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Pi Day · Worksheet 1

A Day for Pie, Circles, and a Very Long Number

Read the story. 英文を読もう。

ClassNo.Name
🔊 音声を聞こう

1In 1988, a scientist named Larry Shaw had a funny idea. He worked at a science museum in San Francisco. On March 14, he and other people at the museum walked around a big circle there. Then they all ate fruit pies. That was the start of Pi Day.

2So what is pi? Pi is a number. It tells us how many times the line across a circle fits into the line around it. The answer is always about 3.14. But pi never ends. After 3.14 come 159, 265, and many more digits. In America, people write the month first, so March 14 looks like 3.14.

3Why do people eat pie on this day? In English, pi and pie sound the same. Also, most pies are round like a circle. Some schools have pie parties, and some students throw cream pies at their teachers. Some people wait until 1:59 to cut their pie.

4March 14 is special for another reason, too. It is the birthday of Albert Einstein, the famous scientist. In Princeton, the town where he lived, people hold an Einstein look-alike contest. Since 2020, the day has also been the International Day of Mathematics.

5Some people try to remember as many digits of pi as they can. In 2006, a man in Japan said 100,000 digits from memory. It took him about 16 hours, and he ate rice balls during his breaks. You don't need 100,000 digits to have fun on Pi Day. Just remember 3.14, and have a slice of pie!

Words 単語
  • circle 円
  • number 数
  • digit (0〜9の)数字、けた
  • round 丸い
  • museum 博物館、美術館、科学館
  • throw 投げる
  • remember 覚えている、覚える
  • memory 記憶
  • contest コンテスト、競技会
  • look-alike そっくりさん
  • slice (薄く切った)ひと切れ
  • mathematics 数学
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 1
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Pi Day · Worksheet 2

Reading Check

Choose the best answer. 正しいものを選ぼう。

ClassNo.Name
  1. What is the story mainly about?

    A How to bake an apple pieB Why March 14 is a fun day for mathC The life of Albert EinsteinD A science museum in Japan
  2. Who started Pi Day?

    A Albert EinsteinB A teacher in PrincetonC A man in JapanD Larry Shaw
  3. Why do people in America think March 14 looks like pi?

    A Because they write the month firstB Because it is in springC Because pies are cheap thenD Because Einstein liked math
  4. How long did it take the man in Japan to say 100,000 digits?

    A About 6 hoursB About 10 hoursC About 16 hoursD About 3 days
  5. In the story, what does "from memory" mean?

    A By reading a bookB Without looking at anythingC By using a computerD With a friend's help
  6. Which sentence is true?

    A Pi ends after 100,000 digits.B Pi and pie sound different in English.C March 14 is Einstein's birthday.D Pi Day started in Japan.
  7. Why do some people cut their pie at 1:59?

    A Because 159 comes after 3.14 in piB Because lunch ends at 1:59C Because the pie is hot until thenD Because schools close at 1:59
  8. In the dialogue, what can the winner of the pi contest do?

    A Eat the whole pieB Go home earlyC Meet EinsteinD Throw a pie at Mr. Brown

True or False? 正しければ T、ちがえば F に○

  1. Pi Day is on March 14.T   /   F
  2. Pi Day started in Japan.T   /   F
  3. Pi and pie sound the same in English.T   /   F
  4. Pi ends after 3.14.T   /   F
  5. March 14 is Albert Einstein's birthday.T   /   F
  6. Japanese schools teach that pi is 3.T   /   F
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 2
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Pi Day · Worksheet 3

Word Work

Words & phrases. 単語のれんしゅう。

ClassNo.Name

① Match the pictures and the words. 絵と単語を線で結ぼう。

🥧ruler
⭕brain
🍎clock
🍕circle
🧠trophy
🏆pizza
🕐pie
📏apple

② Unscramble the words. 文字を並べ替えて単語にしよう。

  1. E L I C C R
  2. I G T I D
  3. U R D O N
  4. M R M E O Y
  5. E S C L I
  6. C E T N O S T

③ Fill in the blanks. 語群から選んで( )に入れよう。

digitsovenMarchsummerslicecirclebuyspiewinslettersleepsbestquickly

Mia's Pi Day Pie
It is (1) 14. Mia wants to make a (2) for her math class. She (3) apples at the store. At home, she puts the pie in the (4) . On top, she cuts the shape of the Greek (5) pi. At school, her teacher draws a big (6) on the board. "Who can say the most (7) ?" he asks. Mia says, "3.14159!" She (8) the contest. Everyone eats a (9) of her pie. It is the (10) Pi Day ever.

© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 3
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Pi Day · Worksheet 4

Crossword Puzzle

Read the clues and fill in the puzzle. ヒントを読んで、クロスワードを完成させよう。

ClassNo.Name
123456789101112

Across →

  1. 1 A red or green fruit. It is often in American pies. (5)
  2. 4 A famous scientist. He was born on March 14, 1879. (8)
  3. 9 A school subject with numbers. (4)
  4. 10 A round shape with no corners. (6)
  5. 12 Shaped like a ball or a coin. (5)

Down ↓

  1. 2 A round food. It sounds like the name of the number 3.14. (3)
  2. 3 The third month of the year. (5)
  3. 5 One piece of a cake or a pizza. (5)
  4. 6 One, two, three, and 3.14 are all examples. (6)
  5. 7 One number from 0 to 9. (5)
  6. 8 Your brain uses this to keep words and numbers. (6)
  7. 11 A building where you can see art or science. (6)
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 4
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Pi Day · Worksheet 5

Word Search

Find the hidden words. かくれた単語を探そう(→ ↓ ↘ ↗)。

ClassNo.Name
PAMVJORFJGCCVCPAEMEFMWNOUIMPTMBAMPTHNDEELHMSCRFIVTYDMEUJWIHCGEEAWONSTTRFUHTSWBRBLIVCEHJVTLFYFGERLSLICEFWGIRYEEINSTEINDVLAWEMUSEUMAKKROUNDEBLBFLBCNDLOMSDYCLPPLADDYFVVHMTI

Find these words! 13

  • ☐ APPLE
  • ☐ CIRCLE
  • ☐ CONTEST
  • ☐ DIGIT
  • ☐ EINSTEIN
  • ☐ MARCH
  • ☐ MATH
  • ☐ MEMORY
  • ☐ MUSEUM
  • ☐ NUMBER
  • ☐ PIE
  • ☐ ROUND
  • ☐ SLICE

Secret Code 暗号を解こう! 記号を文字に直すと、メッセージが出てくるよ。

☎A✚D♦H☂I◆P✉Y
♦☎◆◆✉
◆☂
✚☎✉
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 5
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Pi Day · Worksheet 6

Maze & Sentences

ClassNo.Name

Help Mia carry her pie to the math class!

Collect the letters on the right path. What is the secret word? 正しい道の文字を集めると、ひみつの言葉になるよ。

CIRCLEYFPFSUIATC👧🥧STARTGOAL

Secret word:

Put the words in order. 並べ替えて正しい文にしよう。

  1. Day / Pi / is / 14 / March / on .
  2. Most / pies / round / are / circle / like / a .
  3. the / sound / same / pie / and / Pi .
  4. said / memory / the / digits / He / from .
  5. throw / students / teachers / at / their / Some / pies .
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 6
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Pi Day · Worksheet 7

Class Activity & Writing

ClassNo.Name

Find Someone Who… クラスで聞いて回ろう! Ask: "Do you …?" / "Have you …?"

Find someone who …Name
… can say pi to five digits
… likes apple pie
… knows who Albert Einstein was
… has baked a pie or a cake
… has a birthday in March
… likes math
… has visited a science museum
… can draw a circle without a tool

Let's Write! 英語で書いてみよう。

On Pi Day, I want to eat ______ pie because ______.

If I could make a new math holiday, it would be on ______ because ______.

One thing I like about math is ______.

© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 7
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Pi Day · Worksheet 8

Trace & Color

Trace the words. Then color the picture! なぞって書こう。絵に色を塗ろう。

ClassNo.Name
🥧
pie
⭕
circle
🍎
apple
🍕
pizza
ぬりえ
© 原田英語 | 世界の行事・祝日ナビ | haradaeigo.com/holiday/Pi Day · 8