A battery of cells Animation Play

A battery of cells Student activity Play

A parachutist Animation Play

A parallel combination Animation Play

Arithmetic progression – finding the first term and the difference Whiteboard exercise Play

Buccal cavity – the first section of the alimentary canal Slideshow Play

Changes in the first ionisation energy across Period 3 Animation Play

Changes in the first ionisation energy across Period 3 Illustration Play

Cnidarians – the first tissue organisms Student activity Play

Departures from Mendel's first law: co-dominance Whiteboard exercise Play

Departures from Mendel's first law: co-dominance Student activity Play

Diffusion (Fick's first law) Student activity Play

Dmitri Mendeleev and the first periodic table Animation Play

Effect of concentration on the reaction rate. Graphical methods Class activity Play

Effect of concentration on the reaction rate. Graphical methods Whiteboard presentation Play

Einstein's first postulate Whiteboard exercise Play

Einstein's postulates Student activity Play

Electron configuration of few first elements Animation Play

Embryonic stage – the first 8 weeks of embryo development Student activity Play

Embryonic stage – the first 8 weeks of embryo development Whiteboard exercise Play

Equilibrium of forces – Newton's First Law of Motion Whiteboard exercise Play

Equilibrium of forces – Newton's First Law of Motion Student activity Play

Factorising perfect square trinomials – common factor first Whiteboard exercise Play

Fertilization and the first weeks of the embryo's life Student activity Play

Fertilization and the first weeks of the embryo's life Whiteboard exercise Play