Italicized links open a new window to an external site

Click here to display our home page

Lesson Ideas
Main Events

Click here for information about this NASA image

The World in a Room

Here is a way to get students to understand world population statistics, and a bit of geography to boot.  You may use other topics too.  If you're looking for information about specific nations and global issues, try The CIA World Factbook or World Audit

For those with classes made up of greater or fewer than 35 students, I have created this Microsoft Excel workbook.  With it you can enter the number of students in your class (or other group), then immediately see how that group would depict the statistics in the population, language, religious affiliation, income and age tables below.  It also contains additional worksheets with updated world population and religious affiliation tables. To save the workbook file, right click on its link above then choose Save Target As and specify the location to which you want it saved. You may also click on the file's link.  If you have Quick View+ installed on your computer, you will see an error message; choose the Save option it gives you, then save the file to a folder on your hard drive from that window.  If you do not have this viewing program installed, a small window should open. One of the options presented should be to save the file. Click on that option. You should then be prompted to specify where on your hard drive you want to save the file. Put it in the folder where you save and open Excel spreadsheets. Once the file has completed downloading, the small window will close on its own.


  1. Tell your students that you want them to imagine that they represent the entire human population of the world. 
  2. Lead a discussion where they attempt to reach a consensus on how many of them would be African, Asian, European, North American, South American and Oceanian.
  3. Once they've arrived at a set of numbers, have them divide into groups of the appropriate size.  Have each group stand or sit in a distinct area of your classroom, and prepare a sign identifying itself (Africa, Asia, Europe, North America, South America and Oceania).  Have them note down the numbers in each group. 
  4. Next, have your students take out sheets of paper and note down the following percentages.  They are from the World Almanac and Book of Facts 2000 (page 878), and are each area's percentage of the estimated world population in 1999.  Should you want to update the numbers, the Population Reference Bureau publishes an annual World Population Data Sheet where you can find the latest estimates.  When you plug the numbers you'll find there into the Population - updated tab in the Microsoft Excel workbook I've created to use in conjunction with this page, you'll see immediate updates for the percentages in this section. To save the workbook file, right click on its link above then choose Save Target As and specify the location to which you want it saved.
  1. Africa - 13%
  2. Asia - 60.7%
  3. Europe - 12.1%
  4. North America - 7.9%
  5. South America - 5.7%
  6. Oceania - 0.5%
  1. Based on these percentages, have each group calculate the correct number it should contain.  To get that number, students will need to multiply the total number of students in the class by the percentage for their group.  For example, the African group in a class of 35 would multiply 35 by .13, and should get 4.55.  As individuals cannot be divided, round off to find that the Africa group in this situation should contain 5 people.
  2. Once you've checked the calculations for each group, have the students rearrange themselves so that each group contains the proper number of students.  In our example for a class of 35, there would be 
  1. 5 Africans (4.55 rounded up)
  2. 21 Asians (21.245 rounded down)
  3. 4 Europeans (4.235 rounded down)
  4. 3 North Americans (2.765 rounded up)
  5. 2 South Americans (1.995 rounded up)
  6. 0 Oceanians (0.175 rounded down)
  1. Comparing the final results with what students first estimated, have your class discuss
  1. where their initial estimates were off, and what might have caused them to be so.
  2. what nations make up each group.
  3. whether an average person would know this sort of information based solely on exposure to mass media (TV, movies, radio, newspapers, magazines, etc.).
  1. If your students are up to it, have them research the percentage of the earth's land taken by each continent.  (For purposes of this activity, you can consider the region of Oceania a continent.)  Calculate the number of square feet in your classroom, then divide it into "plots" representative of the area of each continent.  Label each, then have the number of students representing the population of these continental areas "squeeze in".  How does the rest of the "world" look from each area?

Here is a link to the relevant table in the Information Please Almanac Online.  If you compare the information in this table (at least at the time I write this) with that in the World Almanac table below, you'll notice some relatively minor differences.  They probably stem from the fact that the two tables are based on different sources.  The World Almanac table is based on U.S. Census Bureau data, while the Information Please Almanac data comes from the National Geographic Society.  This is another example illustrating the reasons we need to learn processes rather than memorize answers

The World Almanac and Book of Facts 2000 shows the following in a table on page 878.

Continent or Region Area (millions of square miles) % of the Earth World population % (1999)
North America 9.4 16.2% 7.9%
South America 6.9 11.9% 5.7%
Europe 3.8 6.6% 12.1%
Asia 17.4 30.1% 60.7%
Africa 11.7 20.2% 13.0%
Oceania 3.3 5.7% 0.5%
Antarctica 5.4 9.3% 0%
  1. The Population Reference Bureau developed an interesting section of its old site for educators.  One of the lesson plans featured there is titled Food for Thought.  Teachers looking for ways to extend the activity described above should find it of interest.
  2. If these statistics are not dynamic enough for you, don't miss Hans Rosling's 2006 TED conference presentation, available for viewing via YouTube. Rosling is a  Professor at Sweden's Karolinska Institute. If you like his talk, you'll love the materials you'll find at his web site,
  3. has created an absolutely fascinating page - a World Statistics Clock. There you can watch key measures of environmental and personal health spin before your eyes.

