Reduction formulas due to periodicity Student activity Play

Reduction formulas due to periodicity Whiteboard exercise Play

Refractory period Slideshow Play

Relationship between the period of revolution and the orbital radius Illustration Play

Root-mean-square current and voltage Simulation Play

Root-mean-square current and voltage Whiteboard exercise Play

Root-mean-square current and voltage Student activity Play

Rounding the two numbers Whiteboard exercise Play

s-block elements Animation Play

Satellites Class activity Play

Satellites Whiteboard presentation Play

Satellites Whiteboard presentation Play

Satellites Class activity Play

Sedimentary rocks. Part II Class activity Play

Sedimentary rocks. Part II Whiteboard presentation Play

Separation of two immiscible liquids in a separating funnel Animation Play

Sexual intercourse Animation Play

Shifting the graph along the y-axis Animation Play

Shifting the graph along the  x-axis Animation Play

Solution of a linear equation in two variables Student activity Play

Solution of a linear equation in two variables Whiteboard exercise Play

Solutions of equations with two unknowns Animation Play

Solving an inequality in two variables Animation Play

Solving equations with two unknowns Whiteboard exercise Play

Solving linear equations in two variables Whiteboard exercise Play