1. Note: Scaffolding & Differentiation Required.

2. OBJ: Given lab SWBAT measure the length of a developing fetus and describe the stages of fetal development with 70% accuracy. BRING YOUR iPad ! DN: Review millimeter versus centimeter and Lab Procedures ACT: Complete Lab write-up (including Tables and Conclusion Questions); if time permits: review results Note: HFD Quiz contains 25 questions ( front & back ) HW: Complete Lab write-up and HFD Lab Quiz (lab/scantron due tomorrow, 3/20); INERH EXAM, this Monday, 3/23.

3. Science ~ Metric System only! inches (Do Not Use) centimeters hairs 10 millimeters 3 2 1

9. 1.8 cm 4.95 cm 5.2 cm 8.9 cm 11.2 cm 13.7 cm 14.3 cm 24.4 cm 30.8 cm 37.6 cm 5 cm 14 cm 23 cm 30 cm 36 cm 9 weeks Eyes closed Sex can not be determined 16 weeks Mother feels movement Sex can be determined 24 weeks Body covered with hair All organs well developed 32 weeks Eyes open Body “chubby” looking 38 weeks Body hair gone Can grasp with hand

10. Going Further Embryo: beginning, early stages of development; body structures not recognizable. Fetus: later stages of development; body structures recognizable. Use iPad to find definition of embryo and fetus.

12. 1.8 cm 4.95 cm 5.2 cm 8.9 cm 11.2 cm 13.7 cm 14.3 cm 24.4 cm 30.8 cm 37.6 cm 5 cm 14 cm 23 cm 30 cm 36 cm 9 weeks Eyes closed Sex can not be determined 16 weeks Mother feels movement Sex can be determined 24 weeks Body covered with hair All organs well developed 32 weeks Eyes open Body “chubby” looking 38 weeks Body hair gone Can grasp with hand

13. What have we learned? ABCDE 9 weeks16 weeks24 weeks32 weeks38 weeks Eyes closedMother feels movement All organs well developed Eyes openCan grasp with hands Sex can not be determined Sex can be determined Body covered with hair Body “chubby” looking Body hair is gone 50 mm140 mm230 mm300 mm360 mm Use your iPad to find the definition of embryo and fetus.