Browse All - National Council of Teachers of Mathematics

Browse All

Filter by:
Type Topic by Grade

Select Type

Lesson Plan
Unit / Collection of Lessons
Web Interactive
Problems
Problems of the Week
Success Story

Select Topic by Grade

Pre K to 2nd

3rd to 5th

6th to 8th

9th to 12th

Pre K to 2nd
Kindergarten
Algebraic Thinking
CCSS.Math.Content.K.OA.A
CCSS.Math.Content.K.OA.A.1
CCSS.Math.Content.K.OA.A.2
CCSS.Math.Content.K.OA.A.3
CCSS.Math.Content.K.OA.A.4
CCSS.Math.Content.K.OA.A.5
Counting & Cardinality
CCSS.Math.Content.K.CC.A
CCSS.Math.Content.K.CC.A.1
CCSS.Math.Content.K.CC.A.2
CCSS.Math.Content.K.CC.A.3
CCSS.Math.Content.K.CC.B
CCSS.Math.Content.K.CC.B.4
CCSS.Math.Content.K.CC.B.4a
CCSS.Math.Content.K.CC.B.4b
CCSS.Math.Content.K.CC.B.4c
CCSS.Math.Content.K.CC.B.5
CCSS.Math.Content.K.CC.C
CCSS.Math.Content.K.CC.C.6
CCSS.Math.Content.K.CC.C.7
Geometry
CCSS.Math.Content.K.G.A
CCSS.Math.Content.K.G.A.1
CCSS.Math.Content.K.G.A.2
CCSS.Math.Content.K.G.A.3
CCSS.Math.Content.K.G.B
CCSS.Math.Content.K.G.B.4
CCSS.Math.Content.K.G.B.5
CCSS.Math.Content.K.G.B.6
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.K.MD.A
CCSS.Math.Content.K.MD.A.1
CCSS.Math.Content.K.MD.A.2
CCSS.Math.Content.K.MD.B
CCSS.Math.Content.K.MD.B.3
Number & Operations
CCSS.Math.Content.K.NBT.A
CCSS.Math.Content.K.NBT.A.1
Grade 1
Algebraic Thinking
CCSS.Math.Content.1.OA.A
CCSS.Math.Content.1.OA.A.1
CCSS.Math.Content.1.OA.A.2
CCSS.Math.Content.1.OA.B
CCSS.Math.Content.1.OA.B.3
CCSS.Math.Content.1.OA.B.4
CCSS.Math.Content.1.OA.C
CCSS.Math.Content.1.OA.C.5
CCSS.Math.Content.1.OA.C.6
CCSS.Math.Content.1.OA.D
CCSS.Math.Content.1.OA.D.7
CCSS.Math.Content.1.OA.D.8
Geometry
CCSS.Math.Content.1.G.A
CCSS.Math.Content.1.G.A.1
CCSS.Math.Content.1.G.A.2
CCSS.Math.Content.1.G.A.3
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.1.MD.A
CCSS.Math.Content.1.MD.A.1
CCSS.Math.Content.1.MD.A.2
CCSS.Math.Content.1.MD.B
CCSS.Math.Content.1.MD.B.3
CCSS.Math.Content.1.MD.C
CCSS.Math.Content.1.MD.C.4
Number & Operations
CCSS.Math.Content.1.NBT.A
CCSS.Math.Content.1.NBT.A.1
CCSS.Math.Content.1.NBT.B
CCSS.Math.Content.1.NBT.B.2
CCSS.Math.Content.1.NBT.B.2a
CCSS.Math.Content.1.NBT.B.2b
CCSS.Math.Content.1.NBT.B.2c
CCSS.Math.Content.1.NBT.B.3
CCSS.Math.Content.1.NBT.C
CCSS.Math.Content.1.NBT.C.4
CCSS.Math.Content.1.NBT.C.5
CCSS.Math.Content.1.NBT.C.6
Grade 2
Algebraic Thinking
CCSS.Math.Content.2.OA.A
CCSS.Math.Content.2.OA.A.1
CCSS.Math.Content.2.OA.B
CCSS.Math.Content.2.OA.B.2
CCSS.Math.Content.2.OA.C
CCSS.Math.Content.2.OA.C.3
CCSS.Math.Content.2.OA.C.4
Geometry
CCSS.Math.Content.2.G.A
CCSS.Math.Content.2.G.A.1
CCSS.Math.Content.2.G.A.2
CCSS.Math.Content.2.G.A.3
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.2.MD.A
CCSS.Math.Content.2.MD.A.1
CCSS.Math.Content.2.MD.A.2
CCSS.Math.Content.2.MD.A.3
CCSS.Math.Content.2.MD.A.4
CCSS.Math.Content.2.MD.B
CCSS.Math.Content.2.MD.B.5
CCSS.Math.Content.2.MD.B.6
CCSS.Math.Content.2.MD.C
CCSS.Math.Content.2.MD.C.7
CCSS.Math.Content.2.MD.C.8
CCSS.Math.Content.2.MD.D
CCSS.Math.Content.2.MD.D.10
CCSS.Math.Content.2.MD.D.9
Number & Operations
CCSS.Math.Content.2.NBT.A
CCSS.Math.Content.2.NBT.A.1
CCSS.Math.Content.2.NBT.A.1a
CCSS.Math.Content.2.NBT.A.1b
CCSS.Math.Content.2.NBT.A.2
CCSS.Math.Content.2.NBT.A.3
CCSS.Math.Content.2.NBT.A.4
CCSS.Math.Content.2.NBT.B
CCSS.Math.Content.2.NBT.B.5
CCSS.Math.Content.2.NBT.B.6
CCSS.Math.Content.2.NBT.B.7
