Focal length and the shape of a lens Whiteboard exercise Play

Focal point and focal length Animation Play

Focusing of rays Student activity Play

Focusing of rays Simulation Play

Formula for the height of the equilateral triangle Animation Play

Formulas Student activity Play

Frames for photos Animation Play

Frequency density polygon Animation Play

Frequency density polygon Student activity Play

Frequency of free oscillations Animation Play

Fresnel lens Animation Play

From Imperial units of length to metric units of length Whiteboard exercise Play

Functions in real life Student activity Play

Geometric problems Student activity Play

Guessing the result Animation Play

Half-planes in the Cartesian coordinate system Student activity Play

How do you measure the length of a curve? Student activity Play

How many times? Whiteboard exercise Play

How many times? Student activity Play

How much do we have to pay? Student activity Play

How plants receive and transform information about day length Animation Play

How to construct a regular hexagon Animation Play

How to measure gravitational acceleration? Slideshow Play

How to measure gravitational acceleration? Student activity Play

How to measure gravitational acceleration? Whiteboard exercise Play