Six hundred skill-specific, standards-based math problems have multiple-choice, Hot Dot answers. Students touch theirHot Dots pen(sold separately) to a dot for instant feedback. Includes 300 full-color, double-sided cards divided into 25 color-coded skill areas (See Ways to Use for skills). Includes answer key, reproducible student-progress sheet and storage box with color-coded dividers. Additionalgrade levelsavailable (see Similar Products).