CCSS.Math.Content.2.NBT.B.8
CCSS.Math.Content.2.NBT.B.9
3rd to 5th
Grade 3
Algebraic Thinking
CCSS.Math.Content.3.OA.A
CCSS.Math.Content.3.OA.A.1
CCSS.Math.Content.3.OA.A.2
CCSS.Math.Content.3.OA.A.3
CCSS.Math.Content.3.OA.A.4
CCSS.Math.Content.3.OA.B
CCSS.Math.Content.3.OA.B.5
CCSS.Math.Content.3.OA.B.6
CCSS.Math.Content.3.OA.C
CCSS.Math.Content.3.OA.C.7
CCSS.Math.Content.3.OA.D
CCSS.Math.Content.3.OA.D.8
CCSS.Math.Content.3.OA.D.9
Geometry
CCSS.Math.Content.3.G.A
CCSS.Math.Content.3.G.A.1
CCSS.Math.Content.3.G.A.2
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.3.MD.A
CCSS.Math.Content.3.MD.A.1
CCSS.Math.Content.3.MD.A.2
CCSS.Math.Content.3.MD.B
CCSS.Math.Content.3.MD.B.3
CCSS.Math.Content.3.MD.B.4
CCSS.Math.Content.3.MD.C
CCSS.Math.Content.3.MD.C.5
CCSS.Math.Content.3.MD.C.5a
CCSS.Math.Content.3.MD.C.5b
CCSS.Math.Content.3.MD.C.6
CCSS.Math.Content.3.MD.C.7
CCSS.Math.Content.3.MD.C.7a
CCSS.Math.Content.3.MD.C.7b
CCSS.Math.Content.3.MD.C.7c
CCSS.Math.Content.3.MD.C.7d
CCSS.Math.Content.3.MD.D
CCSS.Math.Content.3.MD.D.8
Num & Ops Base Ten
CCSS.Math.Content.3.NBT.A
CCSS.Math.Content.3.NBT.A.1
CCSS.Math.Content.3.NBT.A.2
CCSS.Math.Content.3.NBT.A.3
Num & Ops Fractions
CCSS.Math.Content.3.NF.A
CCSS.Math.Content.3.NF.A.1
CCSS.Math.Content.3.NF.A.2
CCSS.Math.Content.3.NF.A.2a
CCSS.Math.Content.3.NF.A.2b
CCSS.Math.Content.3.NF.A.3
CCSS.Math.Content.3.NF.A.3a
CCSS.Math.Content.3.NF.A.3b
CCSS.Math.Content.3.NF.A.3c
CCSS.Math.Content.3.NF.A.3d
Grade 4
Algebraic Thinking
CCSS.Math.Content.4.OA.A
CCSS.Math.Content.4.OA.A.1
CCSS.Math.Content.4.OA.A.2
CCSS.Math.Content.4.OA.A.3
CCSS.Math.Content.4.OA.B
CCSS.Math.Content.4.OA.B.4
CCSS.Math.Content.4.OA.C
CCSS.Math.Content.4.OA.C.5
Geometry
CCSS.Math.Content.4.G.A
CCSS.Math.Content.4.G.A.1
CCSS.Math.Content.4.G.A.2
CCSS.Math.Content.4.G.A.3
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.4.MD.A
CCSS.Math.Content.4.MD.A.1
CCSS.Math.Content.4.MD.A.2
CCSS.Math.Content.4.MD.A.3
CCSS.Math.Content.4.MD.B
CCSS.Math.Content.4.MD.B.4
CCSS.Math.Content.4.MD.C
CCSS.Math.Content.4.MD.C.5
CCSS.Math.Content.4.MD.C.5a
CCSS.Math.Content.4.MD.C.5b
CCSS.Math.Content.4.MD.C.6
CCSS.Math.Content.4.MD.C.7
Num & Ops Base Ten
CCSS.Math.Content.4.NBT.A
CCSS.Math.Content.4.NBT.A.1
CCSS.Math.Content.4.NBT.A.2
CCSS.Math.Content.4.NBT.A.3
CCSS.Math.Content.4.NBT.B
CCSS.Math.Content.4.NBT.B.4
CCSS.Math.Content.4.NBT.B.5
CCSS.Math.Content.4.NBT.B.6
Num & Ops Fractions
CCSS.Math.Content.4.NF.A
CCSS.Math.Content.4.NF.A.1
CCSS.Math.Content.4.NF.A.2
CCSS.Math.Content.4.NF.B
CCSS.Math.Content.4.NF.B.3
CCSS.Math.Content.4.NF.B.3a
CCSS.Math.Content.4.NF.B.3b
CCSS.Math.Content.4.NF.B.3c
CCSS.Math.Content.4.NF.B.3d
CCSS.Math.Content.4.NF.B.4
CCSS.Math.Content.4.NF.B.4a
CCSS.Math.Content.4.NF.B.4b
CCSS.Math.Content.4.NF.B.4c
CCSS.Math.Content.4.NF.C
CCSS.Math.Content.4.NF.C.5
CCSS.Math.Content.4.NF.C.6
CCSS.Math.Content.4.NF.C.7
Grade 5
Algebraic Thinking
CCSS.Math.Content.5.OA.A
CCSS.Math.Content.5.OA.A.1
CCSS.Math.Content.5.OA.A.2
CCSS.Math.Content.5.OA.B
CCSS.Math.Content.5.OA.B.3
Geometry
CCSS.Math.Content.5.G.A
CCSS.Math.Content.5.G.A.1
CCSS.Math.Content.5.G.A.2
CCSS.Math.Content.5.G.B
CCSS.Math.Content.5.G.B.3
CCSS.Math.Content.5.G.B.4
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Measurement & Data
CCSS.Math.Content.5.MD.A
CCSS.Math.Content.5.MD.A.1
CCSS.Math.Content.5.MD.B
CCSS.Math.Content.5.MD.B.2
CCSS.Math.Content.5.MD.C
