tail hair 2) Ear Size 3) Tail Length 4) Tail Coloration

•What characteristics could you use if you wanted to identify a dog?

Dichotomous Key•Using a Key•Classification of Living Things

•http://dnr.wi.gov/org/caer/ce/eek/critter/watercritter/critterindex.htm

For Next Time…•Complete Self-Check Questions #1-3 pg. 220 on loose leaf. •This will be a 5pt HW assignment!

USING A DICHOTOMOUS KEY AND INTRO TO THE

CELL THEORY7th Grade

Review Now…•Check Self Check questions #1-3 pg. 220•Hand in questions

Objectives•Students will…•Describe the development of the cell theory•Practice working with a dichotomous key to identify macro invertebrate life

In the Beginning…•Scientists didn’t know what cells looked like or even that they existed! •In the late 1500s, a Dutch Optometrist created the first microscope by putting 2 magnifying glasses together in a tube.

Scientist ContributionsScientists Contribution

Antonie van Leeuwenhoek

Made a simple microscope

Robert Hook Named cells after viewing cork under a microscope

Matthias Schleiden Discovered that all plants are made of cells

Theodor Schwann Discovered that all animals are made of cells

Rudolph Virchow Proposed that every cell came from a cell that already existed

Partner Pairs• Sean/Greyson•Maddie/Megan• Gabby/Caroline K.• Gabrielle/Anna• Julia/Abby• Caroline H./Rachel• Salvo/Owen•Michael C./Ryan• Jake/Michael S.

EEK! Aquatic Critter Key •http://dnr.wi.gov/org/caer/ce/eek/critter/watercritter/critterindex.htm•(Type in search—Eek Water Critter Key)

•With a partner, explore and identify macro invertebrate creatures using a dichotomous key.•Label the creatures on the key.

For Next Time…•Read pgs. 221-225•Define cell theory, cell walls, cell membrane, cytoplasm and ribosomes