SME
Grade 9 Science
Reproduction and development
The main lesson, then each kind of problem it solves.
Reproduction and development
Main lesson
Sexual or asexual reproduction?
Use this for “Why do offspring from sexual reproduction differ from both parents?”
Which germ layer forms it?
Use this for “Which germ layer forms the brain and spinal cord?”
The menstrual cycle
Use this for “Why does menstruation stop during pregnancy?”
Hormone levels through a cycle
Use this for “Which hormone keeps the uterine lining in the second half of the cycle?”