living things 7 th grade chapter 8 section 1 pgs. 214-217
TRANSCRIPT
LIVING THINGS7th Grade
Chapter 8 Section 1Pgs. 214-217
Do Now…
•Complete Chapter 8 Preview Activity.•Glue completed worksheet in notebook.
Objectives
Students 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. 216-217
Plants AnimalsUse ___________, ____________, 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
Objectives
Students 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 WordFeature 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 Animals
Kingdom Phylum
Class
Order Family
Way to Remember
Kangaroos 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