Parent guide

How to choose units to practice using accuracy by unit

Instead of deciding “What should we do today?” by feel, choose based on what your child actually solved. Here is how to read accuracy, what to watch out for, and examples of deciding the next unit to practice in different situations.

1. Look at accuracy unit by unit

Accuracy is the share of solved problems your child got right. A single overall score hides differences like “good at addition but often wrong in subtraction.” Looking unit by unit shows where more practice is needed.

Kids Math: Elementary Practice collects the problems you grade by unit, calculates the accuracy, and shows it in three bands.

  • Good90% accuracy or higher
  • Average70-89% accuracy
  • Weakbelow 70% accuracy

Choose your child in the app's Progress tab to see, for each unit, the number of problems right, the number solved, and the accuracy, grouped into weak, average, and good areas. When you choose units in the Create tab, the unit cards carry the same labels, so you can pick weak units right away.

Accuracy is calculated from the first grading. Results from “Retry Wrong Answers” are recorded separately and do not change a unit's accuracy.

2. Read carefully when only a few problems have been solved

In a unit with only 5 problems solved, one problem can change the band. 4 right out of 5 is 80%, which is Average; 3 right is 60%, which is Weak. That day's mood or a single slip counts for a lot.

Decisions are steadier once about 15 to 20 problems have built up in each unit. In the Progress tab, always look at the number of problems solved together with the accuracy.

3. Deciding the next practice for each band

SituationNext practice
There is a Weak unitFill about half of the day's problems with that unit, and mix in units your child is good at for the rest to keep it manageable.
Many units are AverageFirst look at the wrong answers on the grading screen and sort out whether they are simple slips or the method is not understood. If the method is not understood, treat it like a weak unit.
Most units are GoodMove on to the next unit in the same level or to the next level. Mix in a few problems from finished units now and then so they are not forgotten.
A unit has stayed Weak for more than 2 weeksCheck the unit just before it (the foundation unit). See the examples below.

4. If a unit stays weak, check its foundation unit

When a child keeps getting stuck in the same unit, the cause is often something learned earlier. For example:

  • Lv.6 “2-digit subtraction” is weak → check whether the step before borrowing, such as Lv.5 “Subtract from ≤25”, is shaky. (Subtraction with borrowing)
  • Lv.7 “Division basics · Remainders” is weak → look at the accuracy for “Multiplication tables” first. Division uses the times tables in reverse. (Division with remainders)
  • Lv.8 “Add, subtract & simplify fractions” is weak → review numerators and denominators with “Fraction basics”, and if simplifying is the sticking point, practice the times tables too. (Fractions)

5. An example worksheet in the app

For example, if “2-digit subtraction” is Weak and “2-digit addition” is Good, you could set it up like this.

  1. In the Create tab, tap Lv.6 under 📚 Select Level. The unit cards show Weak, Average, and Good labels.
  2. Under 📖 Select Unit, choose both “2-digit subtraction” and “2-digit addition” (you can choose more than one).
  3. Set the number of problems on the unit cards, such as 6 subtraction and 4 addition, choose your child under 👶 For whom?, and create the problems.
  4. After 1 to 2 weeks, check in the Progress tab how the accuracy and the number solved for the subtraction unit have changed, and adjust the mix.

Check your child's weak units by accuracy

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