DIY Lung Model - I like that this model uses two balloons instead of just one.
Do with wooden crates from Michael's instead. ;)
A First Grade Journey: DIY Crate Bench
Math Workstation Freebies
Good quiet activity for addition, subtraction, multiplication, or division.
Spill the beans - Simple addition math game that build addition fluency.
I've used a rubber band, stretching it each time we expand the sentence until we can stretch it no more (add verbs, adjectives, and adverbs)." - Really like the rubber band idea!
Robot Rolling into Addition Freebie