Explain that we're going to study the inside & outside of an object.
Demonstrate using oil pastels:
Mixing/blending colors.
Using scratch paper to test colors.
Using pencils to scratch through the pastels to create textures.
Have students select an interesting view to draw the object;
drawing the outside first on one sheet.
Next have students share what they think the insides will look like.
Then cut the object in half and have the students draw the inside on another
sheet of paper. (You may want to practice cutting the fruit/veggie before class if the object is new to you)
Once completed, have the students mount their two drawings together, side by side.
As a class discuss the differences between the inside and the outside.
More Information:
Still Life Artists
http://www.artcyclopedia.com/subjects/Still_Life.html
KinderArt® Lesson/Activity 
