An Arithmetic Tutor Design and implement a program that helps a third grade student to learn his/her multiplication tables. The program should display a table such as the table in Figure XXXXXXXXXXTo...

An Arithmetic Tutor

Design and implement a program that helps a third grade student to learn his/her multiplication tables. The program should display a table such as the table in Figure 20.12. To practice multiplication, the student clicks on a cell and types the product of the row value and the column value. At any time, he/she can press a Check button, and all correct answers are displayed in bold black, while incorrect answers are displayed in red. Empty cells are left empty. There should also be an Answers button that, when clicked, fi lls in all the answers in bold black.

Figure 20.12

The student can vary the range of digits that appear in the table, one range for the rows and one for the columns. In Figure 20.12, the row range is 2 to 3 and the column range 1 to 4.