• Recent Interactives

    Explore the amplitude, period, and phase shift by examining the graphs of various trigonometric functions.
    Grades: 9th to 12th, High School
    Trigonometric Functions
    Interpreting Functions
    HSF-IF.C.7e, HSF-TF.B.5
    Find equivalent numerical expressions using a balance scale.
    Web Interactive
    Grades: 3rd to 5th
    Algebraic Thinking
    Write and interpret numerical expressions.
    5.OA.A.1, 5.OA.A.2

    Count and subitize by playing a game.

    This activity is available for your phone in the Android Market or Apple App Store.  

    Web Interactive
    Grades: Pre K to 2nd
    Measurement & Data
    Counting & Cardinality
    Relate addition and subtraction to length.
    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, 2.MD.B.6
    Explore several different representations for fractions.
    Web Interactive
    Grades: 6th to 8th, 3rd to 5th
    The Number System
    Num & Ops Fractions
    Ratio & Proportion
    Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.
    Apply and extend previous understandings of multiplication and division to multiply and divide fractions.
    Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers.
    Reason with shapes and their attributes.
    Develop understanding of fractions as numbers.
    Solve real-life and mathematical problems using numerical and algebraic expressions and equations.
    Apply and extend previous understandings of numbers to the system of rational numbers.
    Understand ratio concepts and use ratio reasoning to solve problems.
    6.RP.A.3c, 6.NS.C.6c, 7.EE.B.3, 3.NF.A.1, 3.NF.A.2a, 3.NF.A.2b, 3.NF.A.3c, 3.G.A.2, 4.NF.B.4a, 5.NF.B.3, 7.NS.A.2d
    Explore relationships among the weights of various objects by placing them on either side of a balance.
    Web Interactive
    Grades: 3rd to 5th, 6th to 8th
    Apply and extend previous understandings of arithmetic to algebraic expressions.
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