CCSS.Math.Content.5.MD.C.3
CCSS.Math.Content.5.MD.C.3a
CCSS.Math.Content.5.MD.C.3b
CCSS.Math.Content.5.MD.C.4
CCSS.Math.Content.5.MD.C.5
CCSS.Math.Content.5.MD.C.5a
CCSS.Math.Content.5.MD.C.5b
CCSS.Math.Content.5.MD.C.5c
Num & Ops Base Ten
CCSS.Math.Content.5.NBT.A
CCSS.Math.Content.5.NBT.A.1
CCSS.Math.Content.5.NBT.A.2
CCSS.Math.Content.5.NBT.A.3
CCSS.Math.Content.5.NBT.A.3a
CCSS.Math.Content.5.NBT.A.3b
CCSS.Math.Content.5.NBT.A.4
CCSS.Math.Content.5.NBT.B
CCSS.Math.Content.5.NBT.B.5
CCSS.Math.Content.5.NBT.B.6
CCSS.Math.Content.5.NBT.B.7
Num & Ops Fractions
CCSS.Math.Content.5.NF.A
CCSS.Math.Content.5.NF.A.1
CCSS.Math.Content.5.NF.A.2
CCSS.Math.Content.5.NF.B
CCSS.Math.Content.5.NF.B.3
CCSS.Math.Content.5.NF.B.4
CCSS.Math.Content.5.NF.B.4a
CCSS.Math.Content.5.NF.B.4b
CCSS.Math.Content.5.NF.B.5
CCSS.Math.Content.5.NF.B.5a
CCSS.Math.Content.5.NF.B.5b
CCSS.Math.Content.5.NF.B.6
CCSS.Math.Content.5.NF.B.7
CCSS.Math.Content.5.NF.B.7a
CCSS.Math.Content.5.NF.B.7b
CCSS.Math.Content.5.NF.B.7c
6th to 8th
Grade 6
Expression/Equation
CCSS.Math.Content.6.EE.A
CCSS.Math.Content.6.EE.A.1
CCSS.Math.Content.6.EE.A.2
CCSS.Math.Content.6.EE.A.2a
CCSS.Math.Content.6.EE.A.2b
CCSS.Math.Content.6.EE.A.2c
CCSS.Math.Content.6.EE.A.3
CCSS.Math.Content.6.EE.A.4
CCSS.Math.Content.6.EE.B
CCSS.Math.Content.6.EE.B.5
CCSS.Math.Content.6.EE.B.6
CCSS.Math.Content.6.EE.B.7
CCSS.Math.Content.6.EE.B.8
CCSS.Math.Content.6.EE.C
CCSS.Math.Content.6.EE.C.9
Geometry
CCSS.Math.Content.6.G.A
CCSS.Math.Content.6.G.A.1
CCSS.Math.Content.6.G.A.2
CCSS.Math.Content.6.G.A.3
CCSS.Math.Content.6.G.A.4
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Ratio & Proportion
CCSS.Math.Content.6.RP.A
CCSS.Math.Content.6.RP.A.1
CCSS.Math.Content.6.RP.A.2
CCSS.Math.Content.6.RP.A.3
CCSS.Math.Content.6.RP.A.3a
CCSS.Math.Content.6.RP.A.3b
CCSS.Math.Content.6.RP.A.3c
CCSS.Math.Content.6.RP.A.3d
Stats & Probability
CCSS.Math.Content.6.SP.A
CCSS.Math.Content.6.SP.A.1
CCSS.Math.Content.6.SP.A.2
CCSS.Math.Content.6.SP.A.3
CCSS.Math.Content.6.SP.B
CCSS.Math.Content.6.SP.B.4
CCSS.Math.Content.6.SP.B.5
CCSS.Math.Content.6.SP.B.5a
CCSS.Math.Content.6.SP.B.5b
CCSS.Math.Content.6.SP.B.5c
CCSS.Math.Content.6.SP.B.5d
The Number System
CCSS.Math.Content.6.NS.A
CCSS.Math.Content.6.NS.A.1
CCSS.Math.Content.6.NS.B
CCSS.Math.Content.6.NS.B.2
CCSS.Math.Content.6.NS.B.3
CCSS.Math.Content.6.NS.B.4
CCSS.Math.Content.6.NS.C
CCSS.Math.Content.6.NS.C.5
CCSS.Math.Content.6.NS.C.6
CCSS.Math.Content.6.NS.C.6a
CCSS.Math.Content.6.NS.C.6b
CCSS.Math.Content.6.NS.C.6c
CCSS.Math.Content.6.NS.C.7
CCSS.Math.Content.6.NS.C.7a
CCSS.Math.Content.6.NS.C.7b
CCSS.Math.Content.6.NS.C.7c
CCSS.Math.Content.6.NS.C.7d
CCSS.Math.Content.6.NS.C.8
Grade 7
Expression/Equation
CCSS.Math.Content.7.EE.A
CCSS.Math.Content.7.EE.A.1
CCSS.Math.Content.7.EE.A.2
CCSS.Math.Content.7.EE.B
CCSS.Math.Content.7.EE.B.3
CCSS.Math.Content.7.EE.B.4
CCSS.Math.Content.7.EE.B.4a
CCSS.Math.Content.7.EE.B.4b
Geometry
CCSS.Math.Content.7.G.A
CCSS.Math.Content.7.G.A.1
CCSS.Math.Content.7.G.A.2
CCSS.Math.Content.7.G.A.3
CCSS.Math.Content.7.G.B
CCSS.Math.Content.7.G.B.4
CCSS.Math.Content.7.G.B.5
CCSS.Math.Content.7.G.B.6
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Ratio & Proportion
CCSS.Math.Content.7.RP.A
CCSS.Math.Content.7.RP.A.1
CCSS.Math.Content.7.RP.A.2
CCSS.Math.Content.7.RP.A.2a
CCSS.Math.Content.7.RP.A.2b
CCSS.Math.Content.7.RP.A.2c
