The Day an Egg Solved the Mystery of the Cell Science Notebook Observation Sheet Technician's Name

Arizona Grown Specialty Crop Lesson Plan

The Day an U Level : Grades 4 - 6 Egg Solved Subjects: Science, Health, and Math the Mystery AZ ACADEMIC STANDARDS: SC04-S2C2, of the Cell SC04-S1C3, SC05-S4C1, SC06-S1C3, SC06-S4C1

and everything alive on Earth MATERIALS is made up of cells. An entire BRIEF DESCRIPTION Copy for each student: living thing can be only one Lesson will lead students to Diagram Worksheet cell, or like in humans there compare basic human cell Science Notebook can be billions of cells. structure to chicken egg Observation Sheet The cell is considered to be structure. Experiment will allow Student Self-Evaluation the smallest structure in students to gain a basic Sheet biology that has all the understanding of how nutrition Fresh Uncooked Eggs; the properties of living things. (or possibly toxins) moves number of eggs needed will Most cells have similar basic through cells. Students will solve the depend on whether you structures. So, demonstrate with one egg, or mystery by completing the understanding cells and the experiment. Lesson allow students to work in basics of cell structure is groups or includes hands-on and critical to making sense out of visual experiences. individually. biology. One of the main Wide Mouth Jar(s): The purposes of cells is to number of jars needed organize the process of our OBJECTIVES depends on how many being alive. We don't tell our ! For students to recognize experiments will be legs to walk, or our jaws to that by investigating diverse conducted in the room. A chew. We have brain cells, natural systems we can learn mayonnaise or peanut stomach cells, bone cells, and important things about butter jar works well. It many other types. Each is ourselves. needs a tight fitting lid. Cloth ! For students to gain different from the others and or paper measuring tape. experience identifying, they are responsible for the White Vinegar: If multiple observing, and predicting a processes of life. Let's look experiments are sequence of events which inside one of the nutrition conducted, the gallon size is establish a natural system. cells. cheaper. ! For students to consider (introduce Diagram Sheet; see ways of using this Latex gloves, as needed. Teacher's Resource Guide) information to be Some of our cells distribute responsible caretakers of VOCABULARY nutrition to our body. It's not their own bodies and the Arizona Grown egg, possible for us to take one of planet. membrane, osmosis, them out of our bodies to porous, albumen, natural watch the system work. system, shell, nutrition, However, we can see a similar ESTIMATED nucleus, cells, yolk, DNA life system when we TEACHING TIME experiment with an egg. Introduction: 30-55 minutes RELATED LESSONS Can Although different, eggs are Begin the Experiment You Walk on Eggs? Which observations: 10 minutes a day an excellent visual aid for Came First, The Chicken for 3 days Follow-up learning how human cells or the Egg? discussion/results: 30-45 work. minutes We are using Arizona Grown SUPPORTING chicken eggs. Here in Arizona, INFORMATION there are chicken ranches that It seems a mystery...the way produce millions of eggs for everything on Earth is our local grocery stores. We can be sure that Arizona eggs are fresh and quality SUPPORTING INFORMATION refrigerator or ice chest Look for the chalaza (cont'd) before use. (pronounced: cha laag) it is a eggs you had for breakfast end twisted cord or thick stands of up moving through your nutrition PROCEDURES albumen among the egg white Session 1. that maintain the yolk in the cells. Let's begin by identifying Introduce the mystery (use the parts of an egg (refer back center of the egg. Supporting Information) to the Option (would add about 10 to Diagram Sheet, see students. Teacher's Guide) and see how minutes to the lesson): Using the Diagram individual students or student it's alike, or different, from a Worksheet lead students groups can take an egg(s) and human cell. through the basic structure of a dissect it, matching the actual What happened? (3 days later) human cell. Information on the parts to the Diagram. The eggshell is made of calcium Teachers Resources Page carbonate, also known in nature Session 2. provides basic cell biology and as limestone. When the acid in Introduce the experiment by facts to discuss. Still using the the vinegar covered the shell explaining you will be using a Diagram Worksheet point the there was a chemical reaction. fresh Arizona Grown chicken students to the egg diagram The water in the vinegar was egg to illustrate the mystery of and identify the parts. forced through thousands of tiny how human cells and eggs are If you were using one egg for pores in the shell and in the egg alike. illustration it would be beneficial membrane. This process is Distribute the Science to distribute dry broken pieces called osmosis, where one thing Notebook Observation is absorbed into another. The of eggshell among the students. Sheet. If there will be more egg gets bigger as more water is To see the air cell hold the egg than one experiment absorbed and the acid in the in front of a strong flashlight conducted, there is a paper vinegar eats away or dissolves beam, or use the old fashioned measuring tape along the the shell. way of passing it in front of a edge of the Observation The nutrition cells in our bodies candle flame. The air cell is Sheet that