How many different rectangles can you make using 16 square tiles? 1. Use 16 square tiles to build rectangular arrays with different side lengths. Stop and Think: Do all the rectangles look the same? How are they alike? How are they different? 2. Fill in the chart for each rectangle you created. 3. Use to explain what you noticed about the shape of the rectangles and the total area of each rectangle. 4. Tap to add to your portfolio.