CCSS.Math.Content.7.RP.A.2d
CCSS.Math.Content.7.RP.A.3
Stats & Probability
CCSS.Math.Content.7.SP.A
CCSS.Math.Content.7.SP.A.1
CCSS.Math.Content.7.SP.A.2
CCSS.Math.Content.7.SP.B
CCSS.Math.Content.7.SP.B.3
CCSS.Math.Content.7.SP.B.4
CCSS.Math.Content.7.SP.C
CCSS.Math.Content.7.SP.C.5
CCSS.Math.Content.7.SP.C.6
CCSS.Math.Content.7.SP.C.7
CCSS.Math.Content.7.SP.C.7a
CCSS.Math.Content.7.SP.C.7b
CCSS.Math.Content.7.SP.C.8
CCSS.Math.Content.7.SP.C.8a
CCSS.Math.Content.7.SP.C.8b
CCSS.Math.Content.7.SP.C.8c
The Number System
CCSS.Math.Content.7.NS.A
CCSS.Math.Content.7.NS.A.1
CCSS.Math.Content.7.NS.A.1a
CCSS.Math.Content.7.NS.A.1b
CCSS.Math.Content.7.NS.A.1c
CCSS.Math.Content.7.NS.A.1d
CCSS.Math.Content.7.NS.A.2
CCSS.Math.Content.7.NS.A.2a
CCSS.Math.Content.7.NS.A.2b
CCSS.Math.Content.7.NS.A.2c
CCSS.Math.Content.7.NS.A.2d
CCSS.Math.Content.7.NS.A.3
Grade 8
Expression/Equation
CCSS.Math.Content.8.EE.A
CCSS.Math.Content.8.EE.A.1
CCSS.Math.Content.8.EE.A.2
CCSS.Math.Content.8.EE.A.3
CCSS.Math.Content.8.EE.A.4
CCSS.Math.Content.8.EE.B
CCSS.Math.Content.8.EE.B.5
CCSS.Math.Content.8.EE.B.6
CCSS.Math.Content.8.EE.C
CCSS.Math.Content.8.EE.C.7
CCSS.Math.Content.8.EE.C.7a
CCSS.Math.Content.8.EE.C.7b
CCSS.Math.Content.8.EE.C.8
CCSS.Math.Content.8.EE.C.8a
CCSS.Math.Content.8.EE.C.8b
CCSS.Math.Content.8.EE.C.8c
Functions
CCSS.Math.Content.8.F.A
CCSS.Math.Content.8.F.A.1
CCSS.Math.Content.8.F.A.2
CCSS.Math.Content.8.F.A.3
CCSS.Math.Content.8.F.B
CCSS.Math.Content.8.F.B.4
CCSS.Math.Content.8.F.B.5
Geometry
CCSS.Math.Content.8.G.A
CCSS.Math.Content.8.G.A.1
CCSS.Math.Content.8.G.A.1a
CCSS.Math.Content.8.G.A.1b
CCSS.Math.Content.8.G.A.1c
CCSS.Math.Content.8.G.A.2
CCSS.Math.Content.8.G.A.3
CCSS.Math.Content.8.G.A.4
CCSS.Math.Content.8.G.A.5
CCSS.Math.Content.8.G.B
CCSS.Math.Content.8.G.B.6
CCSS.Math.Content.8.G.B.7
CCSS.Math.Content.8.G.B.8
CCSS.Math.Content.8.G.C
CCSS.Math.Content.8.G.C.9
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Stats & Probability
CCSS.Math.Content.8.SP.A
CCSS.Math.Content.8.SP.A.1
CCSS.Math.Content.8.SP.A.2
CCSS.Math.Content.8.SP.A.3
CCSS.Math.Content.8.SP.A.4
The Number System
CCSS.Math.Content.8.NS.A
CCSS.Math.Content.8.NS.A.1
CCSS.Math.Content.8.NS.A.2
9th to 12th
Algebra
CCSS.Math.Content.HSA-APR
CCSS.Math.Content.HSA-APR.A
CCSS.Math.Content.HSA-APR.A.1
CCSS.Math.Content.HSA-APR.B
CCSS.Math.Content.HSA-APR.B.2
CCSS.Math.Content.HSA-APR.B.3
CCSS.Math.Content.HSA-APR.C
CCSS.Math.Content.HSA-APR.C.4
CCSS.Math.Content.HSA-APR.C.5
CCSS.Math.Content.HSA-APR.D
CCSS.Math.Content.HSA-APR.D.6
CCSS.Math.Content.HSA-APR.D.7
CCSS.Math.Content.HSA-CED
CCSS.Math.Content.HSA-CED.A
CCSS.Math.Content.HSA-CED.A.1
CCSS.Math.Content.HSA-CED.A.2
CCSS.Math.Content.HSA-CED.A.3
CCSS.Math.Content.HSA-CED.A.4
CCSS.Math.Content.HSA-REI
CCSS.Math.Content.HSA-REI.A
CCSS.Math.Content.HSA-REI.A.1
CCSS.Math.Content.HSA-REI.A.2
CCSS.Math.Content.HSA-REI.B
CCSS.Math.Content.HSA-REI.B.3
CCSS.Math.Content.HSA-REI.B.4
CCSS.Math.Content.HSA-REI.B.4a
CCSS.Math.Content.HSA-REI.B.4b
CCSS.Math.Content.HSA-REI.C
CCSS.Math.Content.HSA-REI.C.5
CCSS.Math.Content.HSA-REI.C.6
CCSS.Math.Content.HSA-REI.C.7
CCSS.Math.Content.HSA-REI.C.8
CCSS.Math.Content.HSA-REI.C.9
CCSS.Math.Content.HSA-REI.D
CCSS.Math.Content.HSA-REI.D.10
CCSS.Math.Content.HSA-REI.D.11
CCSS.Math.Content.HSA-REI.D.12
CCSS.Math.Content.HSA-SSE
CCSS.Math.Content.HSA-SSE.A
CCSS.Math.Content.HSA-SSE.A.1
CCSS.Math.Content.HSA-SSE.A.1a
