An estimate is a good guess. Working with estimations is a great way to play with numbers and work on those logical reasoning skills. I think Avery will love math & science when she gets older, she likes rules and getting answers, so she liked this activity.
We started with estimating how many cups of sand it would take to fill a pitcher. She guessed 100 scoops, we found it was actually 18. She began to get the hang of it, I think, the last one she did she estimated (guessed) correctly!
We used different sized cups & containers for comparing.
How many steps will it take you to walk across the driveway?
How many times can you hop in 10 seconds?
How many goldfish crackers will it take to fill this bowl?
How many blocks can you stack before the tower falls?