Educator Ruth Mork teaches kids about clocks — from sundials to cuckoo clocks to roosters. Ruth Mork introduces clocks of all kinds — sundials, candle clocks, hourglasses, cuckoos, even a rooster! She ...

You know 'clock' – you look at it to check the time, it can be analogue or digital and you see them on the walls in buildings! There are some English phrases with the word 'clock' – learn some of them ...