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How to build a pyramid for school 
Gather your supplies. 
This cardboard pyramid looks like a realistic flat-sided pyramid, but it's lightweight and doesn't take very long to put together. You probably have most of the supplies on hand already.
Select from the following. 1). For this project you will need : A large flattened cardboard box or piece of cardboard ruler pencil scissors hot glue gun and sticks brown or black permanent marker white school glue paint brush sand Cut out a cardboard square. Cut out a square of cardboard that is 14 inches (35.5 cm) by 14 inches (35.5 cm).. 2). The size of the pyramid varies by school. Ultimately, you want it to be at least 16 inches wide and 4 inches deep.. 3). Start by attaching some pushpins or nail if you want to attach to the top of your pyramid. You can skip this if you don't want to build a pyramid at all.. 4). To build a pyramid, grab a piece of cardboard that is at least 3.5 inches (1 cm) by 3.5 inches (1 cm) long. Lay the cardboard straight across the base of your pyramid..
1).