Home › Activity Library › Activities about HSA/CED.A.2 Topic Activities about HSA/CED.A.2 Search 1 activity Topic: HSA/CED.A.2 × Browse full library → Alarming ice cracks on Brunt Ice Sheet in Antarctica A new, fast-growing ice crack is forcing the Halley VI British research station in Antarctica (shown above) to be moved. Fear of a huge break-off from the ice... Algebra Number Sense Grades 6–HS