Check out these websites:
Create a Timeline
http://www.softschools.com/teacher_resources/timeline_maker/
http://www.readwritethink.org/files/resources/interactives/timeline_2/
Carbon Footprint
meetthegreens.pbskids.org/features/carbon-calculator.html
Economics- profit, supply and demand: Lemonade Stand
www.coolmath-games.com/0-lemonade-stand
https://www.omsi.edu/exhibits/moneyville/activities/lemonade/lemonadestand.htm
Latitude and Longitude
www.abcya.com/latitude_and_longitude_practice.htm
North Carolina Research
mrnussbaum.com/united-states/north_carolina/