can be used by act much the same way. They always at the large end of the individuals or groups. have a continuous life system egg. The older the egg, the where nutrition (good or bad) is Continue in this order: larger the air cell. constantly absorbed into the 1. Measure the outside To show the 1St membrane, cells and fed to our bodies. circumference of the egg. break open an egg, empty it and We solved the mystery! By 2, Record that measurement on loosen the membrane from the looking at this well-used egg we the Observation Sheet. can scientifically explain how inside of the shell, it should lift nd 3. Carefully put the egg into nutrition is passed through our up in sections. To show the 2 the jar (if there are any cracks membrane students will need to body's cells. Also, we can better you must use another egg.) understand that the choices we look at the yolk of the egg and make about the food we eat and realize there is a thin, clear 3. Cover the egg with white drink determine the quality of membrane around it that holds vinegar. nutrition that is distributed the yolk together. Cooks call the 4. Screw the lid on tight. throughout our bodies. albumen the egg white. Using a 5. Students should record piece of eggshell or a spoon initial observations. GETTING STARTED show the students what it looks 6. Set the jar(s) aside in a This is consumer protection like. Students will observe two safe place for three days. information. Occasionally a consistencies of albumen: 7. The next three days the student may have an allergy to Nearest to the shell membrane eggs, if so, that student should students should document any only observe. After the project is is thin watery albumen that changes they see in the jar. completed everyone handling spreads around the thick, more 8. After three days nd eggs should wash their hands jelly like, albumen. This 2 CAREFULLY take the egg out of with soap and water. Be sure albumen is a major source of the jar and measure around the protein. Show the yolk: the middle of the egg (The shell of that all eggs are kept in a the egg should be gone, and the yellow portion of the egg. The egg should be rubber-like and intensity of the color depends on larger than before). the mix of chicken feed. 9. Students should record the measurement. 10. Give students the opportunity to record all of PROCEDURES (cont'd) Information about consumer the changes the egg has made: safety, egg production, and size, sight, smell, and touch. business include: Discuss: While the changes Presidents Council on Food may seem mysterious, Safety - Egg Safety everything can be Educating individuals scientifically explained. throughout the production to (Supporting Information) consumption continuum. Also, help them to www.foodsafety.qov/ understand that not just one ~fsq/ceqgs thing happened, that instead there was a series of actions that United States Department of result in a scientific Agriculture system. www.usda.gov One of the Optional Discussion: We can't , tell our Nutrition Cells exactly most comprehensive what to do, however, we do information sources is: influence whether the cells have Egg Nutrition Center good nutrition or worthless stuff An all-encompassing center of to distribute. Remember: research, safety, business, everything that we put in our marketing for the egg industry mouth, we wear somewhere in and the consumer. our body. That is why our food www.enc-online.orq and drink choices are so In Arizona be sure to check important. Finally, students should answer the evaluation these websites: questions on the Science State of Arizona Dept. of Notebook Observation Sheet Agriculture - ARIZONA and complete the Student GROWN Program, 1688 W. Self-Evaluation Sheet. Adams, Phoenix, AZ 85007, (602) 542-4373. EVALUATION OPTIONS: www.agricuIture.state.az.us 1. Teacher evaluation of Hickman's Egg Ranch Student Observation Sheet & This website has some Questions interactive kid activities. 2. Student Self-Evaluation sheet Arizona can be proud of this homegrown business. EXTENSIONS AND www. hickmanseggs.com VARIATIONS: Drug/Alcohol Prevention CREDITS Environmental Toxins as they All of these websites were impact birds, reptiles, and fish helpful in the development of CURRICULUM DESIGN eggs. this unit, especially the Egg Anita R. Easley Nutrition Center. th RESOURCES It's also important to the 6 grade teacher Good education sites include: universe to acknowledge my Gilbert Elementary School University of Illinois Extension own flock of chickens that Program www.urbanext.uiuc.edu/eqqsEd faithfully produce 18 or so ucation World. Their beautiful brown and blue eggs lesson planning includes Why all every day. I also give credit to the EGGS-citement about eggs? Henrietta, a stray chicken that An eggs-plosion of across-the has lived several years on our curriculum eggtivities for all school campus. grades. This Arizona Grown Specialty www. education-world.com EDUCATORS' NOTES Crop Lesson Plan was paid for by a grant from the AZ Depart of Ag office of Marketing and Outreach. Amazing Egg: The Day an Egg Solved the Mystery of the Cell Science Notebook Observation Sheet Technician's Name

Experiment Started: ______Experiment Ended:- Write or illustrate your daily observations

DAY 1

DAY 2

DAY 3

DAY4

DAY 4

ANSWER THESE QUESTIONS ON THE BACK OF THIS PAGE

1. Use complete sentences and describe what you enjoyed most about this experiment. 2. How are chicken eggs and a human cells alike? How are they different?

