Spring and 2nd semester means a deviation from the basic number operations that rule the beginning of the school year. I feel like we relax a little on those "skill and drill" addition and subtraction skills and get to have a little more fun!
What student doesn't love rulers. If you let them have them in their desks they're quickly toys and often go flying across the room :) Measurement stations and centers are one of my favorites to teach. Mostly because kids love to measure anything and everything in sight so as long as you don't pass out those rulers too soon the kids are completely engaged!
I had some fun putting together some ruler clipart as well as some task cards for measurement centers. The packet has 16 pages of activities.