Integrating STEM in Middle Level Food Science - PowerPoint Presentation

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Integrating STEM in Middle Level Food Science

Peggy Templeton M.Ed. NBCT

Kathryn

Wilkie

NBCT

Central Kitsap School District

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Contact Information

Peggy Templeton

peggyt@cksd.wednet.edu

http://moodle.cksd.wednet.edu/

View Secondary Schools, to CKJH and click on Templeton

Kathryn Wilke

kathrynw@cksd.wednet.edu

Central Kitsap Schools

PO Box 8

Silverdale, WA 98383

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Scientific Literacy

Use scientific knowledge in physics, chemistry, biological sciences, and earth/space sciences

process to understand the natural world but to participate in decisions that affect life, health, earth, and environment

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Technology Literacy

Ability to use, manage, and access technology. Students should know how to use the technologies how they are developed, and have skills to analyze how new technologies affect us, our nation, and the world

.

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Engineering Literacy

Systematic and creative application of scientific and mathematic principles to practical ends such as design, manufacture and operation of efficient and economical structures, machines, processes and systems

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Mathematics Literacy

Ability to analyze, reason, and communicate ideas effectively as they pose, formulate, solve and interpret solutions to math problems in a variety of situations.

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STEM philosophy

Science

Technology

Engineering

Math

Is integrated

Daily in the

classroom.

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What Alcohol is the found in your glass of wine?

Isopropyl Alcohol

Ethyl Alcohol

Methyl Alcohol

Propel Alcohol

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C2H5OH

C2H5OH

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Correct Answer

Ethyl Alcohol

C

2

H

5

OH

Ethanol has been used by humans since prehistory as the intoxicating ingredient of

alcoholic beverages

. Dried residues on 9,000-year-old pottery found in China imply that alcoholic beverages were used even among

Neolithic

people

.

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What is sodium bicarbonate?

Baking Powder

Alum

Baking Soda

Cream of tarter

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(Na3HCO

3

CO

3

·2H

2

O),

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Correct Answer

Baking Soda

In 1791, a French chemist,

Nicolas Leblanc

, produced sodium bicarbonate as we know it today. In 1846 two New York bakers, John Dwight and Austin Church, established the first factory to develop baking soda from sodium carbonate and

carbon dioxide

.

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What gives tomatoes the red color?

Beta Carotene

Fructose

Lycopene

Limonene

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Correct Answer

Lycopene

Lycopene's eleven

conjugated double bonds

give it its deep red color and are responsible for its

antioxidant

activity. Although

lycopene

is chemically a carotene, it has no

vitamin A

activity.

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What chemical is found in onions causing you to cry?

Acetic Acid

Hydrochloric Acid

Nitric Acid

Sulfuric Acid

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Sulfuric Acid

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Sulfuric Acid

When you cut an onion, you break cells, releasing their contents. Amino acid sulfoxides form sulfuric acids. This gas reacts with the water in your tears to form sulfuric acid. The sulfuric acid burns, stimulating your eyes to release more tears to wash the irritant away.

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Fast Food Visuals

As a class, students select a meal from a favorite fast food restaurant. With science scales and metric measurement students create a visual and share with class.

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Burger King Triple Whooper

1160

calories

1158.11

76

g fat

76.32000000000001

27

g saturated fat

3

g trans fat

205

mg cholesterol

51

g

carbs

11

g sugar

68

g protein

1170

mg sodium

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BK French Fries large size

580

calories

576.96

28

g fat

28.4

6

g saturated fat

6.09

0

g trans fat

0.25

0

mg cholesterol

0.19

74

g carbs

73.91

0

g sugar

0.19

6

g protein

6.42

990

mg sodium

990

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BK Large cola drink

390

calories

388.64

0

g fat

0

0

g saturated fat

0

0

g trans fat

0

0

mg cholesterol

0

104

g carbs

104.27

104

g sugar

104.27

0

g protein

0

10

mg sodium

9.48

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Experimenting with Leavening Agents:

Baking Soda = Sodium Bicarbonate

Baking Powder = Sodium Bicarbonate, Sodium Aluminum Sulfate. Mono-calcium Phosphate

Yeast=

Saccharomyces

cerevisiae

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Set up Experiment

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5 minutes

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10 minutes gases cause balloon to fly off flask

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After 60 minutes, gases still present

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24 Hours Later

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YEAST (fungi kingdom)

200 ML H2O+ 1 TABLESPOON YEAST

200 ML H2O+ 1 TEASPOON SUGAR+ YEAST

200 ML H20+ 1 TEASPOON SUGAR= ½ TEASPOON SALT

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Set up

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20 minutes

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45 minutes

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1 hour

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2 hours

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3 hours

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6 hours

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24 Hours

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What will the yeast look like in 48 hours

Hypothesize at your table group.

