Logic Puzzles, Thinking, and Strategy Games

Guess My Button - a logic puzzle
One False Move - arrange numbers from lowest to highest (including negative numbers!)
Power Card Game
Logic Puzzle Using a Venn Diagram
Play "Mastermind" against the computer at this way cool site!
Play "Rush Hour" Online
Play "Reversi" (Othello)
Play "Connect Four"
Play the Pentominoes Game
Play "Clever Pegs" Game
Play "Fenced In" Game
Play "Four's A Winner" - otherwise called "The Product Game" on this site
Play "Tea Tricks" (Tetris)
Play "Tetris"
Play "Mancala"
Solve Puzzles.com - lots of puzzles to bend your mind
Play "Flaps"
Print a Yahtzee Scorecard

Manipulatives

Pattern Block Play
Polygon Playground - move the shapes & play
Geoboard Paper Drawing Fun - draw & build to your heart's content!
Use the Balance to figure equivalent items
National Library of Virtual Manipulatives for grades 3-5 from Utah State University. This site is so amazing!!!  It has interactive activities for just about every strand of math
E-Manipulatives 4th Grade (You can change the grade level) - from EduPlace - great site
Soda Constructor - animate and make models & run simulations - cool
Playing with Tangrams
Interactive Online Spinner
Virtual Dice

Mathematicians

Famous Mathematicianshttp://www.learner.org/teacherslab/math/patterns/buttons/http://www.funbrain.com/ofm/index.htmlhttp://math.rice.edu/~lanius/pro/power.htmlhttp://www.kidport.com/Grade7/TAL/Reasoning.htmhttp://matti.usu.edu/nlvm/nav/frames_asid_179_g_2_t_1.htmlhttp://www.thekidzpage.com/freekidsgames/games/rush/index.htmhttp://www.artifactinteractive.com.au/arcade/reversi.htmlhttp://www.mathsisfun.com/games/connect4.htmlhttp://fen.com/studentactivities/Pentominoes/pentominoes.htmlhttp://fen.com/studentactivities/pegs/cleverpegs.htmlhttp://www.funranch.com/games/fence/fence.htmhttp://illuminations.nctm.org/mathlets/product/index.htmlhttp://www.bitstorm.org/teatricks/http://www.surfnetkids.com/games/tetris.htmhttp://www.rocketsnail.com/mancala/classic.htmhttp://www.solvepuzzles.com/http://www.free-web-games.com/games/flapsjr.htmlhttp://www.eecis.udel.edu/~davis/yahtzee.pdfhttp://ejad.best.vwh.net/java/patterns/patterns_j.shtmlhttp://www.mathcats.com/explore/polygonplayground.htmlhttp://illuminations.nctm.org/mathlets/isometric/index.htmlhttp://illuminations.nctm.org/mathlets/shapebalance/index.htmlhttp://matti.usu.edu/nlvm/nav/grade_g_2.htmlhttp://www.eduplace.com/kids/mw/manip/mn_4.htmlhttp://www.sodaplay.com/constructor/index.htmhttp://standards.nctm.org/document/eexamples/chap4/4.4/standalone1.htmhttp://nlvm.usu.edu/en/nav/frames_asid_186_g_1_t_1.htmlhttp://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks1/maths/dice/http://euler.ciens.ucv.ve/English/mathematics/shapeimage_2_link_0shapeimage_2_link_1shapeimage_2_link_2shapeimage_2_link_3shapeimage_2_link_4shapeimage_2_link_5shapeimage_2_link_6shapeimage_2_link_7shapeimage_2_link_8shapeimage_2_link_9shapeimage_2_link_10shapeimage_2_link_11shapeimage_2_link_12shapeimage_2_link_13shapeimage_2_link_14shapeimage_2_link_15shapeimage_2_link_16shapeimage_2_link_17shapeimage_2_link_18shapeimage_2_link_19shapeimage_2_link_20shapeimage_2_link_21shapeimage_2_link_22shapeimage_2_link_23shapeimage_2_link_24shapeimage_2_link_25shapeimage_2_link_26shapeimage_2_link_27shapeimage_2_link_28
Logic Puzzles Thinking, and Strategy Games
Manipulatives
Mathematicians