Free math games, in the order they should be taught
Number sense through fifth-grade fractions, sequenced so each rung opens when the ones below it are solid. Concrete first, then pictures, then symbols — and fractions on a number line, not only in pies.
Kindergarten
See it without counting: 1-5
K.CC.B.4
See it without counting: 6-10
K.CC.B.5
Numerals and names to 20
K.CC.A.3
Which is more?
K.CC.C.6
Number bonds to 5
K.OA.A.3
Number bonds to 10
K.OA.A.3
Add and subtract within 5
K.OA.A.5
Teen numbers are ten and some more
K.NBT.A.1
Grade 1
Add and subtract within 10
1.OA.C.6
Making ten
1.OA.C.6
Doubles and near doubles
1.OA.C.6
What does = really mean?
1.OA.D.7
Missing numbers
1.OA.D.8
Add and subtract within 20
2.OA.B.2
Place value to 100
1.NBT.B.2
Story problems: start unknown
1.OA.A.1
Grade 2
Add and subtract within 100
2.NBT.B.5
Place value to 1000
2.NBT.A.1
Equal groups and arrays
3.OA.A.1
Grade 3
x2, x5, x10
3.OA.C.7
x3 and x4
3.OA.C.7
x6, x7, x8, x9
3.OA.C.7
Division is multiplication backwards
3.OA.B.6
Unit fractions on a number line
3.NF.A.2
Counting unit fractions
3.NF.A.1
Grade 4
Equivalent fractions
4.NF.A.1
Comparing fractions
4.NF.A.2
Adding fractions with the same bottom
4.NF.B.3
Big multiplication with the area model
4.NBT.B.5
Decimals to hundredths
4.NF.C.6