CCSS.Math.Content.HSA-SSE.A.1b
CCSS.Math.Content.HSA-SSE.A.2
CCSS.Math.Content.HSA-SSE.B
CCSS.Math.Content.HSA-SSE.B.3
CCSS.Math.Content.HSA-SSE.B.3a
CCSS.Math.Content.HSA-SSE.B.3b
CCSS.Math.Content.HSA-SSE.B.3c
CCSS.Math.Content.HSA-SSE.B.4
Functions
CCSS.Math.Content.HSF-BF
CCSS.Math.Content.HSF-BF.A
CCSS.Math.Content.HSF-BF.A.1
CCSS.Math.Content.HSF-BF.A.1a
CCSS.Math.Content.HSF-BF.A.1b
CCSS.Math.Content.HSF-BF.A.1c
CCSS.Math.Content.HSF-BF.A.2
CCSS.Math.Content.HSF-BF.B
CCSS.Math.Content.HSF-BF.B.3
CCSS.Math.Content.HSF-BF.B.4
CCSS.Math.Content.HSF-BF.B.4a
CCSS.Math.Content.HSF-BF.B.4b
CCSS.Math.Content.HSF-BF.B.4c
CCSS.Math.Content.HSF-BF.B.4d
CCSS.Math.Content.HSF-BF.B.5
CCSS.Math.Content.HSF-IF
CCSS.Math.Content.HSF-IF.A
CCSS.Math.Content.HSF-IF.A.1
CCSS.Math.Content.HSF-IF.A.2
CCSS.Math.Content.HSF-IF.A.3
CCSS.Math.Content.HSF-IF.B
CCSS.Math.Content.HSF-IF.B.4
CCSS.Math.Content.HSF-IF.B.5
CCSS.Math.Content.HSF-IF.B.6
CCSS.Math.Content.HSF-IF.C
CCSS.Math.Content.HSF-IF.C.7
CCSS.Math.Content.HSF-IF.C.7a
CCSS.Math.Content.HSF-IF.C.7b
CCSS.Math.Content.HSF-IF.C.7c
CCSS.Math.Content.HSF-IF.C.7d
CCSS.Math.Content.HSF-IF.C.7e
CCSS.Math.Content.HSF-IF.C.8
CCSS.Math.Content.HSF-IF.C.8a
CCSS.Math.Content.HSF-IF.C.8b
CCSS.Math.Content.HSF-IF.C.9
CCSS.Math.Content.HSF-LE
CCSS.Math.Content.HSF-LE.A
CCSS.Math.Content.HSF-LE.A.1
CCSS.Math.Content.HSF-LE.A.1a
CCSS.Math.Content.HSF-LE.A.1b
CCSS.Math.Content.HSF-LE.A.1c
CCSS.Math.Content.HSF-LE.A.2
CCSS.Math.Content.HSF-LE.A.3
CCSS.Math.Content.HSF-LE.A.4
CCSS.Math.Content.HSF-LE.B
CCSS.Math.Content.HSF-LE.B.5
CCSS.Math.Content.HSF-TF
CCSS.Math.Content.HSF-TF.A
CCSS.Math.Content.HSF-TF.A.1
CCSS.Math.Content.HSF-TF.A.2
CCSS.Math.Content.HSF-TF.A.3
CCSS.Math.Content.HSF-TF.A.4
CCSS.Math.Content.HSF-TF.B
CCSS.Math.Content.HSF-TF.B.5
CCSS.Math.Content.HSF-TF.B.6
CCSS.Math.Content.HSF-TF.B.7
CCSS.Math.Content.HSF-TF.C
CCSS.Math.Content.HSF-TF.C.8
CCSS.Math.Content.HSF-TF.C.9
Geometry
CCSS.Math.Content.HSG-C
CCSS.Math.Content.HSG-C.A
CCSS.Math.Content.HSG-C.A.1
CCSS.Math.Content.HSG-C.A.2
CCSS.Math.Content.HSG-C.A.3
CCSS.Math.Content.HSG-C.A.4
CCSS.Math.Content.HSG-C.B
CCSS.Math.Content.HSG-C.B.5
CCSS.Math.Content.HSG-CO
CCSS.Math.Content.HSG-CO.A
CCSS.Math.Content.HSG-CO.A.1
CCSS.Math.Content.HSG-CO.A.2
CCSS.Math.Content.HSG-CO.A.3
CCSS.Math.Content.HSG-CO.A.4
CCSS.Math.Content.HSG-CO.A.5
CCSS.Math.Content.HSG-CO.B
CCSS.Math.Content.HSG-CO.B.6
CCSS.Math.Content.HSG-CO.B.7
CCSS.Math.Content.HSG-CO.B.8
CCSS.Math.Content.HSG-CO.C
CCSS.Math.Content.HSG-CO.C.10
CCSS.Math.Content.HSG-CO.C.11
CCSS.Math.Content.HSG-CO.C.9
CCSS.Math.Content.HSG-CO.D
CCSS.Math.Content.HSG-CO.D.12
CCSS.Math.Content.HSG-CO.D.13
CCSS.Math.Content.HSG-GMD
CCSS.Math.Content.HSG-GMD.A
CCSS.Math.Content.HSG-GMD.A.1
CCSS.Math.Content.HSG-GMD.A.2
CCSS.Math.Content.HSG-GMD.A.3
CCSS.Math.Content.HSG-GMD.B
CCSS.Math.Content.HSG-GMD.B.4
CCSS.Math.Content.HSG-GPE
CCSS.Math.Content.HSG-GPE.A
CCSS.Math.Content.HSG-GPE.A.1
CCSS.Math.Content.HSG-GPE.A.2
CCSS.Math.Content.HSG-GPE.A.3
CCSS.Math.Content.HSG-GPE.B
CCSS.Math.Content.HSG-GPE.B.4
CCSS.Math.Content.HSG-GPE.B.5
CCSS.Math.Content.HSG-GPE.B.6
CCSS.Math.Content.HSG-GPE.B.7
CCSS.Math.Content.HSG-MG
CCSS.Math.Content.HSG-MG.A
CCSS.Math.Content.HSG-MG.A.1
CCSS.Math.Content.HSG-MG.A.2
CCSS.Math.Content.HSG-MG.A.3
CCSS.Math.Content.HSG-SRT
CCSS.Math.Content.HSG-SRT.A
