These are some good examples of estimating games. See if you can think of some more. Measuring The kitchen is a great place to start learning measuring skills. The more you involve your child in baking, the more she will learn. Keep a record of your child's height and weight, this is a great ongoing project.
Laundry is a good place to sort also.
Your child can separate the clothes into piles of colors, and into stacks of ownership when they are clean. Ordering Talk about the sequence of events for the day with your child. Chances are she will know the schedule better than you. You can arrange pillows or stuffed toys from smallest to largest. This is a great way to make a difference in your child's science education future, put it on paper.