The numbers on the vertical axis Whiteboard exercise Play

The origin and registration of seismic waves Student activity Play

The origin and registration of seismic waves Whiteboard exercise Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The possible measures of the other angles Whiteboard exercise Play

The ratios of more than two quantities Student activity Play

The set of commands Whiteboard exercise Play

The sides of isosceles triangles Student activity Play

The sides of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The sine – reducing angles Whiteboard exercise Play

The sine – reducing angles Student activity Play

The size of the angles Whiteboard exercise Play

The sum of the angles in a polygon Student activity Play

The sum of the angles in a polygon Whiteboard exercise Play

The sum of the angles in a quadrilateral Simulation Play

The sum of the angles in a triangle Animation Play

The sum of the angles in an octagon Whiteboard exercise Play

The sum of the angles in the polygons Whiteboard exercise Play

The sum of the angles in the quadrilateral Whiteboard exercise Play

The sum of the angles in the triangle Whiteboard exercise Play

The sum of the angles in the triangle Animation Play

The sum of the exterior angles Animation Play

The sum of the exterior angles Student activity Play

The sum of the exterior angles Simulation Play