Line parallel to a vector through a given point Student activity Play

Line parallel to a vector through a given point Whiteboard exercise Play

Line through two given points Whiteboard exercise Play

Line through two given points Student activity Play

Migration of ions through a liquid electrolyte Animation Play

Passage of water through a plant Animation Play

Passage of water through a plant Animation Play

Pathway of sperm cells through the female reproductive system Animation Play

Section through a bone Illustration Play

Section through intestinal epithelium tissue Illustration Play

Sections through a stem; root and leaf Whiteboard exercise Play

Stages of water transport through a plant Animation Play

Structure of the heart and blood flow through the heart Student activity Play

Structure of the heart and blood flow through the heart Whiteboard exercise Play

Symmetry with respect to a line and rotation through 90° Student activity Play

Symmetry with respect to a line and rotation through 90° Whiteboard exercise Play

Tangent to a circle through a point not on the circle Student activity Play

Tangent to a circle through a point not on the circle Whiteboard exercise Play

The equation of a circle going through a point Student activity Play

The equation of a circle through a point Whiteboard exercise Play

The equation of a line going through two points Whiteboard exercise Play

The equation of a line going through two points Student activity Play

The flow of charge through a conductor Animation Play

The flow of charge through an insulator Animation Play

The flow of chemical energy through the food chain Animation Play