Skill updates

IXL is continually adding new skills and improving existing ones to offer fresh and exciting ways to learn. To accurately reflect the curriculum improvements, skill names and skill listings may be adjusted, but the permanent skill ID always stays the same. Use this page to discover new skills and find old favorites!

Math
Language arts
Science
Social studies
Spanish
Spanish language arts
Pre-K
Kindergarten
First
Second
Third
Fourth
Fifth
Sixth
Seventh
Eighth
Algebra 1
Geometry
Algebra 2
Precalculus
Calculus
Listing
Skill name and permanent skill ID
C.
→
C.7
Divide whole numbers: word problems CNW
D.
→
D.7
Evaluate powers with whole number, decimal, and fractional bases XXS
D.8
Checkpoint: Numerical expressions with exponents FW8
E.7
Evaluate numerical expressions with or without parentheses VG6
E.7
→
E.8
Evaluate numerical expressions involving whole numbers
→
Evaluate numerical expressions with parentheses or brackets MLU
E.8
→
E.9
Identify mistakes involving the order of operations V46
F.12
Checkpoint: Factors and multiples 6B2
J.3
Add, subtract, multiply, and divide decimals: multi-step word problems HXL
J.3
→
J.4
Evaluate numerical expressions involving decimals YEE
J.5
Checkpoint: Operations with whole numbers and decimals XMJ
L.
→
L.6
Multiply fractions greater than one using models ZVX
L.6
→
L.7
Multiply two fractions BNT
L.7
→
L.8
Multiply fractions: word problems 94H
L.8
→
L.9
Scaling whole numbers by fractions: justify your answer 9YZ
L.9
→
L.10
Scaling by fractions and mixed numbers H2T
L.10
→
L.11
Multiply three or more fractions and whole numbers KJF
L.11
→
L.12
Estimate products of mixed numbers 5BG
L.12
→
L.13
Multiply mixed numbers and whole numbers VUH
L.13
→
L.14
Multiply mixed numbers Z9M
L.14
→
L.15
Multiply mixed numbers: word problems 3P8
L.15
→
L.16
Multiply three or more mixed numbers, fractions, and/or whole numbers W5G
M.13
Checkpoint: Divide fractions 5M3
R.10
Checkpoint: The coordinate plane LMY
S.
→
S.1
Write a part-to-part ratio 8ZZ
S.1
→
S.2
Write a ratio using a colon 83K
S.2
→
S.3
Write a ratio using a fraction XZ2
S.
→
S.4
Write a ratio 77D
S.3
→
S.5
Write a ratio: word problems SBQ
S.4
→
S.6
Which model represents the ratio? 66V
S.5
→
S.7
Identify equivalent ratios 2LM
S.6
→
S.8
Write an equivalent ratio NEA
S.7
→
S.9
Ratio tables PPF
S.8
→
S.10
Equivalent ratios: word problems RLZ
S.9
→
S.11
Unit rates JSZ
S.10
→
S.12
Rates: word problems 9AF
S.11
→
S.13
Calculate speed, distance, or time: word problems TLB
S.12
→
S.14
Ratios and rates: complete a table and make a graph 6Z2
S.13
→
S.15
Use tape diagrams to solve ratio word problems YMD
S.14
→
S.16
Compare ratios: word problems 2HT
S.15
→
S.17
Compare rates: word problems NAF
S.16
→
S.18
Ratios and rates: word problems ZB9
S.17
→
S.19
Do the ratios form a proportion? LVW
S.18
→
S.20
Solve the proportion 7H5
S.19
→
S.21
Scale drawings: word problems UFW
S.22
Checkpoint: Ratio concepts 5T2
S.23
Checkpoint: Unit rates KE2
U.
→
U.2
Benchmark percents with strip models: multiples of 10, 20, 25, and 50 percent X6S
U.2
→
U.3
Benchmark percents with strip models: multiples of 10, 20, 25, 33, and 50 5JV
U.3
→
U.4
Convert fractions to percents using grid models ZDZ
U.
→
U.5
Convert between percents and fractions FGY
U.
→
U.6
Represent percents with grid models, decimals, and fractions YZD
U.4
→
U.7
Convert between percents, fractions, and decimals ZAV
U.5
→
U.8
Convert between percents, fractions, and decimals: word problems 7CZ
U.6
→
U.9
Compare percents to each other and to fractions GBY
U.7
→
U.10
Compare percents and fractions: word problems 9C8
V.12
Checkpoint: Percents FP9
AA.
→
AA.13
Solve one-step equations with decimals and fractions 5UU
AA.13
→
AA.14
Solve one-step addition and subtraction equations: word problems 35Q
AA.14
→
AA.15
Solve one-step multiplication and division equations: word problems GMV
AA.15
→
AA.16
Write a one-step equation: word problems YVX
AA.16
→
AA.17
Solve one-step equations: word problems BXY
AA.17
→
AA.18
Which word problem matches the one-step equation? WYQ
AA.18
→
AA.19
Solve one-step equations involving integers 7JV
AA.20
Checkpoint: Understand and solve equations DEJ
BB.8
Checkpoint: Inequalities RTK
BB.9
Checkpoint: Solve one-step inequalities NYC
CC.7
Solve word problems by finding two-variable equations
→
Relationships between two variables: word problems UJQ
CC.13
Graph a two-variable equation
→
Graph a relationship between two variables TJA
II.1
Create line plots
→
Create dot plots 5HD
II.2
Interpret line plots
→
Interpret dot plots M5Y
II.3
Create and interpret line plots with fractions
→
Create and interpret dot plots with fractions QZP
II.4
Create frequency charts
→
Create frequency tables W8X
JJ.11
Describe distributions in line plots
→
Describe distributions in dot plots RZL
KK.
→
KK.1
Sample spaces of simple events PX6
KK.1
→
KK.2
Counting principle GDJ
KK.2
→
KK.3
Probability of one event Q2X
KK.3
→
KK.4
Make predictions CFS
KK.4
→
KK.5
Probability of simple events and opposite events BZH