Write it down on the note card provided.

Be ready to share with the class.

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Are you surprised?

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Food chemical reaction

Home Made Geyser

What You Need:

roll of

mentos

candies

2-liter bottle of diet soda

index card

What do you think happens in your

stomac

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Outside

Remove lid from diet soda.

Place index card on top.

Place candy in a roll of paper so the candy will drop all at once.

Run fast.

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http://www.stevespanglerscience.com/experiment/00000109

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Physics!

Sodas contain compressed carbon dioxide. It's the gradual expansion and release of this pressurized gas in the form of bubbles that gives carbonated drinks their characteristic fizz. It's the surface tension of the liquid -- the strong attraction that bonds its water molecules together -- that prevents the gas from escaping all at once

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When

Mentos

are added, that surface tension is disrupted by additives in the candy -- gelatin and gum

arabic

, to name two likely culprits -- and the outside surfaces of the

Mentos

provide "nucleation sites" that encourage the rapid formation of bubbles. When you drop

Mentos

into a carbonated beverage, then, you cause the sudden release of pressurized gas for which the only exit is up and out through the narrow neck of the soda bottle -- hence the spectacular fountain effect

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Hypothesize:

What do you think the chemical reaction is in your stomach?

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Hard Cooked VS Hard Boiled

Hard Cooked

Place eggs in sauce pan.

Cover with cool water

Bring to boil.

Place on lid.

Turn off and let sit 20 minutes

Hard Boiled

Place eggs in sauce pan.

Cover with cool water.

Bring to boil.

Place on lid and boil for 20 minutes.

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Results: Sulfur Ring

Hard Cooked Hard Boiled

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pH Acids and Bases

What are the characteristics of Acids?

Think of foods that are acidic & taste:

Lemons and other citric fruit

Vinegars

What are the characteristics of Bases?

Baking soda

What is the reaction when you mix them?

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pH scale

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History

For thousands of years people have known that vinegar, lemon juice and many other foods taste sour. However, it was not until a few hundred years ago that it was discovered why these things taste sour - because they are all

acids

. The term acid, in fact, comes from the Latin term

acere

, which

means

"sour".

Bases taste bitter.

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[H

+

]

pH

Example

 

Acids

1 X 10

0

0

HCl

1 x 10

-1

1

Stomach acid

1 x 10

-2

2

Lemon juice

1 x 10

-3

3

Vinegar

1 x 10

-4

4

Soda

1 x 10

-5

5

Rainwater

1 x 10

-6

6

Milk

Neutral

1 x 10

-7

7

Pure water

Bases

1 x 10

-8

8

Egg whites

1 x 10

-9

9

Baking soda

1 x 10

-10

10

Tums

®

antacid

1 x 10

-11

11

Ammonia

1 x 10

-12

12

Mineral lime - Ca(OH)

2

1 x 10

-13

13

Drano

®

1 x 10

-14

14

NaOH

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NAMES TO KNOW

Here are a couple of definitions you should know:

Acid:

A solution that has an excess of H+ ions. It comes from the Latin word

acidus

that means "sharp" or "sour".

Base:

A solution that has an excess of OH- ions. Another word for base is alkali.

Aqueous:

A solution that is mainly water. Think about the word aquarium. AQUA means water.

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Rubber Eggs??

Effect of acid on calcium carbonate

? Hypothesize what

will

happe

.

Hard cook an egg.

Place egg in a jar of vinegar. Lids help keep the room less odiferous.

Observe what reaction happens when the egg is placed in the vinegar.

Leave the egg for 3 days.

Remove the egg and rinse.

Results

?

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Hard cooked egg in vinegar

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Carbohydrates

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Fats & Adipose Cells

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VITAMINS

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PHYTONUTRIENTS