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- Find all the rectangles you can make with 18 tiles. Follow the directions from Questions 1 and 2 using 18 tiles.
- Your teacher will assign your group some of the numbers from 1 to 25.
- For each number, arrange that many tiles into rectangles in as many ways as you can.
- Then draw the rectangles on Square-Inch Grid Paper and cut them out. Write number sentences on each rectangle to match.
- Put your rectangles on a class chart.
- Use the class chart of rectangles to make a table, like the one at the right, of the multiplication sentences for each of the numbers 1–25. Use the Rectangles page in the Student Activity Book.