1000.15 | Telling Time Backwards, Part I |
1000.21 | Floor Tile Reflection no. 1 |
1000.81 | Continue the Pattern |
1000.91 | Chessboard Dominoes |
1007.11 | The Impossible Path |
1009.31 | Counting Squares |
1020.12 | Covered Shapes |
1020.42 | Overlapping Squares |
1020.51 | Manhole Covers |
1027.11 | Partition This Shape no. 1 |
1027.14 | Partition This Shape no. 4 |
1027.15 | Partition This Shape no. 5 |
1040.11 | Ten Peach Trees |
1070.19 | Watson's Purchase |
1070.21 | Grandfather Clock Strikes |
1090.21 | Labeled Cube Views |
1090.42 | Six Toothpicks |
1090.71 | Twenty-Seven Little Cubes |
1090.73 | Cutting a White Pine |
1090.74 | How Big is This Cube? |
1090.75 | Fly on the Cube |
1100.51 | Agatha the Cow |
1100.71 | Martha the Grocer and her Two-Pan Scale |
1110.61 | Security Guards |
1130.11 | A Magic Square with Primes |
1180.37 | Dogs, Cats, Snakes |
1180.43 | Gleepers & Blahmies |
1230.44 | Glenda Aces a Quiz |
1230.53 | Who is in Which Family? |
1230.63 | Maurice’s Video Games |
1240.11 | A Fox, a Goose, and a Bag of Corn |
1250.11 | False Coin no. 1 |
1250.12 | False Coin no. 2 |
1250.13 | False Coins no. 3 |
1260.21 | Handshakes; Fly on the Wall |
1290.14 | Gym Class |
1310.25 | Super Venn Diagram |
1331.14 | Difference of Squares |
1332.11 | Whole Number Radicals |
1340.41 | LOVE |
1340.42 | MISERABLE |
1370.21 | Dust Mites |
1510.42 | Farmer Fox |
1550.22 | In A Dream |
1550.24 | Sibyl Bibble |
1550.25 | Tree and Nests |
1550.27 | Mr. Adams's Will |
1550.39 | Trading Cards |
1550.43 | A Horse and a Mule Converse |
1650.31 | Divisibility Theorem (Sum) |
1720.41 | Patterned Equations |
1730.41 | Need More Money? |
2070.22 | Alyssa's Formula |
2100.12 | Who's The Champion? |
2100.33 | Sum of Odd Numbers |
2100.52 | Rational Expressions, Laws of Exponents |
2110.12 | Giant Distribution |
2150.21 | Reciprocal Symmetry |
2150.41 | Adding x to Numerator and Denominator |
2150.62 | Lowest Terms? |
2162.11 | An Infinite Continued Fraction |
2200.61 | Holstein or Guernsey? |
2210.71 | Point on a Line. Making a Triangle? |
2230.51 | Jessamine Bush |
2260.21 | A Fourth Degree Equation |
2290.11 | The Dutch Miller |
2290.21 | Ratio-Difference-Sum-Ratio |
2410.21 | Tennis Team |
2420.41 | The Cow, the Goat, and the Wildebeest |
2440.11 | Beef's Lost Loot |
2440.12 | Orthodontist |
2440.13 | Driving to Nirvana |
2440.14 | Trains DC-NYC |
2440.31 | Columbus to Cincinnati |
2440.33 | Susu the Cat |
2440.41 | York to London |
2440.51 | Race to the Bus |
2440.70 | Snow Tires Versus Ordinary Tires |
2442.52 | Daniel Boone on Plum Creek |
2452.13 | Fifty Mycologists |
2500.21 | Finding Sides of a Triangle |
2500.31 | Foxes and Owls |
2500.63 | Kumquat House Numbers |
2510.11 | Defined Operation no. 1 |
2510.21 | Defined Operation no. 2 |
2530.52 | Defined Operation 4; Do Composition |
2850.21 | Situps |
2850.65 | A Sequence by Subtraction |
2870.11 | Levy's Basketball |
3050.12 | Bugs on a Branch |
3060.51 | Red and Blue Point Line Segment |
3065.11 | Red/Blue Tubular Neon Lights |
3070.11 | Algebra with Angles |
3070.12 | A Supplement/Complement Conjecture |
3150.11 | Calculating an Angle |
3155.22 | A Triangular Garden |
3155.41 | A Mystery Angle |
3160.11 | Triangle ABC is Isosceles |
3261.11 | Quadrilateral BCDF is a Rhombus |
3305.51 | Making a Regular Octagon |
3305.52 | Stop Sign |
3320.21 | A Square Inside a Circle Inside a Square |
3321.11 | A Circle and A Square |
3350.11 | Overlapping Parallelograms |
3360.11 | Mystery Trapezoid |
3405.12 | Impossible Rectangle? |
3420.22 | The Area of a Cross |
3420.25 | The Sum of Two Triangles |
3420.29 | Midline Triangle |
3420.41 | Dance of the Area Bisectors |
3420.73 | Crazy Baseball Diamond |
3440.12 | Billy the Goat |
3440.13 | A Girl and Her Dog |
3440.31 | A Lovely Circular Lawn |
3440.51 | Fraction of a Circular Area |
3470.14 | Square with Internal Segments |
3470.32 | Cardboard Box |
3475.11 | The Unknown Edge |
3550.21 | Clock with Revolutionary Bug |
3580.14 | Akashi-Kaikyo Bridge |
3590.11 | Parallelogram and a Geometric Mean |
3650.14 | Tennis Balls |
3650.21 | Two Barrels |
3650.31 | Volume and Surface Area of a Cube |
3695.11 | A Square in a Cube |
3750.21 | Negating Barbells |
3750.41 | Find the Falsehoods |
3750.61 | Pickled Walnuts |
3750.74 | Toxic Tangles |
3850.14 | Where Are The Crumbs? |