3. How can you use this experience in your daily life? Teacher Key and Lesson Resource Sheet: Amazing Egg — Cell Diagram Worksheet

Match item numbers 10 Basic Chicken E22 Structure each part:

1shell 2 membranes

3 air cell

4 albumen

5 egg white 6yolk

7chalaza

REMINDER: The purpose of this comparison is for the students to become aware of the common elements of a living cell. Microscopes are necessary to look at human cells.By using an egg as a visual aid students can see a similar structure. 1. Around the egg: a shell The shell is calcium carbonate or limestone. Even though the shell is hard it is coveredwith almost ten million pores. The pores allow water and gases to pass through. An egg may be white, brown, or blue, depending on the breed of chicken. Most ArizonaGrown eggs are white because white Leghorn chickens are the most common. 2. Inside the egg: an inner and outer membrane One membrane is just inside the shell and provides a protective barrier against germsand bacteria. The second membrane is a thin sack that contains the yellow yolk. 3. Inside the egg: an air cellA pocket of air forms at the large end as the egg cools. The healthy internal temperature of a chicken is about 107 degrees F, so an egg is very warm when laid. 4. & 5. Inside the egg: the albumen or em white There are two kinds of albumen (also called egg white). Just inside the shell a thin,watery albumen protects the inner thick egg white. The thick egg white is very nutritious with riboflavin and half of the egg's protein. 6. Surrounded by egg white: the yolk The yellow yolk is rich with vitamins, minerals, protein, and some fat. A thinmembrane or sack holds the egg yolk together. 7. Floating in the egg white: the chalaza The chalaza is extra thick strands of albumen that anchor the yolk and prevent it from being thrown against the side of the egg. The more prominent the chalaza the fresherthe egg. Amazing Egg: The Day an Egg Solved the Mystery of the Cell Teacher Key and Lesson Resource Sheet Cell Diagram Worksheet

Basic Human Match item numbers to each part:

1 membranes

2 cytoplasm 3DNA

4 nucleus

REMINDER: The purpose of this comparison is for the students to become aware of the structure and operation of the basic human cell: Healthy human cells usually have four things in common. 1. Around the cell: a cell membrane According to its function, the cell membrane is selectively permeable. This means some materials are allowed to pass into or out of the cell, but not others. You can explain it to the students like this: The cell membrane can be compared to human skin. While coloring eggs for Easter, if you put your hand into the dye, it will also dye your skin. The colored water moves into the skin pores and leaves behind color. Now, if you put your hand into a cup of chocolate syrup will the same thing happen? No, your skin will be sticky and messy. Why? The chocolate is too thick and doesn't pass into or through the skin.

2. Within the cell membrane is: cytoplasm Cells are filled with a water-based solution called cytoplasm. Within the cytoplasm are the tools necessary for the cell to do its job. 3. Within the cytoplasm is: a nucleus You may remember that not all cells have a nucleus; that's another lesson in the wonderful world of biology. Today, let's keep it simple — a cell has a nucleus.

4. Within the cell membrane, contained in the cytoplasm, and usually inside the nucleus is: DNA The science of DNA is changing the world.. For this lesson the important fact is that DNA is a ladder-like twisted molecule that is in the cytoplasm of most cells. Amazing Egg: The Day an Egg Solved the Mystery of the Cell Cell Diagram Worksheet

Basic Human Cell Structure Match item numbers to ! each part: I 1 membranes + i + + 4 + i + i + ! 2 cytoplasm + + 4 + a + ++ , 3DNA ! 4 nucleus +V#++0

*+t+#+—+t+

t~l~l+lrl~lT 4++++lam+it:! ~~t+l+t+t+t+~r ++++~— — .tttt#+1 ++#+++t+#+!+++++#+t+#+#+++!

Basic Chicken EE2 Structure Match item numbers to each purl:

1shell

2 membranes

3 air cell

4 albumen

5 egg white

6yolk

7 chalaza

Inches

112 1 112 _ 2 _ 1/2 ______3 ____ in __ 4 ___ 112 ______5 ____ 113 ______6 Amazing Egg: The Day an Egg Solved the Mystery of the Cell

Name: Teacher: Title of Work: ______Criteria Points

My ideas shine! i Science Concepts I don't get it yet. I get some of it. I get it. can teach it to a friend. Science Notebook I did record and I did record details Observation I did not record. I started to Sheet record.

I did some of the I worked well with . I did less than work. I helped my team, cleaned Team Member I didn't help my team. I clean up and up, stayed on task was off task. shared was off task quite a , the work bit. the time. work equally. I feel like f can use I can understand Many of the vocabulary º Some of the the vocabulary and use the Vocabulary words are still vocabulary words confusing to me. are confusing to me. words most of the vocabulary time. correctly. Usually used Consistently used Rarely used legible Sometimes used Neatness handwriting. legible handwriting. legible legible handwriting. handwriting. Total--> Teacher Comments: