Maths

Recap what we've been learning about this week by dancing with Mr Pumpernickel. 
https://www.bbc.co.uk/teach/supermovers/ks1-maths-length-height/zdrx92p 

Today we are going to be measuring using a ruler. 

What do the numbers on the ruler mean? (1cm etc).
Where should we place the object to start measuring it?
Does the ruler look like anything else we have used? (number line)
Can you count how many cm the ruler measures? 
How does using a ruler help up to compare objects?