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| 1 | Straw flute | Straw flute |
| 2 | 3 in 1 toy | 3 in 1 toy |
| 3 | Double straw spinner | Double straw spinner |
| 4 | Straw spinner | Straw spinner |
| 5 | Anti gravity funnel | Anti gravity funnel |
| 6 | Straw worm model | Straw worm model |
| 7 | Puppeteer whistle | Puppeteer whistle |
| 8 | Magnetic geometry | Magnetic geometry |
| 9 | Bird whistle | Bird whistle |
| 10 | Pascal bag | Pascal bag |
| 11 | Hand pump | Hand pump |
| 12 | Double hand pump | Double hand pump |
| 13 | Smart siphon | Smart siphon |
| 14 | Vasudha vaika pyula | Vasudha vaika pyula |
| 15 | Straw siphon | Straw siphon |
| 16 | Self starting siphon | Self starting siphon |
| 17 | Anti gravity fountain | Anti gravity fountain |
| 18 | HEIGHT MIGHT | HEIGHT MIGHT |
| 19 | BOYLES SYRINGE | BOYLES SYRINGE |
| 20 | Bottle Turbine | Bottle Turbine |
| 21 | TETRAHEDRON | TETRAHEDRON |
| 22 | CUBE | CUBE |
| 23 | OCTAHEDRON | OCTAHEDRON |
| 24 | DODECAHEDRON | DODECAHEDRON |
| 25 | CIRCLING AROUND A GEAR | CIRCLING AROUND A GEAR |
| 26 | TRAMMEL 4 | TRAMMEL 4 |
| 27 | TRAMMEL 6 | TRAMMEL 6 |
| 28 | GEAR JACK | GEAR JACK |
| 29 | HAMILTONIAN PATH | HAMILTONIAN PATH |
| 30 | REAULEUX CAR | REAULEUX CAR |
| 31 | LEVER SYSTEM | LEVER SYSTEM |
| 32 | OPTICAL BENCH | OPTICAL BENCH |
| 33 | PERISCOPE | PERISCOPE |
| 34 | SINE WAVE CAR | SINE WAVE CAR |
| 35 | TRIANGULAR WAVE CAR | TRIANGULAR WAVE CAR |
| 36 | CYCLOID CAR | CYCLOID CAR |
| 37 | STRAIGHT LINE DRAWER | STRAIGHT LINE DRAWER |
| 38 | VERTICAL PEN STAND | VERTICAL PEN STAND |
| 39 | PULLEY SYSTEM | PULLEY SYSTEM |
| 40 | GEAR LAMP | GEAR LAMP |
| 41 | A4 Sheet Ratio of Sides | A4 Sheet Ratio of Sides |
| 42 | Who feels colder Baby or Adult | Who feels colder Baby or Adult |
| 43 | Adult Square Roots in A4 | y or Adult Square Roots in A4 |
| 44 | root spirel | root spirel |
| 45 | Cutting a Newspaper and getting Isosceles Triangle | Cutting a Newspaper and getting Isosceles Triangle |
| 46 | Equilateral Triangle from A4 Sheet. | Equilateral Triangle from A4 Sheet. |
| 47 | Largest Equilateral Triangle from A4 Sheet | Largest Equilateral Triangle from A4 Sheet |
| 48 | Largest Equilateral Triangle from a Square. | Largest Equilateral Triangle from a Square. |
| 49 | Going to the Moon | Going to the Moon |
| 50 | Convert A4 Sheet to Square Using all the Paper | Convert A4 Sheet to Square Using all the Paper |
| 51 | A4 Sheet to Rectangle of Given Size | A4 Sheet to Rectangle of Given Size |
| 52 | Beautiful Paper Folding Knot Technique | Beautiful Paper Folding Knot Technique |
| 53 | Fold A4 Sheet Once to get Shapes | Fold A4 Sheet Once to get Shapes |
| 54 | Triangle to Square of Same Area | Triangle to Square of Same Area |
| 55 | Circle to Cone | Circle to Cone |
| 56 | Largest Cones from Same Circle | Largest Cones from Same Circle |
| 57 | Regular Polygon Using a Cone | Regular Polygon Using a Cone |
| 58 | Geometric Series | Geometric Series |
| 59 | Regular Pentagon from Paper Folding | Regular Pentagon from Paper Folding |
| 60 | Knot Magic | Knot Magic |
| 61 | SUM OF INTERIOR ANGLES OF A TRIANGLE | SUM OF INTERIOR ANGLES OF A TRIANGLE |
| 62 | SUM OF INTERIOR ANGLES OF A TRIANGLE VERSION 2 | SUM OF INTERIOR ANGLES OF A TRIANGLE VERSION 2 |
| 63 | SUM OF INTERIOR ANGLES OF A QUADRILATERAL | SUM OF INTERIOR ANGLES OF A QUADRILATERAL |
| 64 | SUM OF INTERIOR ANGLES OF A POLYGON | SUM OF INTERIOR ANGLES OF A POLYGON |
| 65 | PROPERTIES OF A CIRCLE | PROPERTIES OF A CIRCLE |
| 66 | TANGENT FROM AN EXTERNAL POINT | TANGENT FROM AN EXTERNAL POINT |
| 67 | CORRESPONDING AND ALTERNATE ANGLES | CORRESPONDING AND ALTERNATE ANGLES |
| 68 | FRACTIONS | FRACTIONS |
| 69 | AREA OF A TRIANGLE ACUTE | AREA OF A TRIANGLE ACUTE |
| 70 | AREA OF A TRIANGLE ACUTE | AREA OF A TRIANGLE ACUTE |
| 71 | AREA OF A TRIANGLE SLICE | AREA OF A TRIANGLE SLICE |
| 72 | AREA OF A PARALLELOGRAM | AREA OF A PARALLELOGRAM |
| 73 | AREA OF A TRAPEZIUM | AREA OF A TRAPEZIUM |
| 74 | AREA OF A POLYGON PICKS THEOREM | AREA OF A POLYGON PICKS THEOREM |
| 75 | a plus b squre | a plus b squre |
| 76 | a - b2 | a - b2 |
| 77 | SUM OF FIRST N NUMBERS | SUM OF FIRST N NUMBERS |
| 78 | SUM OF ODD NUMBERS | SUM OF ODD NUMBERS |
| 79 | SUM OF CUBES | SUM OF CUBES |
| 80 | SUM OF SQUARE OF HEMCHANDRA NUMBERS | SUM OF SQUARE OF HEMCHANDRA NUMBERS |
| 81 | SUM OF GP | SUM OF GP |
| 82 | SUM OF GENERAL INFINITE GP | SUM OF GENERAL INFINITE GP |
| 83 | MISSING AREA PUZZLE | MISSING AREA PUZZLE |
| 84 | MAGICAL RATIO OF A4 | MAGICAL RATIO OF A4 |
| 85 | RECTANGLE TO SQUARE SLIDING METHOD | RECTANGLE TO SQUARE (SLIDING METHOD) |
| 86 | RECTANGLE TO SQUARE PARALLELOGRAM METHOD | RECTANGLE TO SQUARE PARALLELOGRAM METHOD |
