Engage students in science exploration from the inside out with these 16 detailed images. Children can examine the photos and then place them on a light table or in a window to reveal the skeletal system beneath. Flip the cards over to get a better look at the skeleton. Compare and contrast the image of the human to the walrus, giraffe, snake or owl. 16 animal x-rays including 2 human images. Cards are 220 x 280mm. Includes teaching guide.