Industrial  81

• Geogrpahy 2
• Envorinment 6
• Material 52
• Mechanical 15
• Building 6

Life  145

• Daily 91
• Financial 4
• Insurance 1
• Health 49

Conversion  39

• Time date 2
• Length angle 4
• Speed rate 2
• Mass weight 6
• Power, energy 17
• Other conversions 8

Physical  342

• Electricity 5
• Electronic 96
• Classic physics 208
• Molecular atom 11
• Reaction 22

Mathematical  199

• Algebraic 26
• Geometric 161
• Trigonometric 1
• Probability 11

IT  21

• Computer 10
• Web 11

Computational Game

• Basic arithmetic operations