Question

how to make kaleidoscope tell as experiment​

Answer 1

This pic may help you for your answer.

Answer 2

Cut two triangles of a transparent substance, like a plastic overhead transparency, to fit the other end; tape up two of the edges to form a three-sided envelope, and put candy sprinkles and/or bits of colored paper inside. Tape the third side closed, then use tape to attach the envelope to the end of the kaleidoscope.