Body changes Student activity Play

Boys on roller-skates Animation Play

Changes during puberty in boys Whiteboard exercise Play

Observations Whiteboard exercise Play

Observations Student activity Play

Puberty in boys Student activity Play

Puberty in boys – 10–11 years Illustration Play

Puberty in boys – 12–13 years Illustration Play

Puberty in boys – 14–15 years Illustration Play

Puberty in boys – 16–18 years Illustration Play

Puberty in boys – 5–8 years Illustration Play

Puberty in females Student activity Play

Puberty in females Slideshow Play

Puberty in males Slideshow Play

Puberty in males Student activity Play

Stating a problem and collecting data Whiteboard exercise Play

Stating a problem and collecting data Student activity Play

The additive property for arbitrary events – two boys in a family Whiteboard exercise Play

The heights of girls and boys Animation Play

The ratio of boys to girls Whiteboard exercise Play