A weighty challenge

Today's maths challenge was to find an object that would balance Dougal dog, when we put it in the other bucket.

We know that when something is lighter it stays up, when something is heavier it goes down, and when something is the same weight the buckets will balance - be the same.

We all found something that would fit inside the bucket to try and balance Dougal dog...

These things nearly balanced Dougal dog - the buckets were both up, but not quite balanced:

And then Ti'a put her avocado into the bucket ... and it balanced!!!!!

We talked about some interesting things afterwards:

• The duster that Mrs Hawkins put in the bucket balanced Dougal dog AND Ti'a's avocado also balanced Dougal dog...so...the duster and the avocado should also be the same and balance each other. We checked it out and they did!
• Brooklyn's drink bottle nearly balanced Dougal dog when it had a little bit of water in it, but after he drank it, it didn't. Why was this? The water was making his bottle heavy.
  
• Did that mean that Jin would be able to do something to make his heavy drink bottle balance Dougal dog? YES...he could drink some of the water!