A closer look at the sine Whiteboard exercise Play

A closer look at the trigonometric ratios Student activity Play

A perpendicular through a point off the line Simulation Play

A perpendicular through a point off the line Student activity Play

Atherosclerotic lesions Slideshow Play

Body protection Student activity Play

Diseases caused by atherosclerosis and arterial hypertension Student activity Play

Finding the length of the triangle legs Animation Play

Geometric problems Student activity Play

Illnesses caused by arterial damage Slideshow Play

Insect leg Illustration Play

Methods of reproduction Slideshow Play

Movement Student activity Play

Physical effort and the heart Student activity Play

Reproduction Student activity Play

Reproduction Slideshow Play

The distance between the points Animation Play

The distance formula Student activity Play

The skeleton Student activity Play

The skeleton and vital organs Animation Play

Theorem – assumptions and claim Student activity Play

Theorem – assumptions and claim Whiteboard exercise Play

"Two hearts" during physical effort Animation Play