In this activity, students design a shelter to act as an insulator, protecting a polar bear’s home from “global warming” (simulated by room temperature or a lamp). Learning Objectives (National Curriculum Links) Science: Identify and compare the suitability of a variety of everyday materials for particular uses. Design & Technology: Design purposeful, functional, appealing products based on a design criteria. Maths: Use standard units to measure time and temperature (basic comparison).