• Concentration

    Grade: PreK to 2nd, 3rd to 5th

    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. How many socks can you win? 




    • Level:
      • numbers 1-6
      • numbers 1-10
      • geometric shapes
      • multiplication facts
      • fractions
      • fractions, decimals, and percents
    • Players: one or two players
    • Games: hidden (covered windows) or revealed (glass windows)

    How to Play

    • Within the game, choose any two windows.
    • If the images under the selected windows are equivalent, a match is made.
    • In one-player mode, the game ends when all six matches are made. In two-player mode, points are earned for matches, and the player with the most points wins.
    • Wins will translate into socks, which will hang in between the buildings.


    Try creating your own game of concentration use index cards to teach any math topic.

    For example, you could show a linear equation and match it up with its graph or table of values.

    Objectives and Standards

    NCTM Standards and Expectations
    • Geometry / Measurement
    • Number and Operations
    • Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
    • Pre-K - 2
    • 3-5
    • Geometry
    • Number and Operations