CCSS.Math.Content.HSG-SRT.A.1
CCSS.Math.Content.HSG-SRT.A.1a
CCSS.Math.Content.HSG-SRT.A.1b
CCSS.Math.Content.HSG-SRT.A.2
CCSS.Math.Content.HSG-SRT.A.3
CCSS.Math.Content.HSG-SRT.B
CCSS.Math.Content.HSG-SRT.B.4
CCSS.Math.Content.HSG-SRT.B.5
CCSS.Math.Content.HSG-SRT.C
CCSS.Math.Content.HSG-SRT.C.6
CCSS.Math.Content.HSG-SRT.C.7
CCSS.Math.Content.HSG-SRT.C.8
CCSS.Math.Content.HSG-SRT.D
CCSS.Math.Content.HSG-SRT.D.10
CCSS.Math.Content.HSG-SRT.D.11
CCSS.Math.Content.HSG-SRT.D.9
Mathematical Practices
CCSS.Math.Practice.MP1
CCSS.Math.Practice.MP2
CCSS.Math.Practice.MP3
CCSS.Math.Practice.MP4
CCSS.Math.Practice.MP5
CCSS.Math.Practice.MP6
CCSS.Math.Practice.MP7
CCSS.Math.Practice.MP8
Number & Quantity
CCSS.Math.Content.HSN-CN
CCSS.Math.Content.HSN-CN.A
CCSS.Math.Content.HSN-CN.A.1
CCSS.Math.Content.HSN-CN.A.2
CCSS.Math.Content.HSN-CN.A.3
CCSS.Math.Content.HSN-CN.B
CCSS.Math.Content.HSN-CN.B.4
CCSS.Math.Content.HSN-CN.B.5
CCSS.Math.Content.HSN-CN.B.6
CCSS.Math.Content.HSN-CN.C
CCSS.Math.Content.HSN-CN.C.7
CCSS.Math.Content.HSN-CN.C.8
CCSS.Math.Content.HSN-CN.C.9
CCSS.Math.Content.HSN-Q
CCSS.Math.Content.HSN-Q.A
CCSS.Math.Content.HSN-Q.A.1
CCSS.Math.Content.HSN-Q.A.2
CCSS.Math.Content.HSN-Q.A.3
CCSS.Math.Content.HSN-RN
CCSS.Math.Content.HSN-RN.A
CCSS.Math.Content.HSN-RN.A.1
CCSS.Math.Content.HSN-RN.A.2
CCSS.Math.Content.HSN-RN.B
CCSS.Math.Content.HSN-RN.B.3
CCSS.Math.Content.HSN-VM
CCSS.Math.Content.HSN-VM.A
CCSS.Math.Content.HSN-VM.A.1
CCSS.Math.Content.HSN-VM.A.2
CCSS.Math.Content.HSN-VM.A.3
CCSS.Math.Content.HSN-VM.B
CCSS.Math.Content.HSN-VM.B.4
CCSS.Math.Content.HSN-VM.B.4a
CCSS.Math.Content.HSN-VM.B.4b
CCSS.Math.Content.HSN-VM.B.4c
CCSS.Math.Content.HSN-VM.B.5
CCSS.Math.Content.HSN-VM.B.5a
CCSS.Math.Content.HSN-VM.B.5b
CCSS.Math.Content.HSN-VM.C
CCSS.Math.Content.HSN-VM.C.10
CCSS.Math.Content.HSN-VM.C.11
CCSS.Math.Content.HSN-VM.C.12
CCSS.Math.Content.HSN-VM.C.6
CCSS.Math.Content.HSN-VM.C.7
CCSS.Math.Content.HSN-VM.C.8
CCSS.Math.Content.HSN-VM.C.9
Stats & Probability
CCSS.Math.Content.HSS-CP
CCSS.Math.Content.HSS-CP.A
CCSS.Math.Content.HSS-CP.A.1
CCSS.Math.Content.HSS-CP.A.2
CCSS.Math.Content.HSS-CP.A.3
CCSS.Math.Content.HSS-CP.A.4
CCSS.Math.Content.HSS-CP.A.5
CCSS.Math.Content.HSS-CP.B
CCSS.Math.Content.HSS-CP.B.6
CCSS.Math.Content.HSS-CP.B.7
CCSS.Math.Content.HSS-CP.B.8
CCSS.Math.Content.HSS-CP.B.9
CCSS.Math.Content.HSS-IC
CCSS.Math.Content.HSS-IC.A
CCSS.Math.Content.HSS-IC.A.1
CCSS.Math.Content.HSS-IC.A.2
CCSS.Math.Content.HSS-IC.B
CCSS.Math.Content.HSS-IC.B.3
CCSS.Math.Content.HSS-IC.B.4
CCSS.Math.Content.HSS-IC.B.5
CCSS.Math.Content.HSS-IC.B.6
CCSS.Math.Content.HSS-ID
CCSS.Math.Content.HSS-ID.A
CCSS.Math.Content.HSS-ID.A.1
CCSS.Math.Content.HSS-ID.A.2
CCSS.Math.Content.HSS-ID.A.3
CCSS.Math.Content.HSS-ID.A.4
CCSS.Math.Content.HSS-ID.B
CCSS.Math.Content.HSS-ID.B.5
CCSS.Math.Content.HSS-ID.B.6
CCSS.Math.Content.HSS-ID.B.6a
CCSS.Math.Content.HSS-ID.B.6b
CCSS.Math.Content.HSS-ID.B.6c
CCSS.Math.Content.HSS-ID.C
CCSS.Math.Content.HSS-ID.C.7
CCSS.Math.Content.HSS-ID.C.8
CCSS.Math.Content.HSS-ID.C.9
CCSS.Math.Content.HSS-MD
CCSS.Math.Content.HSS-MD.A
CCSS.Math.Content.HSS-MD.A.1
CCSS.Math.Content.HSS-MD.A.2
CCSS.Math.Content.HSS-MD.A.3
CCSS.Math.Content.HSS-MD.A.4
CCSS.Math.Content.HSS-MD.B
CCSS.Math.Content.HSS-MD.B.5
CCSS.Math.Content.HSS-MD.B.5a
CCSS.Math.Content.HSS-MD.B.5b
CCSS.Math.Content.HSS-MD.B.6
CCSS.Math.Content.HSS-MD.B.7
1 - 20 of 221 results

