BlueJ

 FIRST TASK

 Here are some optical illusions. Try to solve them

1. Are the lines going horizontaly, straight?

2. Saxophone player or a girls face?

3. Are the dice stacked up on top of each other?

4.Stare at the black cross in the middle. What happens? 

5. Is it a old woman's face or a young woman's?

6. Stare at the red dot in the middle of the flag for about 10 to 20 sec.

    then look at the other red dot. You may blink a couple of times.