K12 Crafter is an independent Pre K to Grade 5 learning program, led by math, with hands on lessons, science, read along stories, games and art in one app, plus printable math worksheet packs with answer keys.
This is the full scope of what it covers, so you can see whether it fits your child or your class.
The grade range
The learning app covers Pre K through Grade 5, roughly ages 4 to 11. The printable math worksheet packs cover Kindergarten through Grade 5.
Math, grade by grade
Pre K. Counting, comparing which has more, one more and one less, shapes, patterns, and comparing size and weight.
Kindergarten. Counting and number recognition, comparing groups, simple addition and subtraction within ten, basic shapes, and sorting.
Grade 1. Addition and subtraction within twenty, place value with tens and ones, counting to 120, measurement and length, telling time to the hour and half hour, and beginning data.
Grade 2. Addition and subtraction within 100 and beyond, place value to the hundreds, money, telling time to five minutes, measurement, and reading simple graphs.
Grade 3. Multiplication and division within 100, fractions on a number line, area and perimeter, rounding, telling time to the minute, and bar graphs.
Grade 4. Multi digit multiplication and division, equivalent fractions and operations with fractions, decimals, factors and multiples, angles, and line plots.
Grade 5. Operations with fractions and decimals, volume, the coordinate plane, powers of ten, and multi step word problems.
How it maps to the standards
The skills in K12 Crafter roll up to the same math domains schools use, including Counting and Cardinality (Kindergarten), Operations and Algebraic Thinking, Number and Operations in Base Ten, Number and Operations with Fractions, Measurement and Data, and Geometry. So progress maps to the standards you already teach, not just to a list of activities.
Beyond math
The app also has science children try for themselves, read along stories, games and an art studio, with something for every grade from Pre K to Grade 5.
Paper and screen together
From Kindergarten to Grade 5 you can mix the printable worksheet packs and the app freely, so a child can practice on paper on screen free days.
Where to start
The simplest way to see if a grade fits is to try it. You can grab free sample worksheets and answer a few real app questions at k12crafter.com before buying anything.



