and a substantial knowledge of Sudoku solving techniques. Once you know these Sudoku tips, you will be able to solve even the most challenging puzzle. What are the basic rules of Sudoku?

Teaching methods are the broader techniques used to help students achieve learning outcomes, while activities are the different ways of implementing these methods. Teaching methods help students: ...

Welcome to our free impossible sudoku games. Fill in each square with a number, making sure no number repeats in each column or row. Check back every Sunday for a new puzzle or explore ones we ...

Welcome to our puzzle section, with online games you can play anywhere! We are excited to present old favorites, like our Daily Crossword and Daily Sudoku, and recently added Word Searches. Enjoy!

You can now play a range of puzzles on our site, from sudoku to crosswords, every weekday. The puzzles will update every weekday at midnight so make sure you bookmark the links to play.

Here are a few elements that add to this complexity, and techniques to solve these challenges: 1) Data transformations: Every mainframe stores data in a certain way—and if you’re using an ...

Optical techniques are methods that use light to probe or control matter. One prominent example is optical spectroscopy, which includes such methods as pump–probe spectroscopy, Raman ...

Division is the opposite of multiplication. Move all the numbers to the opposite (right) side of the equation so you can do division. Experience Mathematica as you’ve never seen it before, with ...

Simultaneous equations like 𝒚 = 2𝒙 - 1 and 𝒚 = 𝒙 + 1 can be represented graphically. To solve the equations graphically, the two lines 𝒚 = 𝒙 + 1 and 𝒚 = 2𝒙 - 1 are drawn on ...