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Quick jobs, slow jobs
Joyful Mathematics: Chapter 10
GoalSay which job takes a longer time and which takes a shorter time.
New words
quick · takes a short timeslow · takes a long timetakes longer · needs more time
Explanation
Some jobs are quick. A sneeze is very quick. Drinking a glass of water takes a little time. Cooking rice takes longer. A seed takes many days to grow into a plant. To compare two jobs, ask which one is over first.
Worked examples
Eating a banana takes less time than eating a full meal.
Washing one spoon is quick. Washing all the bowls takes longer.
Yawning takes a short time. Sleeping takes much longer.
Class activity
Count the claps. Ask a friend to clap slowly while you do a job. Zip your bag, put on one sock, drink a glass of water, build a tower of 5 blocks. How many claps did each job take? Which job took the longest?
Practice
1
Which takes longer, reading a book or turning a page?
Reading a book.
2
Which takes less time, tying a shoelace or walking to school?
Tying a shoelace.
3
Which takes longer, blowing out a candle or baking a cake?
Baking a cake.
4
Name one job that takes a very long time.
Any sensible job, such as growing a tree.
5
Which takes a shorter time, a blink or a nap?
A blink.