Embryology 101 by Kellie chick_peeking.gif
  • To increase knowledge and develop personal confidence and leadership ability through embryology project activities.
  • To develop youth interest in the science of embryology.
  • To provide learning experiences in incubation, hatching and brooding.
  • To provide opportunities to demonstrate skills mastered in embryology.
Introduction: (optional)
Show chicken dance video- hysterical! http://www.youtube.com/watch?v=yOAC0pBfmtU&feature=related
Techno chicken (just for fun) http://www.youtube.com/watch?v=p_2_EJogf2A
Brainstorm and create web “What do you know about chickens and eggs?”
Example: (check out Bubbl.us.com for online mapping tool that is easy to use and project using 3M)
Powerpoint from PSU 4-H club- Embryo development
Embryology Math Connection
•Count the number of eggs set.
• Guess how many eggs will hatch.
• Count the number of eggs that hatch and create fractions to represent hatch. Convert fractions to percentages to determine percent of eggs hatched.
Essential Questions:
What is in an egg? What is the difference between fertilized and non-fertilized?
• Break open an UNFERTILIZED egg (from the store) and point out major parts-use 4-H book as reference
http://urbanext.illinois.edu/eggs/lessonplan07.html lesson plan for exploring parts of an egg
• Draw an egg and label egg parts
• Describe which parts of the egg we eat.
• Explain why the eggs from the grocery store are not fertile.
• Draw an embryo and label parts. http://urbanext.illinois.edu/eggs/res16-egg.html (more info)

• Tell what each part does.
• Tell how a chick gets its food while growing in the egg.
Lots to do with an egg http://urbanext.illinois.edu/eggs/lessonplan08.html

What is an incubator and how does it work?
Know how to operate an incubator during incubation
• Describe the functions of the hen.
• Describe the function of the incubator.
• Compare the hen and the incubator by explaining what they each provide for the egg and how.
• Prepare an incubator for eggs.
• Read a thermometer- (Can review temperature/thermometer lessons)
• Set the thermostat to the correct temperature-( 100.5 degrees F, up or down 1 degree is fine, under 98 or above 102 is NO good)
• Turn the eggs three times a day, let them rest overnight on a different side each night.
• Journal entry: Write down the number of eggs you expect will hatch and explain the hatching process
What happens inside an egg?
Each Day is a clickable link to show photo and info about that stage of development
Understand changes that occur during incubation (refer to poster chart of embryo development or website above)
PSU Powerpoint (embryonic development stages with lots of photos)- **http://extension.psu.edu/4-h/projects/poultry/embryology/teacher-resources/powerpoints/embryonic-development/view**
• Candle eggs each day during incubation beginning at Day 3. (candle means shine light through to look for dark shadow) the dark shadow is chick growth, the dark spot should be fairly large and continue to get larger each day if chick is developing. Eggs with no dark shadow usually don’t have chicks developing inside)
How does nutrition affect living things?
• Write a list of things that would be good for a chick to eat.
• What are some things that would not be good to eat and why?
• Compare this list to things that are good for you to eat.
• Describe how a chick lives and eats while still an embryo in the egg.
• Draw the food pyramid showing the basic foods that children need. Try to eat one of each basic food every day and see how your body feels.
Science Experiment: How strong is an egg?
Follow steps of scientific method to conduct an experiment
“How much weight can an egg hold?”
Materials: 4 NON-FERTILIZED eggs set in 4 soda bottle caps (in my sink drawer)
HM reading books
Scale to weigh one book (in my cabinet, its metric)
Desk and newspapers to hold eggs and mess
Have students make their hypothesis and write in science journals
Then one at a time, have students place books on top of 4 eggs (evenly) keep counting until they crack
Then add up # of books, multiply by weight of 1 book, then divide by 4= weight that one egg can hold
Keeping records and a science journal
Day 1- Embryology 101 “What does embryology mean and what will you be learning?”
Day 2- Proper incubation methods “ Explain about proper incubation temperature, time,…”
Day 3 Embryo growth “Describe what happens inside an each during incubation”
Day 4 What do you expect to see on Monday? Predict hatch
• Keep a record of how many eggs were set, how many eggs were broken-out for study and how many eggs hatched.
• Use My 4-H Record. Keep a record of incubator temperature and humidity each time the eggs are turned.
• Keep a record of the weather, the high and low temperatures each day that the eggs are in the incubator. Record any unusual weather (incubator) conditions, problems, etc.
• Write word problems about hatching and incubation.
How does a chick hatches?
•Watch a chick hatch http://www.sites.ext.vt.edu/virtualfarm/poultry/poultry_hatching.html
• Gently and carefully hold a chick in your hands.
How to make a brooder
Extra Online Resources: