Biology Share-A-Biology Share-A-ThonThon

NSTA Annual ConferenceNSTA Annual Conference

March 30, 2008March 30, 2008

Presenter: Kristen KohliPresenter: Kristen Kohli

Properties of WaterProperties of Water

Cohesion Cohesion demonstrationdemonstrations:s:– Penny drop Penny drop

contestcontest– Cutting water Cutting water

with toothpickswith toothpicks

Properties of WaterProperties of Water

Adhesion demonstrations:Adhesion demonstrations:– Paper towel clean up from cohesion Paper towel clean up from cohesion

demosdemos– Long-distance water pouringLong-distance water pouring

Properties of WaterProperties of Water

Water expands as Water expands as it freezes:it freezes:– Ice cubes floatIce cubes float– Blown out water Blown out water

bottlebottle

Properties of WaterProperties of Water

Hydrophobic substancesHydrophobic substances

Properties of WaterProperties of Water

Hydrophilic SubstancesHydrophilic Substances– ““Insta-Snow”® or sodium Insta-Snow”® or sodium

polyacrylamidepolyacrylamide– Disposable diapersDisposable diapers– Addition of saltAddition of salt

Polarity DemonstrationPolarity Demonstration

The Fluid-Mosaic The Fluid-Mosaic ModelModel Density demonstration bottlesDensity demonstration bottles Structure of a phospholipidStructure of a phospholipid

The Fluid-Mosaic The Fluid-Mosaic ModelModel Phospholipid arrangement Phospholipid arrangement

challengechallenge

The Fluid-Mosaic The Fluid-Mosaic ModelModel

Osmosis ActivitiesOsmosis Activities

Diffusion through a semi-Diffusion through a semi-permeable membranepermeable membrane

Potato osmosisPotato osmosis Card practiceCard practice

Review Activities – Review Activities – Informational Informational PamphletsPamphlets Informational PamphletsInformational Pamphlets

Review Activities – Review Activities – Informational Informational PamphletsPamphlets

The CoverThe Cover

Review Activities – Review Activities – Informational Informational PamphletsPamphlets

Attention Attention Grabber – the Grabber – the inner foldinner fold

Review Activities – Review Activities – Informational Informational PamphletsPamphlets The “meat & potatoes” – the The “meat & potatoes” – the

insideinside

Review Activities – Review Activities – Informational Informational PamphletsPamphlets

Works Cited – Works Cited – The back The back covercover

Review Activities – Review Activities – Team PostersTeam Posters

Review Activities – Review Activities – Topic FoldersTopic Folders

Review Activities – Review Activities – Topic FoldersTopic Folders

The coverThe cover

Review Activities – Review Activities – Topic FoldersTopic Folders