1. Science Embryology: Lesson 1, Day 2: Four Primary Needs: Foldables

2. The BIG Question: What are the four primary needs of a chicken embryo?

3. Four Primary Needs of a Chicken Embryo Heat

4. TOP FLAP Why? It makes the embryo grow.

5. BOTTOM FLAP How? Use an incubator set at 99.5°F.

6. Four Primary Needs of a Chicken Embryo HeatHumidity

7. TOP FLAP Why? It keeps the embryo from getting stuck to its shell.

8. BOTTOM FLAP How? Put water in the trough of the incubator.

9. Four Primary Needs of a Chicken Embryo HeatHumidityUnpolluted Air

10. TOP FLAP Why? The embryo needs to breathe oxygen.

11. BOTTOM FLAP How? Don’t use anything with a strong smell.

12. Four Primary Needs of a Chicken Embryo HeatHumidityUnpolluted Air Exercise

13. TOP FLAP Why? It keeps the embryo healthy and keeps it from getting stuck to its shell.

14. A Monday night: Letters Up Tuesday night: Letters Up Tuesday night: Letters Down

15. BOTTOM FLAP How? Turn the eggs an odd number of times so they’ll be on a different side each night.

16. Four Primary Needs of a Chicken Embryo HeatHumidityUnpolluted Air Exercise

17. Sum it up! What are the four primary needs of a chicken embryo?

18. Primary Needs of a Developing Embryo Four Primary Needs of a Developing Embryo Why These Things Are Important How We Provide These Things heat It makes the embryo grow. Use an incubator set at 99.5° F. humidity It keeps the embryo from getting stuck to its shell. Put water in the trough of the incubator. unpolluted air The embryo needs to breathe oxygen. Don’t use anything with a strong smell. exercise It keeps the embryo healthy and keeps it from getting stuck to its shell. Turn the eggs an odd number of times so they’ll be on a different side each night.