This is a great project for G+T students in fifth and sixth grade. Variations I have done include working individually and letting the students choose anywhere in the world they would like their country to be. The geography and climate of their portion of the earth affects the other aspects, such as history, customs, foods, etc.
Science games are great ways to increase collaboration to learn facts about weather. These games are best used in groups of 2- 4 people and can be used during a guided practice or review portion of a lesson plan. The only materials needed are the games, dice, and/or a spinner/pencil.
Fifth grade Common Core project based learning for social studies. Pumpkin globe project. Different colored yarn for equator, prime meridian, Tropic of Cancer, Tropic of Capricorn, longitude/latitude. Label climate zones and hemispheres, as well as oceans. Create map key and a compass rose to display with the globe. Finally, create a business card for the members of the cartography team.