The PVC end cap will fit the tube tightly, so hit the end cap with the flat of your hand to be sure the end cap is completely on the tube.Place the PVC end cap onto the PVC tube.Insert two more pieces into the remaining spaces in exactly the same manner.

Insert a one-inch piece of foam cord into the empty place between two points of the triangle.Compress the weather stripping slightly to make it fit.Insert the mirrors, weather stripping down, into the PVC tube.The three pieces of weather stripping should present a uniform appearance when placed correctly. Add two more pieces of weather stripping, one to each empty side of the triangle.Remove the backing from a piece of weather stripping and place it on one side of the triangle, approximately one inch from one end.When securely and neatly taped, the mirror triangle will not wobble. Students may want to work in pairs for this, one student to hold the mirrors and another student to wind the tape. Wind transparent tape around the triangle, approximately 1/2 inch from each end.Line up the corners to form an equilateral triangle.Gently and carefully fold the mirrors into a triangle, shiny sides in.Gather the mirrors in your hands, long edges together.For each kaleidoscope, remove the protective film from the faces of three mirrors.Glue the bottoms of the petri dishes onto the PVC tubes.Cut the foam rope into one-inch pieces.Cut the adhesive-backed foam weather stripping into one-inch pieces.Drill holes in the center of the PVC end caps.Cut the PVC pipe into 7 7/8-inch tubes.With the name of your school or organization About one roll for every five kaleidoscopes

Kaleidoscope toy