Are you teaching place value? I just posted a really fun activity that takes students back to the days of George Washington that will reinforce the place value system in a really fun way and it's perfect to use at Thanksgiving time!
This set is super fun to use for use right before Thanksgiving and really, anytime is good for this challenging open-ended week of lessons. I designed this for grades 4-6. After an initial lesson on trading 12 pence for 1 shilling and trading 20 shillings for 1 British pound, this would be a great math center activity.