Hidden Safari

The project shown above is from an activity called "Hidden Safari". I enjoyed this activity, even as a college student. For the activity, you draw an object in light blue colored pencil, which is a cool color. Then, you take any colored warm crayon (red, yellow, orange) and create  multiple designs on top of the blue color. This makes it difficult to see the blue colored pencil from far away. You then make "magic goggles" that can help see the blue image. 
Kids will love this activity. A teacher can incorporate this into the classroom during an animal unit or make other objects from it. This activity has endless opportunities for incorporation into the classroom.