Md Arifuzzaman

Can you be safe from blades? Don't cut your finger! Touch the screen but not the blades - that's it to start! But the blades are moving, so how long c …

Can you make the line? Yes, of course you can. You are already doing this in your life! We are all time sorting our lines of life. Some of them are al …

How much can you imagine when you see a picture? If it is 4 pictures, can you rearrange them to a meaningful order? You don't have to write anything, …

You may drive your car all the time but have you ever flown a helicopter being a pilot? Well, may be not or yes, but did you race with others? . . So …

An innocent ball has been trapped by an angry wheel. The wheel has kept the ball on it's center and showing many paths to escape the wheel, but there …

Can you remember your drawing classes at your primary school? Which colors, mixing with them, make which color? Like red and yellow make orange, blue …