1st science 7 changes during puberty
TRANSCRIPT
Motivation• What changes do you
notice in the picture of Romeo from grade one to the present?
• Do these changes happen to you?
Presentation
• Recall the changes that have occurred in one's body since he/she was nine years old.
• Record changes in the notebook.
Tally answers in a table as shown: Changes Yes No In females:• Growth rate increase• Hips begin to broaden• Starts to look rounder and softer• Breasts become big
Tally answers in a table as shown: Changes Yes No In males:• Growth rate increases• Shoulders begin to broaden• Adam's apple becomes more
prominent
Concept Formation
• Did all of you experience the same changes?
• How do you react to these changes?• How many are surprised?• How many are ashamed?
Concept Formation
• At the ages of 11 - 14, the human body enters a period of dramatic physical and mental changes referred to as adolescence or puberty.• Changes become noticeable at the
age of 9 for females and 11 for males.
Concept Formation
• During this period, the body begins to undergo changes in sexuality.• Puberty means a young person has the
ability to procreate or produce offspring.•When puberty begins, the girl start to
menstruate. Boys start releasing sperms in the semen which can fertilize the female's mature egg.
Concept Formation
• Changes in one's physical characteristics are mainly caused by chemical produced by the body, called hormones.• The male sex organs produce testosterone
while the female sex organs produce the hormone called estrogen and progesterone.
Application• What other changes
happen to male and female as they reach puberty?
• If you menstruate any day today, should you be afraid? Ashamed?
Evaluation Classify whether the following changes occur in boys or on girls. Rearrange the items under proper heading.
Girls Boys_______________ ______________________________ _______________
1. The breast begins to form.2. The shoulders become broad.3. The body becomes muscular.4. The Adam's apple enlarges.5. The hips become broader.6. The voice becomes deeper.
Answer:Girls
The breast begins to form.The hips become broader.
BoysThe shoulders become broad.The body becomes muscular.The Adam's apple enlarges.The voice becomes deeper.