Estimate how long it takes to shake hands with a friend.
Day
Minute
Second
Hour
Estimate how long it takes for the grass to grow 5 cm
Minute
Day
Hour
Week
Estimate how long it takes to built a school
Week
Year
Day
Month
An planned a holiday to last two weeks. He left on 2nd September. When did he arrive home?
14th September
Three weeks before 23rd September is National day. What date is that?
2nd September
Mira turns 25 years old on 5th July. Linh turns 25 years old on 31st July. How many days older is Mira?
26 days
