The world of our senses
Look at the four pictures and answer the question below each picture.
Picture 1 : What can you see in this picture?
   If we look at the white part, we can see a vase. If we look at the black part, we can see two faces.
Look at the four pictures and answer the question below each picture.
Picture 2: How would you judge the length of        the two lines?
   We can use a ruler to measure the two lines. Or we can use two pieces of paper to cover both ends of the two lines.