12-18 years

Solar eclipses : luminosity, temperature, area covered…

Kesulitan: ★ ★

Solar eclipses : a “scale model”

Kesulitan: ★

Moon, phases and eclipses

Kesulitan: ★ ★

Ring’Round the roses in the houses of the Sun

Kesulitan: ★

Elliptical Orbits

Kesulitan: ★ ★

Rock Cycle

Kesulitan: ★ ★

Solar System Science

Kesulitan: ★ ★

Planet Tours

Kesulitan: ★ ★ ★

Saturn 

Kesulitan: ★ ★ ★

Doppler effect and Saturn spectrum

Kesulitan: ★ ★ ★

Roemer and the velocity of light

Kesulitan: ★ ★ ★

From the Galilean Solar System to the detection of new minor bodies

Kesulitan: ★ ★ ★

Second, metre and speed of light

Kesulitan: ★ ★

Comets: very especial visitors

Kesulitan: ★ ★

Determination of Jupiter’s mass

Kesulitan: ★

Kepler Laws. Experiments

Kesulitan: ★ ★ ★

Galileo and the phases of Venus

Kesulitan: ★ ★ ★

The orbit of Venus

Kesulitan: ★

Navigating the Night Sky

Kesulitan: ★ ★

Equatorial Sundial

Kesulitan: ★ ★

Light pollution, an introduction to astronomy/environmental education

Kesulitan: ★ ★

Light pollution

Kesulitan: ★

Working before observations

Kesulitan: ★

Observation of variable stars

Kesulitan: ★

Determining longitude and latitude

Kesulitan: ★