Middle School Matters: Modeling

with Magnetic Water Molecules

WORKSHOP LEARNING OBJECTIVES

Educators attending this workshop will:o Support the NGSS student learning outcomes of three dimensional lesson

design utilizing the following instructional materals:

o Water Kit© to model the polar nature of water, solubility, and the

water cycle

o Learn something new and interesting that is for your own professional

development.

o HAVE FUN!

WORKSHOP LEARNING OBJECTIVES

What NGSS dimensions will be targeted?

SEPs CCCs DCIsAsking questions and

defining problems

Patterns PS1.A: Structure and

properties of matter

Developing and using

models

Cause and effect LS1.A: Structure and function

Constructing

explanations and

designing solutions

Systems and system

models

LS1.C: Organization for matter

and energy flow in organisms

Engaging in argument

from evidence

Structure and function ESS2.C: The roles of water in

earth’s surface processes

ENGAGE WITH THE WATER CUP

Spill your water cup!

EXPLORE THE WATER CUP

1. Show me your idea of the physical representation of

water from the cup.

2. What criteria did you use to determine which model

represents a water molecule?

3. What color represents the oxygen? hydrogen?

4. Other observations?

5. I wonder. . . . .

EXPLAIN THE WATER CUP

Water is POLAR!

classconnection.s3.amazonaws.com

EXPLAIN WATER PROPERTIES

Results in hydrogen bonding between water molecules!

2014 Pearson Education, Inc.

LIQUID

EXPLAIN: THE PHASES OF WATER!

GAS

EXPLAIN: THE PHASES OF WATER!

SOLID

BUT . . .

EXPLAIN: THE PHASES OF WATER!

A discrepant event! Why does solid water float in liquid water?

SOLID WATER IS PECULIAR!

scienceabc.com

Approximately18 different forms of ice have been identified!

SOLID WATER IS PECULIAR!

http://www.linearwater.com/water.html

REMEMBER THAT HYDROGEN BONDING?

Hydrogen bonding has implications for the formation of

different ice crystal structures.

2014 Pearson Education, Inc.

• BUILDING CUBIC ICE

Step 1 Step 2

ICE ICE BABY!

• BUILDING CUBIC ICE

Step 3 Step 4

ICE ICE BABY!

• COMPLETED CUBIC ICE MODEL

ICE ICE BABY!

• FLIP THE CUBIC ICE MODEL

ICE ICE BABY!

• TRANSITION FROM CUBIC ICE TO HEXAGONAL ICE

MORE ICE ICE BABY!

• FOR HEXAGONAL ICE

• BUILD TWO RINGS,

• TURN 180O

MORE ICE ICE BABY!

• AND STACK!

MORE ICE ICE BABY!

BUILD A SNOWFLAKE!

Why does it matter?

SO WHAT, ICE FLOATS ON LIQUID WATER. . .

What would happen to a lake’s ecosystem if ice sank and the lake froze

from the bottom up?

http://www.wbur.org/hereandnow/2014/02/07/ice-fishing-milwaukee http://michiganradio.org/post/possible-signs-asian-carp-found-near-lake-michigan

WHAT IMPACT DOES DECLINING AMOUNTSOF SEA ICE HAVE?

http://nca2014.globalchange.gov/report/our-changing-

climate/melting-ice

https://chriscolose.wordpress.com/2008/09/09/on-the-arctic-sea-ice/

WOW! THERE’S A LOT OF SPACE IN THERE!

FURTHER APPLICATIONS

ELABORATE: VOLUME

http://mygoodplanet.com/self-repairing-roadways/ https://geographyclassroom2014.weebly.com/weathering.html

EXPLAIN: DENSITY

https://www.nyu.edu/pages/mathmol/textbook/info_water.html

DEMONSTRATE DENSITY DIFFERENCES

EXPLAIN: DENSITY

EVALUATE: WHY DOES ICE FLOAT?

scienceabc.com

ENGAGE: SOLUBILITY

What happens when salt

dissolves in water?

https://infograph.venngage.com/p/89106/solutions

EXPLORE: SOLUBILITY

Using Models to Explore the Phenomenon

EXPLAIN: SOLUBILITY

Using Models to Explain the Phenomenon

ELABORATE: SOLUBILITY

All models are wrong – some models are useful!

Salt is not a molecule but

rather an ionic compound.

• Does this molecule

interact with the water

molecules?

• ETHANE

• HYDROPHOBIC

EXPLAIN: SOLUBILITY

MOLECULAR MANIPULATION

EXPLAIN: SOLUBILITY

• ETHANOL!

• Does this molecule

interact with water

molecules?

• HYDROPHILIC

EXPLAIN: SOLUBILITY

The hydrogen atom in the alcohol group of ethanol will form a hydrogen bond with the oxygen in a water molecule.

EXPLAIN: SOLUBILITY

ELABORATE: THE WATER CYCLE

http://www.printablediagram.com/the-water-cycle-diagrams/

WATER RUNOFF,POLLUTION, AND EROSION

• Water is a major agent in changing

the Earth’s landscape.

• Runoff can contribute to water

contamination from sources such as

road salt, fertilizers, or pesticides.

https://alanhamr.weebly.com/water-erosion.html

EVALUATE: WATER RUNOFF,POLLUTION, AND EROSION

Create a model of the system of water runoff and erosion.

Key:

Notebook = Ground

Paperclips = Soil

Magnetic Water = Rain

Construction Paper = Ground Cover

NGSS Execution:

Give the students the items and let them come

up with their own model.

WATER RUNOFF,POLLUTION, AND EROSION

• Ground cover and other buffers help to prevent erosion and filter excess

nutrients before reaching rivers and lakes.

http://cahnrs.wsu.edu/news-release/2015/02/04/conservation-buffers-

please-the-eye-protect-the-landscape-says-wsu-researcher/https://www.pinterest.com/pin/172755335688464209/

Students may incorporate ground covers and buffers to investigate the

effect on erosion and water runoff.

EVALUATE: WATER RUNOFF,POLLUTION, AND EROSION

THANK YOU!

HOW CAN I GET THESE GREAT MODELS?

PURCHASE from 3D Molecular Designs:

https://www.3dmoleculardesigns.com/Education-Products.htm

Be sure to use your 20% show special discount code: SC19

BORROW from the Model Lending Library:

http://cbm.msoe.edu/lendingLibrary/index.php

https://www.3dmoleculardesigns.com/Education-Products.htmhttp://cbm.msoe.edu/lendingLibrary/index.php

THANK YOU!

FOR MORE MOLECULAR ENVIRONMENTAL

STORIES. . .

COME VISIT US AT BOOTHS 1267 AND 1269!

WE HOPE TO SEE YOU SOON!