Four-Digit Sum

In a four‑digit number, the sum of the digits is 10. All the digits are different. What is the largest such four‑digit number?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Num & Ops Base Ten
Make sense of problems and persevere in solving them.
Generalize place value understanding for multi-digit whole numbers.
4.NBT.A.2, CCSS.Math.Practice.MP1

3 Consecutive Sums

Place a number in each of the following empty boxes so that the sum of the numbers in any 3 consecutive boxes is 2013. What is the number that should go in the box with the question mark?

607 724 ?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Num & Ops Base Ten
Reason abstractly and quantitatively.
Make sense of problems and persevere in solving them.
Use place value understanding and properties of operations to perform multi-digit arithmetic.
3.NBT.A.2, 4.NBT.B.4, CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP2

Four With Ties

There are 4! = 24 ways to rank four objects. However, a friend told me that if ties are allowed, the number increases to 75.

I attempted to list all the possibilities by first listing the 24 orderings of four objects, then using brackets to group ties involving two players, then group ties involving three players, and finally the single case in which all four objects are tied. But something has gone wrong; my list includes just 69 possibilities, not 75.

What happened? Did I miss something, or was my friend mistaken?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Attend to precision.
Make sense of problems and persevere in solving them.
CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP6

Rectangular Path

The rectangle shown consists of eight squares. The length of each side of each square is 1 unit. The length of the shortest path from A to C using the lines shown is 6 units.

How many different six-unit paths are there from A to C?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Attend to precision.
Reason abstractly and quantitatively.
Make sense of problems and persevere in solving them.
CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP2, CCSS.Math.Practice.MP6

Rectangular Perimeter

The length and width of a rectangle are whole numbers of centimeters. Neither is divisible by 6. The area of the rectangle is 36 square centimeters. What is the perimeter of the rectangle, in centimeters?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Measurement & Data
Algebraic Thinking
Make sense of problems and persevere in solving them.
Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit.
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
Gain familiarity with factors and multiples.
Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.
3.MD.D.8, 4.OA.B.4, 3.MD.C.7b, 4.MD.A.3, CCSS.Math.Practice.MP1

Four Digit Calendar

A calendar year is typically referred to as a four‑digit number, as in 2008, or as a two‑digit number, as in ’08. Sometimes, the two‑digit number divides evenly into the four‑digit number, with no remainder.

