One of the easiest and least messy ways to make a pyramid with sugar cubes is to use a glue stick. Other methods call for white craft glue or an egg white mortar mixture. You may find, however, that there is more glue on your children or your fingers than on the sugar cubes. The mortar method can also be tricky, each layer must be perfectly level or the pyramid will be off balance. Using a glue stick is not only simple, it allows for easy repair or re-sticking should the sugar cubes separate.
Line up 10 sugar cubes in a row.
Cover one side of the first sugar cube with glue from the glue stick. Press the second sugar cube in the row against the side with the glue. Cover the opposite side of the second sugar cube with glue from the glue stick. Press the third sugar cube against the glued side of the second sugar cube. Continue down the row, gluing the sides of each sugar cube, one to the other.
Repeat Steps 1 and 2 nine more times. You will have a total of 10 rows with 10 sugar cubes in each row.
Run the glue stick down the back side of one row of sugar cubes. Press the second row against the first row. Repeat this step until all 10 rows are joined together to make a large square. Allow the glue to dry. This is the base for your pyramid.
Make and join nine rows of sugar cubes, each with nine sugar cubes in each row. Repeat Step 4 to join all nine rows together. This is the second layer of the pyramid.
Cover the top of the pyramid base with glue from the glue stick. Do not cover the outside rows. Center the second layer of the pyramid over the base.
Make layers of the pyramid with eight rows of eight sugar cubes, seven rows of seven sugar cubes, six rows of six sugar cubes, five rows of five sugar cubes, four rows of four sugar cubes, three rows of three sugar cubes and two rows of two sugar cubes.
Spread glue from the glue stick on top of each layer, always excluding the row around the outside edge. Center each layer on top of the last. Each successive layer should be made with rows containing one less sugar cube than the last layer.
Finish the sugar cube pyramid by gluing and centring one sugar cube on top.