New census data show working-class whites now make up less than half of Ohio’s eligible voters, a demographic change that has both parties expanding their efforts to reach other voters.
Recovering Ice Cores
How scientists look at samples of ice to determine past climates/atmospheric conditions.
Technological design is a critical component of many scientific ventures. This lesson challenges students to design a device that keeps an ice core frozen for 24 hours. After watching the video, students design and test an ice storage unit that keeps the ice frozen for 24 hours. Throughout the design process student teams share and critique their plans.
Download teacher’s guide (PDF, 114K)