Ready for a secret? All you need to keep your 2.5-5 year old entertained for a LONG time is a retractable fabric (or vinyl) measuring tape! My son received a real metal one with a gift, but that one retracts too quickly and can easily cut those little hands that don’t know to be out of the way, so that one now lives in the garage. However, the measuring tape that I keep with my sewing supplies is a much safer substitute… and worth at least 15 minutes of fun all on his own!
If your little one doesn’t already know the magic of pulling out the tape, then pushing the “magic” button to make it retract, be sure to show him/her that first. This may be enough fun for the first go-round with the measuring tape!
Once your child is comfortable with how it works, let him/her play with it to “measure” things on his/her own. Ask your child how long his/her favorite toy is, or how tall his/her favorite chair is. Work together to discover how long his/her arm is, and how tall he/she is (doing this in front of a full-length mirror makes it a lot more concrete for young minds, and gives an opportunity to make some great funny faces while you’re at it).
This is a great chance to talk about numbers, recognize numbers, talk about what “half” means, compare numbers, etc.
You may even want to enlist your new measuring expert to “help” you determine if a piece of furniture or a toy will fit in a certain designated space. Ask your child to measure the item, then measure the space. Write down the numbers. Which one is bigger? Will it fit? If your child answers incorrectly, let him/her see if the item will fit by him/herself.
Posted by M 
