Become proficient with numbers and operations by guiding Okta the octopus through a mathematical maze.

This interactive is also a mobile app. Download it on iTunes or Google Play.

Web Interactive

Grades: 3rd to 5th, 6th to 8th, PreK to 2nd, Pre K to 2nd

Num & Ops Fractions

The Number System

Num & Ops Base Ten

Expression/Equation

Algebraic Thinking

Number & Operations

Apply and extend previous understandings of multiplication and division to multiply and divide fractions.

Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.

Use equivalent fractions as a strategy to add and subtract fractions.

Compute fluently with multi-digit numbers and find common factors and multiples.

Apply and extend previous understandings of multiplication and division to divide fractions by fractions.

Perform operations with multi-digit whole numbers and with decimals to hundredths.

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.

Use place value understanding and properties of operations to perform multi-digit arithmetic.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Multiply and divide within 100.

Use place value understanding and properties of operations to add and subtract.

Add and subtract within 20.

Understand and apply properties of operations and the relationship between addition and subtraction.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

K.OA.A.5, 1.OA.B.4, 1.OA.C.6, 1.NBT.C.4, 2.OA.B.2, 2.NBT.B.5, 2.NBT.B.6, 2.NBT.B.7, 2.NBT.B.9, 3.OA.C.7, 3.NBT.A.2, 4.NBT.B.4, 4.NBT.B.5, 5.NF.B.4a, 5.NF.B.4b, 7.NS.A.3, 7.EE.B.3, 4.NBT.B.6, 4.NF.B.3a, 4.NF.B.3d, 5.NBT.B.7, 6.NS.A.1, 6.NS.B.3, 7.NS.A.2a, 5.NF.A.1, 7.NS.A.2c, 5.NF.B.6

Practice counting and adding by 10s.

Web Interactive

Grades: PreK to 2nd, Pre K to 2nd

Algebraic Thinking

Number & Operations

Counting & Cardinality

Add and subtract within 20.

Use place value understanding and properties of operations to add and subtract.

Understand and apply properties of operations and the relationship between addition and subtraction.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Count to tell the number of objects.

Know number names and the count sequence.

K.CC.A.2, K.CC.B.4a, K.CC.B.4b, K.CC.B.4c, K.CC.B.5, K.OA.A.1, K.OA.A.2, K.OA.A.5, 1.OA.B.4, 1.OA.C.6, 1.NBT.C.4, 2.OA.B.2

Create a custom spinner to examine experimental and theoretical outcomes.

Web Interactive

Grades: 9th to 12th, High School, 6th to 8th, 3rd to 5th, PreK to 2nd

Stats & Probability

Making Inferences and Justifying Conclusions

Investigate chance processes and develop, use, and evaluate probability models.

7.SP.C.5, 7.SP.C.6, 7.SP.C.7b, 7.SP.C.8c, HSS-IC.A.2

Count, add, and subtract by grouping cows.

Web Interactive

Grades: Pre K to 2nd, PreK to 2nd

Number & Operations

Algebraic Thinking

Counting & Cardinality

Understand place value.

Use place value understanding and properties of operations to add and subtract.

Add and subtract within 20.

Understand and apply properties of operations and the relationship between addition and subtraction.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Count to tell the number of objects.

Know number names and the count sequence.

K.CC.A.1, K.CC.B.4a, K.CC.B.4b, K.CC.B.5, K.OA.A.1, K.OA.A.2, K.OA.A.5, 1.OA.B.4, 1.OA.C.6, 1.NBT.C.4, 2.OA.B.2, 2.NBT.B.7, 2.NBT.A.2

By yourself or against a friend, match whole numbers, shapes,
fractions, or multiplication facts to equivalent representations.
Practice with the clear panes or step up the challenge with the windows
closed.

This activity is now available for your phone or tablet in Google Play or App Store.

Web Interactive

Grades: 3rd to 5th, Pre K to 2nd, PreK to 2nd

Num & Ops Fractions

Measurement & Data

Geometry

Algebraic Thinking

Num & Ops Base Ten

Number & Operations

Apply and extend previous understandings of multiplication and division to multiply and divide fractions.

Geometric measurement: understand concepts of area and relate area to multiplication and to addition.

Reason with shapes and their attributes.

Work with equal groups of objects to gain foundations for multiplication.

Classify two-dimensional figures into categories based on their properties.

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.

Use place value understanding and properties of operations to perform multi-digit arithmetic.

Generalize place value understanding for multi-digit whole numbers.

Develop understanding of fractions as numbers.

Multiply and divide within 100.

Understand place value.

Analyze, compare, create, and compose shapes.

Identify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres).

K.G.A.2, K.G.B.4, 2.NBT.A.3, 2.G.A.1, 3.OA.C.7, 3.NF.A.1, 3.NF.A.3c, 3.G.A.2, 4.NBT.A.2, 4.NBT.B.5, 4.NF.B.4a, 5.G.B.3, 5.G.B.4, 1.G.A.3, 2.OA.C.4, 2.G.A.2, 2.G.A.3, 3.MD.C.7b, 5.NF.B.3