Lots of good math ideas like this one, Using cotton swabs to paint ten frames and twenty frames and SO MANY MORE GREAT IDEAS on how to build number sense in First Grade and Kindergarten with a lot of pictures! Must read!
Learning on the go- for the car trip- write letters, shapes, or words on a paper plate edge and cut between each one. As they find the letters etc on signs or around town they get to fold it down. - would be FRER for a scavenger hunt too!