16 double-sided photo/x-ray cards Engage students in science exploration from the inside out! We've printed 16 beautiful animal images on the front of plastic sheets. The images are protected with a special, scratch-resistant coating. Examine the photos and then place them on a light table or in a window to reveal the skeletal system of the animals! It's an excellent way to introduce students in all grades to animals and anatomy. 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, owl, etc. 16 animal images including 2 human images. Cards are 8 1/2 x 11" (22 x 28 cm). Includes teacher guide.