Summary of the Hubble Expansion and the Hubble-Lamaitre Law of linear proportionality between recessional velocity and distance. The predicted collision between the Andromeda and Milky Way galaxies. The predicted timetable for the Sun’s transition to red and white dwarf status and impact for Earth. 2 sides.

Introduction to the Cosmic Background Radiation (‘CBR’) that goes with the Big Bang. Briefly summarising the Big Bang and the search for & confirmation of CBR. 2 sides.

IGCSE Atomic Structure, animated powerpoint. Electrons, protons & neutrons. Introducing Isotopes, Atomic weight, the Billiard Ball model, the Plum pudding model, the Gold Foil experiments, the Nuclear model, the Electron Shell model & electron configuration. 22 slides.

Electrostatics, voltage and current, dangers and protection for devices and humans, measuring voltage, current, power and energy, series and parallel circuit resistance, introducing variable resistors, NTC thermistors, LDRs, diodes, capacitors, relays, transformers, rectifiers and inverters.