Colored disks to learn place value concepts visually and interactively. FEATURES 1. Whole numbers from 1 to 1,000,000 2. Decimals to 0.001 3. Combine and break apart (with animation) 4. Place value mat 5. Subtraction mat 6. Display or hide counts MATH TOPICS 1. Place Value 2. Comparing Multi-digit numbers 3. Adding large numbers 4. Introducing decimals 5. Comparing decimals 6. Adding decimals 7. Subtracting decimals