Shapes in graphic calculators Student activity Play

Structure and naming of carboxylic acids Student activity Play

Structure and properties of sugars Student activity Play

Structure of glucose and fructose Animation Play

Sum of angles in a quadrilateral Animation Play

Sum of angles in quadrilaterals Student activity Play

Sum of the angles in a cyclic quadrilateral Animation Play

Sum of the angles in a quadrilateral Simulation Play

Sum of the angles in a quadrilateral – proof Animation Play

Symmetry in the coordinate system with respect to the point (0, 0) Whiteboard exercise Play

Symmetry in the coordinate system with respect to the point (0, 0) Student activity Play

Test your knowledge about angles Student activity Play

Test your knowledge about angles Whiteboard exercise Play

The angles of a polygon Student activity Play

The angles of a polygon Whiteboard exercise Play

The angles of a quadrilateral Animation Play

The angles of a quadrilateral Student activity Play

The area of a quadrilateral Whiteboard exercise Play

The area of a triangle Student activity Play

The area of the quadrilateral Whiteboard exercise Play

The exterior and interior angles of a quadrilateral Whiteboard exercise Play

The light phase is dependent on light Student activity Play

The missing angle in a quadrilateral Whiteboard exercise Play

The missing angle of a quadrilateral Whiteboard exercise Play

The sum of the angles in a quadrilateral Simulation Play