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The Subtraction cartridge is divided into 54 levels of difficulty, covering material generally taught in kindergarten through grade six. The program provides practice in subtracting whole numbers (numbers with no fractional part). Children begin subtracting one-digit numbers and advance level by level until they work problems involving five-digit numbers. Problems are presented both vertically and horizontally. At certain levels children practice "regrouping" ("borrowing") of numbers from one column to another.
The Subtraction cartridge offers several special features that increase its motivational and reinforcement value:
:■ Colorful, rewarding graphics and sound effects that appear in response to correct answers.
:■ An unintimidating, try-again approach to incorrect answers.
:■ A progress report posted at the bottom of the screen.
:■ Periodic reviews to maintain skill mastery.
:■ A "help" feature that displays the problem step by step until the final answer is found.
:■ Advancement to the next level if problems are answered correctly, or automatic return to a lower level if your child needs more practice.
:■ A special regrouping feature to help students understand the concept of borrowing from one column to another.
:■ Report screens personalized with your child's name at the end of each level's activities.
:■ An "Exit" screen with a complete report on your child's score at the end of the work session.
