A few pieces of heavy 8 1/2 x 11 paper, such as card stock or construction paper
A pencil, marker or pen
Begin with an 8 1/2" x 11" pieces of construction paper or card stock. Card stock works best and easily obtained from any office supply store. You may also begin by using a manila filing folder. This maybe easier for very young pop-up makes (if using a manila filing folder skip to step 3).
Fold the construction paper in half to form a card.
Draw two parallel lines of equal height towards the fold of the card. The lines do not have to be perfect as long as they are the same height.
Cut along both lines starting at the folded edge.
Fold the cut section back...
...and crease well along the edge with your thumb or finger.
Put the cut strip back in its original position.
Open the card up like a tent.
Using your thumb, push the cut strip through to the other side of the card.