If this works well, try it again with a different topic.

Languages Religions Income Age distribution Fact checking top of this page

Begin by asking your students to write down what they believe are the 10 most common languages spoken in the world (#1 being the most common, #2 the next most common, etc.).  (If 10 is too many for your class, ask them for the most common 5, or even the most common alone.)  Then ask them to decide what percentage of the world's population speak each, and how many students in the class would represent that percentage.  Go on to lead a discussion where you attempt to reach a class consensus on what should be on the list, the percentage of the world population speaking each, and the number of students in the class representing those percentages.  Once you've reached a consensus, or given up trying for one, share the information in the following table with your class.  It is based on data published by Ethnologue. (Thanks to Pam Echerd for help in properly using Ethnologue's data.)

The number of speakers shown for each language includes those for whom it is a Mother Tongue, as well as those who speak it as a second language. As the data is for 1999, I calculated the % of world population using 6,002,509,427, the estimated mid-year 1999 world population.  The remainder of the world's population (14 students in a class of 35) speak more than 6,000 other languages.

Clicking on a language link will open a separate browser window with Ethnologue's most recent data for that language.  Clicking on a country link will open a separate browser window with Ethnologue's most recent data about the languages spoken in that nation.  If you want to update the table as newer data becomes available, you'll also need the most recent world population figures.

Ethnologue also presents a chart showing the geographic distribution of living world languages.

Language Home nation Est. speakers (millions) % of world pop (1999) # in a class of 35
Mandarin China 1,052 17.53% 6
English United Kingdom 508 8.46% 3
Hindi India 487 8.11% 3
Spanish Spain 417 6.95% 2
Russian Russia 277 4.61% 2
Bengali Bangladesh 211 3.52% 1
Portuguese Portugal 191 3.18% 1
Indonesian Indonesia (Java and Bali) 140 2.33% 1
German Germany 128 2.13% 1
French France 128 2.13% 1

The list looks somewhat different when only those for whom a language is their Mother Tongue are counted.  With this list, 18 students in a class of 35 would be left speaking humanity's more than 6,000 other languages.

Language Home nation Est. speakers (millions) % of world pop (1999) # in a class of 35
Mandarin China 874 14.56% 5
Hindi India 366 6.10% 2
Spanish Spain 358 5.96% 2
English United Kingdom 341 5.68% 2
Bengali Bangladesh 207 3.45% 1
Portuguese Portugal 176 2.93% 1
Russian Russia 167 2.78% 1
Japanese Japan 125 2.08% 1
German Germany 100 1.67% 1
Korean Korea, South 78 1.30% 1

choose another topic

Begin by asking your students to generate a list of the top 10 religious denominations in the world.  Then ask them to decide what percentage of the world's population belong to each, and how many students from the class would represent the world's population for each.  The Information Please Almanac Online has a table showing the distribution of the Top Ten.

The following list is from the World Almanac and Book of Facts 2000 (page 695).  It is based on the 1998 world population (5,924,574,901).  The 1 remaining person in a class of 35 would be spread among the religions with 0 representation.  Should you want to update the numbers, look at the statistics published by  When you plug the numbers you'll find there (along with the population total for the year those numbers represent) into the Religion - updated tab in the Microsoft Excel workbook I've created to use in conjunction with this page, you'll see immediate updates for the data in this section. To save the workbook file, right click on its link above then choose Save Target As and specify the location to which you want it saved.


Adherents (millions)

% of world pop (1998) # in a class of 35
Baha'is 6.764 0.11% 0
Buddhists 353.794 5.97% 2
Chinese Folk Religionists 379.162 6.40% 2
Christians 1,943.038 32.80% 11
Confucianists 6.241 0.11% 0
Ethnic religionists 248.565 4.20% 1
Hindus 761.689 12.86% 5
Jains 3.922 0.06% 0
Jews 14.111 0.24% 0
Mandeans .038 less than 0.01% 0
Muslims 1,164.622 19.66% 7
New-Religionists 100.144 1.69% 1
Shintoists 2.789 0.05% 0
Sikhs 22.332 0.38% 0
Spirtualists 11.785 0.20% 0
Zoroastrians .274 less than 0.01% 0
Other religionists 1.001 0.02% 0
Nonreligious 759.655 12.82% 4
Atheists 149.913 2.53% 1

choose another topic

Begin by asking your class to figure out how many students would represent the percentage of those in the world living on an income of less than $2 per day.  The World Bank tracks the numbers.  Their tables provide percentages of population in the less developed world, so you'll have to use their numbers to calculate the percentages of the entire world population.

