AA property of similar triangles Student activity Play

An interesting article Animation Play

An interesting formula to find the area of a polygon Student activity Play

An interesting formula to find the area of a polygon Whiteboard exercise Play

An interesting number Student activity Play

An interesting number Whiteboard exercise Play

An interesting result Whiteboard exercise Play

An interesting result Student activity Play

Enlargements with negative scales Student activity Play

Facts and assumptions Student activity Play

Facts and assumptions – algebraic expressions Whiteboard exercise Play

Facts and assumptions – algebraic inequalities Whiteboard exercise Play

Facts and assumptions – prime numbers Whiteboard exercise Play

Facts and assumptions – the sum of the numbers Whiteboard exercise Play

Interesting fact Animation Play

Interesting fact Animation Play

Interesting fact Animation Play

Interesting fact Animation Play

Interesting fact Animation Play

Interesting fact Animation Play

Interesting facts about the calendar Whiteboard exercise Play

Interesting facts about the calendar Student activity Play

Interesting information Animation Play

Interesting information Animation Play

Interesting parametric curves Animation Play