Ayat matematik: 1 jam 45 minit + 2 jam 30 minit = 4 jam 15 minit. Bolehkah kamu mereka satu cerita tentang masa yang sepadan dengan ayat ini?
编故事 = reka cerita;时间算式 = ayat matematik masa
这一课倒过来做:先有时间算式,再想一个生活故事配合它。算式 1 jam 45 minit + 2 jam 30 minit = 4 jam 15 minit 里有两段时间被加起来,所以故事里要有两件事各用了多少时间,最后问一共用了多久。故事要说清楚:谁、做什么、用了多少时间。
例子:Lina 星期六看书 1 jam 45 minit,星期日看书 2 jam 30 minit,两天一共看了 4 jam 15 minit。
注意:故事里的时间长短要合乎常理,看书不会只用 5 saat。
making up a story = reka cerita; time number sentence = ayat matematik masa
This unit works backwards: we start with a time sum and invent a real-life story that fits it. In 1 jam 45 minit + 2 jam 30 minit = 4 jam 15 minit, two lengths of time are joined, so the story needs two activities with their durations and a question about the total time. Say clearly who does what and for how long.
Example: Lina reads for 1 hour 45 minutes on Saturday and 2 hours 30 minutes on Sunday, so she reads 4 hours 15 minutes in all.
Watch out: the times must make sense in real life; nobody reads a book in 5 seconds.
Langkah 1
Lihat simbol, pilih kata kunci
Setiap simbol ada kata kunci sendiri
simbol
kata kunci
contoh ayat
+
jumlah masa, semuanya
Jumlah masa membaca ialah …
−
beza masa, lebih lama
Ali berlatih 1 jam 45 minit lebih lama …
×
sama setiap kali, beberapa kali
1 jam 15 minit setiap helai, 3 helai …
÷
sama panjang, setiap satu
4 bilik, masa sama untuk setiap bilik …
符号 = simbol;关键词 = kata kunci;总时间 = jumlah masa;时间差 = beza masa
第一步看符号选关键词。+ 的故事讲“一共用了多久”(jumlah masa);− 的故事讲“谁比谁久多少”或“还剩多少时间”(beza masa、lebih lama);× 的故事要有“每次用一样的时间,做了几次”;÷ 的故事要有“一段时间平均分给几件事,每件一样长”。
例子:看到 × 3,故事里就要写“做了 3 次,每次 1 jam 15 minit”。
注意:× 和 ÷ 后面的数字是次数或件数,不是时间,不要写成 3 minit。
symbol = simbol; key word = kata kunci; total time = jumlah masa; difference in time = beza masa
Step one is to read the symbol and pick key words. A plus story asks how long altogether (jumlah masa). A minus story asks how much longer one took, or how much time is left (beza masa, lebih lama). A times story needs the same time repeated a number of times. A divide story needs one length of time split equally among several jobs.
Example: when you see × 3, the story must say the job was done 3 times, each taking 1 jam 15 minit.
Watch out: the number after × or ÷ counts times or items; it is not a time, so never write it as 3 minit.
Langkah 2
Cerita tambah dan cerita tolak
Siapa → buat apa → berapa lama → soalan
Cerita tambah · 1 jam 45 minit + 2 jam 30 minit = 4 jam 15 minit
Lina membaca buku cerita selama 1 jam 45 minit pada hari Sabtu dan 2 jam 30 minit pada hari Ahad. Jumlah masa Lina membaca ialah 4 jam 15 minit.
Cerita tolak · 3 jam 20 minit − 1 jam 35 minit = 1 jam 45 minit
Ali berlatih bola sepak selama 3 jam 20 minit. Abangnya berlatih 1 jam 35 minit. Ali berlatih 1 jam 45 minit lebih lama daripada abangnya.
加法故事 = cerita tambah;减法故事 = cerita tolak;比……久 = lebih lama daripada
加法故事:Lina 星期六看书 1 jam 45 minit,星期日看 2 jam 30 minit,两天加起来是 4 jam 15 minit。减法故事换成比较:Ali 练足球 3 jam 20 minit,哥哥练 1 jam 35 minit,Ali 比哥哥多练 1 jam 45 minit。两个故事都是“人物 + 活动 + 时间 + 最后一句说答案的意思”。
例子:煮饭用了 40 minit,煮汤用了 25 minit,煮饭比煮汤多用 15 minit,这也是减法故事。
注意:减法故事的最后一句要说“多多久”或“少多久”,不要写成“一共”。
plus story = cerita tambah; minus story = cerita tolak; longer than = lebih lama daripada
The plus story: Lina reads for 1 jam 45 minit on Saturday and 2 jam 30 minit on Sunday, which joins up to 4 jam 15 minit. The minus story compares instead: Ali trains for 3 jam 20 minit, his brother for 1 jam 35 minit, so Ali trains 1 jam 45 minit longer. Both stories have a person, an activity, the times, and a last sentence that explains the answer.
Example: cooking rice takes 40 minutes and cooking soup takes 25 minutes, so rice takes 15 minutes longer; that is also a minus story.