How many times did this happen during the twentieth century?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
The Number System
Num & Ops Base Ten
Algebraic Thinking
Attend to precision.
Make sense of problems and persevere in solving them.
Compute fluently with multi-digit numbers and find common factors and multiples.
Perform operations with multi-digit whole numbers and with decimals to hundredths.
Multiply and divide within 100.
3.OA.C.7, 5.NBT.B.6, 6.NS.B.2, CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP6

Positive Integer Divisors

What is the smallest positive number with exactly ten positive integer divisors?

And what is the next one after that?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Algebraic Thinking
Make sense of problems and persevere in solving them.
Gain familiarity with factors and multiples.
4.OA.B.4, CCSS.Math.Practice.MP1

Powers of 777

777² means 777 × 777,
777³ means 777 × 777 × 777,
and so on.

Suppose 777⁷ is completely multiplied out. What is the units digit of
the resulting product?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Expression/Equation
Num & Ops Fractions
Algebraic Thinking
Attend to precision.
Make sense of problems and persevere in solving them.
Apply and extend previous understandings of arithmetic to algebraic expressions.
Apply and extend previous understandings of multiplication and division to multiply and divide fractions.
Multiply and divide within 100.
3.OA.C.7, 5.NF.B.5a, 6.EE.A.1, CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP6

Double Or Not

Would you rather work seven days at $20 per day or be paid $2 the first day and have your salary double every day for a week?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Functions
Num & Ops Base Ten
Algebraic Thinking
Look for and make use of structure.
Reason abstractly and quantitatively.
Make sense of problems and persevere in solving them.
Interpreting Functions
Generalize place value understanding for multi-digit whole numbers.
Solve problems involving the four operations, and identify and explain patterns in arithmetic.
3.OA.D.9, 4.NBT.A.2, HSF-IF.A.3, CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP2, CCSS.Math.Practice.MP7

A Carpenter's Trisection

Can you really trisect an angle with a carpenter's square?

Problems
Grades: High School, 9th to 12th
Geometry
Congruence
HSG-CO.B, HSG-CO.C, HSG-CO.D

Making Money at the Movies

How much should the manager of a theater raise his prices in order to maximize his profit?

Problems
Grades: High School, 9th to 12th
Functions
Building Functions
Interpreting Functions
HSF-IF.B.4, HSF-IF.B.5, HSF-IF.C.7, HSF-BF.A.1

Triangle Transformation

Find two transformations that will move one triangle onto the other.

Problems
Grades: High School, 9th to 12th
Geometry
Congruence
HSG-CO.A.5

The Ninja Mission

A Ninja apprentice needs your help to use the density of titanium to calculate the angle of the spike on his throwing star!

Problems
Grades: High School, 9th to 12th
Geometry
Circles
Similarity, Right Triangles, and Trigonometry
HSG-SRT.D, HSG-C.B

Let the Sunshine In

Find the dimensions of a window designed to let in the maximum amount of sunshine.

Problems
Grades: 9th to 12th
Geometry
Functions
Modeling with Geometry
Interpreting Functions
HSF-IF.B.4, HSG-MG.A.3

Flying High

Which of two planes is gaining altitude more quickly?

Problems
Grades: High School, 9th to 12th
Geometry
Similarity, Right Triangles, and Trigonometry
HSG-SRT.C.8

A Circle Inscribed in an Isosceles Triangle

Find the radius of the inscribed circle.

Problems
Grades: High School, 9th to 12th
Geometry
Circles
Similarity, Right Triangles, and Trigonometry
HSG-SRT.C.8, HSG-C.A.2

Around the Corner

A girder must be carried along a corridor that has a 90-degree turn at the end. How wide must the corridor be in order for the girder to fit around the corner?

Problems
Grades: 9th to 12th, High School
Geometry
Functions
Similarity, Right Triangles, and Trigonometry
Interpreting Functions
HSF-IF.B.5, HSG-SRT.B.5

Fix This Picture

Why can't this figure, which includes a circle and a rhombus, exist with the given measurements?

Problems
Grades: High School, 9th to 12th
Geometry
Circles
Similarity, Right Triangles, and Trigonometry
HSG-SRT.C.8, HSG-C.A.2

Houses

There are 5 houses on a street: house A, B, C, D and E. The distance between any two adjacent houses is 100 feet. There are 2 children living in house A, 3 children living in house B, 4 children living in house C, 5 children living in house D and 6 children living in house E. If the school bus can only make one stop on that street, in front of which house should the bus stop so that the sum of walking distance among all children will be the least?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Attend to precision.
Reason abstractly and quantitatively.
Make sense of problems and persevere in solving them.
CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP2, CCSS.Math.Practice.MP6

Coin Sums

Jada has 1 penny, 2 nickels, and 1 dime. How many different sums of money can she make, if she uses at least one coin?

Problems
Grades: 9th to 12th, 6th to 8th, 3rd to 5th
Mathematical Practices
Attend to precision.
Make sense of problems and persevere in solving them.
CCSS.Math.Practice.MP1, CCSS.Math.Practice.MP6

1 - 20 of 221 results

Select Type

Select Topic by Grade