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### Theory

 1 Recall the concept of rational numbers 2 Denses property of rational numbers 3 More about rationals 4 Irrational numbers 5 How to represent irrational number in number line 6 General procedure to construct square root 7 Operations on irrational numbers

### Exercises

 1 Choose the cooresponding coordinate Difficulty: easy 3 2 Say true or false Difficulty: easy 4 3 Locating a point in number line Difficulty: easy 2 4 Classify rational or irrational number Difficulty: medium 4 5 Difference of two numbers in the expression Difficulty: medium 3 6 Find a rational number between two numbers Difficulty: medium 3 7 Test the expression is rational or irrational Difficulty: medium 3 8 Determine the rational number between two numbers Difficulty: hard 4 9 Determine the first five rational number between two numbers Difficulty: hard 7.5 10 Determine the five rational numbers using two rational numbers Difficulty: hard 9 11 Calculate the five rational numbers between two rational numbers Difficulty: hard 8

### Tests

 1 Training test Difficulty: medium 9

### Teacher manual

 1 Methodical recommendation