Have students compare different map projections. Which is best for seeing the shapes of the land?ДЈ.Ask: What is the relationship between lines of longitude and the black lines (cuts) on the map? (The cuts are all made along lines of longitude.) What is the relationship to the Equator? (Cutlines stop at the Equator.) Have each member of each group work with one page to cut and tape together a model, attempting to make a globe from the maps. Have groups study these versions of the globe. Give each group one copy of the 3-page worksheet Map to Globe: 2-D to 3-D Models, scissors, and transparent tape. Have students create globes from different maps.Дivide students into small groups of three. Tell students they will next test the reverse, changing from a flat map to 3-D.Дў. Ask: What happens to the Earth when itвЂ™s flattened in this way? (Responses will vary students should recognize that itвЂ™s difficult to flatten it without splitting it into pieces or having several finger-like projections coming from a center.) Show the video, The Cartographer's Dilemma, to introduce the challenges that cartographers face with representing Earth on a flat surface.

Have them imagine this is the surface of Earth or a globe. One at a time, place the peels on an overhead projector and discuss the shapes as a whole class. Ask them to peel the orange, trying as best they can to keep the peel in one piece. To demonstrate the challenge of moving from 3-D to 2-D with a sphere, invite 4-6 volunteers to the front of the room and give each a navel orange or other type of orange that is easily peeled.

Demonstrate the challenge of transferring a spherical surface to a flat surface.Д®xplain that cartographers and others needing flat maps for practical uses have long been challenged to show Earth, a three-dimensional sphere, on a flat, two-dimensional plane.

Best map type civ 6