Watch out: a minus story ends with how much longer or shorter, never with altogether.
Cuba
Cerita manakah sepadan dengan ayat ini?
3 jam 20 minit − 1 jam 35 minit = 1 jam 45 minit
比较两段时间 = bandingkan dua masa
符号是 −,故事要比较两段时间,关键词是 lebih lama。Puan Ros 开车 3 jam 20 minit,Encik Ravi 开 1 jam 35 minit,Puan Ros 多开了 1 jam 45 minit,这个对。第二个故事说“再开 1 jam 35 minit,一共……”,那是加法,而且一共应该是 4 jam 55 minit。第三个故事“每天、3 天”是乘法。
例子:姐姐睡午觉 1 jam 10 minit,妹妹睡 40 minit,姐姐多睡 30 minit。
注意:先用符号判断故事类型,再核对数字。
comparing two times = bandingkan dua masa
The symbol is −, so the story must compare two lengths of time, with the key word lebih lama. Puan Ros drives for 3 jam 20 minit and Encik Ravi for 1 jam 35 minit, so Puan Ros drives 1 jam 45 minit longer; that fits. The second story adds another 1 jam 35 minit, which is a plus story whose total would be 4 jam 55 minit. The third story, every day for 3 days, is a times story.
Example: big sister naps for 1 hour 10 minutes and little sister for 40 minutes, so big sister naps 30 minutes longer.
Watch out: decide the story type from the symbol first, then check the numbers.
Langkah 2
Cerita darab dan cerita bahagi
Darab: masa sama, beberapa kali · Bahagi: sama panjang
Cerita darab · 1 jam 15 minit × 3 = 3 jam 45 minit
Kak Nora menjahit sehelai baju kurung dalam masa 1 jam 15 minit. Dia menjahit 3 helai baju yang sama. Jumlah masa ialah 3 jam 45 minit.
Cerita bahagi · 5 jam 20 minit ÷ 4 = 1 jam 20 minit
Encik Ravi mengecat 4 buah bilik dalam masa 5 jam 20 minit. Masa untuk setiap bilik sama panjang. Setiap bilik mengambil masa 1 jam 20 minit.
乘法故事 = cerita darab;除法故事 = cerita bahagi;一样长 = sama panjang
乘法故事:Kak Nora 缝一件 baju kurung 要 1 jam 15 minit,缝了 3 件一样的,一共 3 jam 45 minit。这里 3 是件数,1 jam 15 minit 是每件的时间。除法故事:Encik Ravi 用 5 jam 20 minit 油漆 4 间房,每间用的时间一样长,所以每间 1 jam 20 minit。
例子:每天浇花 20 minit,浇 5 天是 1 jam 40 minit(乘);2 jam 洗 4 辆车,每辆一样久,每辆 30 minit(除)。
注意:除法故事一定要写“sama panjang”或“masa sama”,不然看不出是平均分。
times story = cerita darab; divide story = cerita bahagi; equally long = sama panjang
The times story: Kak Nora sews one baju kurung in 1 jam 15 minit and sews 3 identical ones, taking 3 jam 45 minit altogether. Here 3 counts the pieces and 1 jam 15 minit is the time for each. The divide story: Encik Ravi paints 4 rooms in 5 jam 20 minit, every room taking the same time, so each room takes 1 jam 20 minit.
Example: watering plants 20 minutes a day for 5 days takes 1 hour 40 minutes (times); washing 4 cars in 2 hours at the same pace gives 30 minutes per car (divide).
Watch out: a divide story must say sama panjang or masa sama, or readers cannot tell the time is shared equally.
matching sums to stories = padankan ayat dengan cerita
The symbol tells you the match: + goes with total reading time over two days; − goes with training longer than the brother; × 3 goes with 3 pieces of clothing at 1 jam 15 minit each; ÷ 4 goes with 4 rooms taking equal time. No working is needed, only spotting what kind of action each symbol describes.
Example: for ÷ 4, look for the card that mentions 4 rooms and sama panjang.
Watch out: the 3 and the 4 count items, so the story says 3 helai and 4 buah, never a time.
sensible = munasabah
A story for 2 minit 30 saat × 4 needs the same time repeated 4 times, and that time must be realistic. Brushing teeth for 2 minit 30 saat, 4 times, makes 10 minit; that is sensible. Driving from Kota Kinabalu to Kudat in 2 minit 30 saat is impossible, since it takes hours. The third story adds two different people's times, and 2 minit 30 saat + 4 minit is not 10 minit anyway.
Example: washing hands for 30 seconds, 6 times, takes 3 minutes; that is realistic.
Watch out: after writing a story, ask yourself whether anything in real life really goes that fast or that slow.
Ringkasan
Syabas!
simbol → kata kunci → situasi munasabah → ayat terakhir
Lihat simbol: + jumlah masa, − lebih lama, × masa sama beberapa kali, ÷ sama panjang. Pilih situasi harian dengan masa yang munasabah, dan tamatkan cerita dengan maksud jawapan.