Or search by topic
You need to find a collection of jars and bottles of different sizes and shapes, like those in the picture below:
I wonder which holds the most/least liquid?
Use estimation first of all.
How could you find out? Explore!
Can you find a way of counting how many "small container-fulls" each will hold?
Can you find a better way?
Having done that you might like to more on to Bottles 2
Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?