Reaction rate Student activity Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Reflectors Student activity Play

Reflectors Whiteboard exercise Play

Regulation of heart rate by the nervous and endocrine systems Slideshow Play

Relationships between voltage and current Animation Play

Relative velocity vectors Whiteboard exercise Play

Relative velocity vectors Student activity Play

Repeated percentage change Class activity Play

Repeated percentage change Whiteboard presentation Play

Reproduction rate (fecundity) Whiteboard exercise Play

Reproduction rate (fecundity) Student activity Play

Resistance Student activity Play

Resistance Glossary Play

Resistors Whiteboard presentation Play

Resistors Class activity Play

Roasting turkey Animation Play

Role of adrenaline Slideshow Play

Roots and the index law for the power of a power Animation Play

Second-order reaction Animation Play

Second-order reactions Student activity Play

Simulation Student activity Play

Simulation of force measurement Simulation Play