Things You'll Need
12-by-12-inch piece of cardboard
Nomadic people traditionally use igloos as temporary shelters from the cold in arctic environments. They cut snow and pack it together in block formation. They then stack the blocks in a dome shape pattern to create the shelter. You can make a model igloo indoors using sugar cubes, cardboard and white icing.
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Paint a 12-inch square piece of cardboard white using acrylic paint. Allow the paint to dry.
Make a 7-inch diameter circle in the center of your cardboard base with a compass.
Place a layer of sugar cubes around the circle. Apply some white icing to the bottom of the sugar cubes and use the icing as a glue to hold them to your base. The sugar cubes should be spaced slightly apart. You do not need them touching. Leave a 1-inch gap on one side of the circle for the entrance.
Place a second layer of sugar cubes on top of the first. Use white icing on the bottom of the cubes to glue them to the first layer. Stagger your placement on the second layer so that they are offset from the first layer, laying across the gaps you left in the first row. Again, leave the gap for the entrance.
Repeat Step 4 three more times to add a third, fourth and fifth layer. Offset the sugar cubes as you build, using icing to glue them together.
Add a sixth layer of sugar cubes. This time, not only off set the sugar cubes on the lower layer, but also move the sugar cubes slightly toward the center of the circle. This will cause the dome shape to begin to form. Use icing to glue the sugar cubes in place. This time do not skip the 1-inch gap. Use icing on the side of the cubes to cover this gap.
Repeat Step 6 three more times to create a seventh, eighth and ninth layer of sugar cubes.
Cut a piece of cardboard to match the size opening that remains in the top of your igloo. Since your final layer of sugar cubes will not close the top of your igloo, you will use the cardboard for this. Place the cut out piece of cardboard over the opening and glue it in place with frosting.
Cover the cardboard you placed in the prior step with icing. Use the icing to attach sugar cubes to the cardboard to finish the igloo. Allow it to dry completely.