Viruses Class activity Play

Viruses Whiteboard presentation Play

Viruses live only at the expense of others Student activity Play

Viruses – their discovery and characteristics Student activity Play

Walking ostrich Whiteboard exercise Play

What is enlargement? Student activity Play

What is the missing number? Student activity Play

When a function changes sign Student activity Play

Why are negative numbers necessary? Student activity Play

Why are they products? Animation Play

Work and the time necessary to perform it – part 1 Student activity Play

Writing as a fractional exponent Whiteboard exercise Play

Writing in the form of algebraic expression Whiteboard exercise Play

Writing on the computer Animation Play

Written methods Whiteboard presentation Play

Written methods Whiteboard presentation Play

Written methods Whiteboard presentation Play

Written methods Class activity Play

Written methods Class activity Play

Written multiplication and multiplying decimals Whiteboard exercise Play

Zeros of a function Whiteboard presentation Play

Zeros of a function Class activity Play

 When a function changes sign Whiteboard exercise Play

 When a function does not change its sign Animation Play

 Written multiplication Animation Play