Education ToolsetHow Math Word Problem Topic Router works
Press Load model once: your browser downloads Universal Sentence Encoder (MediaPipe) (13 MB) from this site and keeps it in its cache. Then add your text and press Classify locally. The model runs on this device, so nothing you enter is sent to a server. Until the model is loaded, or if your device cannot run it, the tool falls back to a simple keyword check and labels the result as the fallback.
Universal Sentence Encoder (MediaPipe) turns text into a list of numbers that captures its meaning, so two sentences about the same thing end up close together even when they share no words. Each label below comes with a handful of example phrases. The tool compares your text with every example and picks the label whose closest example is nearest in meaning.
Scores are the cosine similarity between your text and that closest example, rescaled to 0-100: this model rarely scores two English sentences below 0.6 even when they are unrelated, so 0.6 maps to 0 and an exact match to 100. When the top two labels are within 3 points the result says it is a close call, because the model is effectively unsure.
Labels and example phrases
- Rates, speed and work - Set up distance = rate × time, or combined work rates. Examples: "a train travels 240 miles in 4 hours, what is its average speed", "two painters working together finish a room in how many hours", "a pipe fills a pool at 50 liters per minute".
- Percentages and money - Percent change, discounts, tax, tips or interest. Examples: "a jacket costs $80 and is on sale for 25% off", "what is a 15% tip on a $42 restaurant bill", "the town population grew from 2,000 to 2,300, find the percent increase".
- Geometry and measurement - Area, perimeter, volume, angles or the Pythagorean theorem. Examples: "find the area of a rectangular garden 12 m by 8 m", "a circle has a radius of 5 cm, find its circumference", "how much fencing is needed to go around a square yard".
- Probability and counting - Chance of an outcome, or the number of arrangements and combinations. Examples: "a bag has 3 red and 5 blue marbles, what is the probability of drawing red", "when rolling two dice, what is the chance the sum is 7", "in how many ways can 4 students line up for a photo".
- Ratios and proportions - Set up equal ratios or scale factors. Examples: "the ratio of boys to girls in a class is 3 to 4", "a recipe uses 2 cups of flour for every 3 cups of milk", "on a map 1 inch represents 50 miles".
- Algebra: unknown numbers and ages - Name the unknown, write an equation, solve it. Examples: "Tom is three times as old as his son, in 10 years he will be twice as old", "the sum of two consecutive integers is 51, find the integers", "twice a number plus 7 equals 25, what is the number".