Welcome back ! Please make sure to take a good look around the website each week for new activities.
Grade 4:
how to tell time with digital and analog clocks, using 12 and 24-hour clocks
Grade 5:
duration, using measurements of time and elapsed time
Video: Review elapsed time using a number line to solve word problems.
FUN FACT
Lightning hits the earth at a rate of 6,000 strikes per minute, or 100 strikes per second. Luckily, the odds of being struck by lightning are pretty low.
Use a number line (or another strategy) to determine the time from when you woke up until you had your lunch. How many hours, minutes and seconds?
Video : Elapsed time counting backwards using a number line
Time passes faster for your face than for your feet (assuming you're standing up). Einstein's theory of relativity dictates that the closer you are to the centre of the Earth, the slower time goes – and this has been measured. At the top of Mount Everest, a year would be about 15 microseconds shorter than at sea level!
We got stopped by a train for 32 minutes. We crossed the railroad tracks after the train passed at 6:12. What time did we get stopped by the train?
Watch this video (elapsed time using a number line) and then solve the problems below.
On the planet Mercury, a single day is two Earth years long!
Watch video: (telling time with analog and digital clocks)
How long can you keep your eyes open without blinking?
How long does it take you to do 25 jumping jacks?
Set your timer for 2 minutes. Put your arms out to your sides. GO! Why do you think that felt like a long time?
For hundreds of years, people used burning candles, dripping water (known as water clocks), or sifting sand to tell time’s passage. People still use sand clocks or hour glasses to keep time.
Challenge: How many times can you write your name in a minute?