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    Jan Gebert is an Illuminations lesson plan reviewer and instructor of professional and secondary education at East Stroudsburg University. So she definitely knows a thing or two about quality lessons. Illuminations asked her for her favorite out of our 600+ lessons.
    Success Story

    Deeanna Golden, a teacher of 24 years at F.M. Golson Elementary School in Marianna, Florida, is a beloved Illuminations lesson plan writer. So we asked her, "Why do you think it is important to share resources?"

    Success Story

    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
    Jessica Woolard, a graduate of the Ontario Institute for Studies in Education of the University of Torontoher, spent part of her summer interning for NCTM before she returned to Canada to complete her degree in education.  During that time, she helped to create and edit lessons for Illuminations.
    Success Story
    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
    Plot a set of data and determine a line of best fit.
    Web Interactive
    Grades: High School, 6th to 8th, 9th to 12th
    Stats & Probability
    Interpreting Categorical and Quantitative Data
    Investigate patterns of association in bivariate data.
    8.SP.A.1, 8.SP.A.2, 8.SP.A.3, HSS-ID.B.6a, HSS-ID.B.6b, HSS-ID.B.6c, HSS-ID.C.7, HSS-ID.C.8
    Practice counting and adding by 5s.
    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 patterns to cover the screen using regular polygons.
    Grades: 6th to 8th, 3rd to 5th
    Model linear functions using Barbie dolls and rubber bands.
    Lesson Plan
    Grades: High School, 6th to 8th, 9th to 12th
    Stats & Probability
    Interpreting Categorical and Quantitative Data
    Investigate patterns of association in bivariate data.
    8.SP.A.1, 8.SP.A.2, 8.SP.A.3, HSS-ID.B.6a, HSS-ID.B.6c, HSS-ID.C.7
    Create dynamic drawings on an isometric dot grid.
    Web Interactive
    Grades: High School, 6th to 8th, 3rd to 5th
    Geometry
    Draw construct, and describe geometrical figures and describe the relationships between them.
    7.G.A.2
    Relate functions, tables, and graphs to roller coaster drops.
    Lesson Plan
    Grades: 6th to 8th
    Expression/Equation
    Functions
    Use properties of operations to generate equivalent expressions.
    Apply and extend previous understandings of arithmetic to algebraic expressions.
    Define, evaluate, and compare functions.
    6.EE.A.2c, 8.F.A.1, 6.EE.A.3, 7.EE.A.2

    Construct perpendicular bisectors, find circumcenters, calculate area, and use proportions to solve a real world problem.

    Lesson Plan
    Grades: High School, 9th to 12th
    Geometry
    Congruence
    HSG-CO.D.12
    Use a clinometer (a measuring device built from a protractor) and isosceles right triangles to find the height of a building.
    Lesson Plan
    Grades: 6th to 8th
    Stats & Probability
    Develop understanding of statistical variability.
    Summarize and describe distributions.
    6.SP.A.3, 6.SP.B.5c, 6.SP.B.5d, 6.SP.A.1
    Evaluate expressions to play bingo.
    Lesson Plan
    Use base ten blocks to model decimal multiplication.
    Lesson Plan
    Grades: 3rd to 5th
    Num & Ops Base Ten
    Perform operations with multi-digit whole numbers and with decimals to hundredths.
    5.NBT.B.7
    Use models to practice regrouping and to reinforce place value understanding.
    Lesson Plan
    Grades: 3rd to 5th, Pre K to 2nd
    Num & Ops Base Ten
    Number & Operations
    Algebraic Thinking
    Understand the place value system.
    Use place value understanding and properties of operations to perform multi-digit arithmetic.
    Generalize place value understanding for multi-digit whole numbers.
    Use place value understanding and properties of operations to add and subtract.
    Understand place value.
    Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
    K.OA.A.1, K.OA.A.2, 1.NBT.B.2a, 1.NBT.B.2b, 1.NBT.B.2c, 1.NBT.C.4, 2.NBT.A.1a, 2.NBT.B.5, 2.NBT.B.6, 2.NBT.B.7, 3.NBT.A.2, 4.NBT.A.1, 4.NBT.B.4, 5.NBT.A.1
    Use the book, A Remainder of One by Elinor J. Pinczes, to introduce division with remainders.
    Lesson Plan
    Grades: PreK to 2nd, 3rd to 5th, Pre K to 2nd
    Algebraic Thinking
    Number & Operations
    Gain familiarity with factors and multiples.
    Use the four operations with whole numbers to solve problems.
    Solve problems involving the four operations, and identify and explain patterns in arithmetic.
    Multiply and divide within 100.
    Represent and solve problems involving multiplication and division.
    Use place value understanding and properties of operations to add and subtract.
    1.NBT.C, 3.OA.A.2, 3.OA.A.3, 3.OA.C.7, 3.OA.D.8, 4.OA.A.2, 4.OA.A.3, 4.OA.B.4
    1 - 20 of 471 results