Billiard ball collisions and the velocity vectors Student activity Play

Building a quadrilateral Simulation Play

Calculating the area of a polygon Student activity Play

Circle inscribed into a parallelogram Simulation Play

Construction of a parallelogram Simulation Play

Decomposition of vectors Student activity Play

Determining angles Whiteboard exercise Play

Drawing a parallelogram Whiteboard exercise Play

Drawing a parallelogram and calculating its area Whiteboard exercise Play

Figures in coordinates – part 2 Student activity Play

Finding the vertices of a parallelogram Whiteboard exercise Play

Five billiard balls collisions Whiteboard exercise Play

Inscribed circles, circumscribed polygons Student activity Play

Isosceles trapeziums Simulation Play

Maximum and minimum forces Simulation Play

Maximum and minimum forces Student activity Play

Opposite angles of a parallelogram Animation Play

Other quadrilaterals Student activity Play

Parallel lines Whiteboard exercise Play

Parallel lines Student activity Play

Parallelogram Whiteboard exercise Play

Parallelogram method Animation Play

Parallelogram method Animation Play

Parallelogram principle Animation Play

Parallelograms and rectangles Simulation Play