No, this pictures isn't a scientific model used to students can see the inner workings of a frog. This is a glass frog, which has a translucent abdomen.
Glass frogs are found in Central America and South America. They are small frogs, ranging just 1.2 to 3.0 inches in length. From above, they have a lime green color and look like most other frogs. It's only from the bottom that they're amazing see-through skin can be see.