Make your square 7. 7 by 7. 7 centimetres (3. 0 by 3. 0 in) to create a scale model of the Great Pyramid! Every 1 centimetre (0. 39 in) will represent 30 metres (98 ft) of the pyramid.
For the Great Pyramid scale model, place each line 3. 85 centimetres (1. 52 in) in from the corner of each side, and make it extend 6. 2 centimetres (2. 4 in) out from the square. If you’re not building the scale model of the Great Pyramid, you have to draw each line so that it’s big enough to meet the other faces of the pyramid in the center. To be safe, make each line at least the same length as a single side of your square.
You should now be looking at 4 triangles that share a base with the 4 sides of your square. For the scale model, each connecting line should be 7. 3 centimetres (2. 9 in).
You can fold each face so that it lays flat in the center before folding the next section if you want to get each side out of the way. This may make folding much easier.
Press your tape down slowly and delicately. There’s nothing but air inside your pyramid, and you don’t want to crush it while you’re taping it.
While you certainly want to cover each side of your pyramid, avoid using heavy globs of glue. You don’t want to weigh your pyramid down and ruin the paper.
To make a medium-sized pyramid, make each triangle 8 inches (20 cm) wide and 12 inches (30 cm) tall from the center.
If your cardboard is too thick to be cut with scissors, put a cutting board down and lay each piece of cardboard flat. Use a utility knife to cut each triangle out by dragging it through the cardboard along each section of your outline.
Hold your 2 sides still for 45-60 seconds to give your glue time to initially dry. Set your 2 pieces aside and leave them for 10-20 minutes to let the glue fully set.
After you put glue along the 2 remaining edges, lightly press your pieces together for 30-45 seconds to keep any gaps closed as it dries.
For a medium-sized pyramid, a good base is 14 by 14 inches (36 by 36 cm).
Don’t forget about the base! Spread a lot of glue around your base so that the sand can fully cover it.
If you want more of the bricks that you drew to show through, you can scrape sections of your pyramid with your knife or popsicle stick to knock some of it off.
You can use a Styrofoam tray or wood surface as a base if you prefer. You’ll need 140 cubes for a 7x7 pyramid.
Save time by setting your layer out on a separate plate and transferring it over by pinching an entire row between two fingers.
Do not leave cubes out of the middle of a layer or you’ll risk breaking your pyramid. You can use glue and glitter, sand, or paint to cover your cube if you’d like.
