How many such sequences are there? Whiteboard exercise Play

How many times more? Whiteboard exercise Play

How many times more? Whiteboard exercise Play

How many times more? How many times less? Student activity Play

How many times more? How many times less? Whiteboard exercise Play

How many times? Whiteboard exercise Play

How many times? Student activity Play

How many values define a polynomial? Student activity Play

How many were there? Whiteboard exercise Play

How many were there? Student activity Play

How many were there? Whiteboard exercise Play

How many were there? Student activity Play

How many were there? A more difficult problem Student activity Play

How much does it cost? How many kilometres? Student activity Play

How to write a number without too many zeros Student activity Play

In how many ways can it happen? Student activity Play

In how many ways can it happen? Whiteboard exercise Play

Linear equations with many solutions Student activity Play

Many different rectangles Student activity Play