Congruent triangles Whiteboard exercise Play

Congruent triangles Simulation Play

Congruent triangles Animation Play

Congruent triangles Animation Play

Congruent triangles Animation Play

Congruent triangles Student activity Play

Congruent triangles Student activity Play

Congruent triangles – solving problems Student activity Play

Constructing a congruent angle Animation Play

Corresponding segments and angles – reflection Animation Play

Corresponding segments and angles – rotation Animation Play

Density Whiteboard exercise Play

Density Student activity Play

Determination of object size using the light microscope Student activity Play

Determination of object size using the light microscope Whiteboard exercise Play

Dividing an equilateral triangle into nine congruent triangles Whiteboard exercise Play

Eclipses Student activity Play

Eclipses Animation Play

Emmanuel's kite Animation Play

Enlargement Student activity Play

Fingerprints Animation Play

Flowers problem Animation Play

Getting an object to move Illustration Play

How do we enlarge the shape? Animation Play

How to check directly whether two triangles are congruent Whiteboard exercise Play