The 1998 World Bank data shows, conservatively, that 1.1749 billion people lived on less than $1 per day; while 2.8115 billion lived on less than $2 per day (this of course includes those living on less than $1 per day).  The world had roughly 5.925 billion people in 1998.  This means that 19.83% lived on less than a dollar a day; while 47.45% (almost half of the world population) lived on less than $2 a day.  In a class of 35, that would be 7 and 17 respectively.

For comparison purposes, the Statistical Abstract of the United States 1999 gives the median per capita income for the U.S. in 1998 as $75 per day; and its population as 270,561,000.  This means that, on average, residents of the U.S. (4.57% of the world's population or 2 in a class of 35) earned more than 37 times that earned by nearly half of the world's other residents.

choose another topic

Begin by asking your class to determine how many of them would represent the world population under 15 years old, from 15 through 59 years old, and 60 years old and older.  The United Nations Development Programme tracks information such as this.  Recent reports are available at

Their data for 1998 showed the following:

Age range % of world pop (1998) # in a class of 35
through 14 years old 30% 11
15-59 years old 60% 21
60+ years old 10% 3

choose another topic

In 2001, I received an e-mail in which the sender forwarded me the bolded message below.  Doing a cursory web search, I determined that it appears to have been circulating on the web for some time.  I've seen things like it in print for a couple of decades.  In fact, it was one of them that prompted me to research, write and post this page.  A famous one was prepared by Donnella Meadows as the back side of a poster commemorating the Rio Earth Summit in 1992.  (Meadows co-authored the books The Limits to Growth and Beyond the Limits.) A very nice Flash presentation based on Meadows' numbers is now online at Thanks to Barbara Kingsley (@barbarakingsley on Twitter) for pointing it out.

The problem with messages like these is that sources for the numbers are not usually cited.  Thus it is very difficult to try to validate or update them.  Sounds to me like a good class project for students who know how to search the web.  My attempt resulted in what you see above.  Maybe your students can find sources to update some of the other numbers.

Addendum, May 4, 2002 - I've come across a treasure trove of links concerning the e-mail message below.

  1. with regard to its authorship, see the following
  1. with regard to the validity of its assertions, do not miss
  1. For a visual depiction, see the Miniature Earth project at

If you want more fact checking ideas, be sure to review Is That A Fact?.

Here is the e-mail I received:

If Earth's population was shrunk into a village of just 100 people -- with all the human ratios existing in the world still remaining -- what would this tiny, diverse village look like?

57 would be Asian
21 would be European
14 would be from the Western Hemisphere
8 would be African

52 would be female
48 would be male

70 would be nonwhite
30 would be white

70 would be non-Christian
30 would be Christian

89 would be heterosexual
11 would be homosexual

6 would possess 59% of the entire world's wealth, and all 6 would be from the United States.
80 would live in substandard housing
70 would be unable to read
50 would suffer from malnutrition

1 would be near death
1 would be pregnant
1 would have a college education
1 would own a computer

The following is an anonymous interpretation:

Think of it this way. If you live in a good home, have plenty to eat and can read, you are a member of a very select group.

And if you have a good house, food, can read and have a computer, you are among the very elite.

If you woke up this morning with more health than illness ... you are more fortunate than the million who will not survive this week.

If you have never experienced the danger of battle, the loneliness of imprisonment, the agony of torture, or the pangs of starvation ... you are ahead of 500 million people in the world.

If you can attend a church meeting without fear of harassment, arrest, torture, or are fortunate, more than three billion people in the world can't.

If you have food in the refrigerator, clothes on your back, a roof overhead and a place to are richer than 75% of this world.

If you have money in the bank, in your wallet, and spare change in a dish are among the top 8% of the world's wealthy.

If your parents are still alive and still are very rare, even in the United States.

If you hold up your head with a smile on your face and are truly thankful ... you are blessed because the majority can, but most do not.

If you can hold someone's hand, hug them or even touch them on shoulder ... you are blessed because you can offer a healing touch.

If you can read this message, you just received a double blessing in that someone was thinking of you, and furthermore, you are more blessed than over two billion people in the world that cannot read at all.

Have a good day, count your blessings, Peace.

Be Happy & Don't Worry :-) :-) :-)

choose another topic

Here are other lesson ideas that allow students to work with numbers.
  1. Interesting numbers
  2. Putting Time in Perspective
  3. Taxes Made EZ
  4. those containing data tables with which you might want your students to work

Warm-up activities

Which is largest, Greenland, South America or Africa?

School Safety Facts

What is the most common crime committed in the U.S.?

When a person dies at the hands of a gunman, who most often pulls the trigger?

How much is an education worth?

Main Events

Media use survey from Propaganda in the classroom

Double, Double, Toil and Trouble

How much do they make?

return to the Main Events page

return to the Lesson Ideas page

copyright 2000-2013 All Rights Reserved.
original web posting: Tuesday, December 12, 2000
last modified: Thursday, September 12, 2013