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It is important to have a large variety of sources in your teaching, like images, worksheets, Power Points, games etc. I especially like the use of videos in the classroom I find that they can be a very effective resource.

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Trust and Mistrust when Students Read Multiple Information Sources about Climate Change

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Trust and Mistrust when Students Read Multiple Information Sources about Climate Change

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Now more then ever it is vitally important that students are equipped with the correct skills to be able to identify credible sources of information, not only in science but in their other subjects and especially in their everyday lives. As discussed in one of our tutorials it crucial that sources relating to such controversial topics like climate change can be credible and that students are able to identify bias that may be present. When in the classroom one student remarked that "if something is reported on Facebook that means it's true". I tried to include questioning in my planning trying to get to students to ask, why? This type of critical analysis of information is skill that should be encouraged in the students especially when dealing with topics like climate change.

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Investigation: Preparing a specimen of onion cell to view under a microscope

Investigation: Refracting ability

Investigation: Testing rocks for carbon

Investigation: Model rocket

Fig. 3.2.1 - Photosynthesis

Fig. 7.4.3 - Wind pollination

Fig. 7.4.4 - Insect pollination

Fig. 8.3.4 - Blood flow through the heart

Fig. 8.4.4 Inhalation and exhalation

Fig. 11.2.1 - How sugar dissolves in water

Fig. 13.2.1 - The pH scale

Fig. 14.3.3 - An ionic bond between sodium and chlorine to form sodium chloride

Fig. 14.3.6 - How electrons are shared by hydrogen and oxygen atoms to form water

Fig.15.3.6 - Measuring the volume of an irregular object using a graduated cylinder

Fig. 15.4.2 - A spring balance with zero error

Fig. 16.5.1 - The set-up for an energy conversion device

Fig. 17.5.2 - 3D molecular structure being compressed

Fig. 19.5.1 - A heated spoon conducts heat through fast-vibrating particles

Fig. 19.5.3 - Convection currents in a liquid

Fig. 23.1.7 - The angles the sun's rays hit Ireland at in mid-winter and mid-summer (p. 403)

Fig. 23.1.8 - The Sun's rays on the Earth

Fig. 23.2.3 - The phases of the Moon

Fig. 23.2.4 - How a solar eclipse happens

Fig. 23.2.5 - How a lunar eclipse happens

Figure 24.1.2 - A thermal power station heated by coal

Fig. 24.2.2 - Nuclear fission of a uranium isotope converts nuclear energy to heat energy

Fig 24.2.6 - Nuclear fusion

Portfolio ebook (Double click to zoom)

Keywords ebook (Double click to zoom)

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Investigation: Preparing a specimen of onion cell to view under a microscope Investigation: Refracting ability Investigation: Testing rocks for carbon Investigation: Model rocket Fig. 3.2.1 - Photosynthesis Fig. 7.4.3 - Wind pollination Fig. 7.4.4 - Insect pollination Fig. 8.3.4 - Blood flow through the heart Fig. 8.4.4 Inhalation and exhalation Fig.

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How San Francisco Became A Global Leader In Waste Management

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The Effect of the Inquiry-Based Learning Approach on Student's Critical-Thinking Skills

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The Effect of the Inquiry-Based Learning Approach on Student's Critical-Thinking Skills

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This article discusses the relationship between inquiry based learning and critical thinking skills. Critical thinking skills are a really important skill to for your students to develop and for you to foster in your classroom. The research also indicates that "scientific inquiry" should also be coupled with "scientific discussion" as IBL can increase the comprehension level of students. The article also refers to Çetinbaş-Gazeteci research that showed that games had a positive effect on students critical thinking skills and performance. I found the use of games i.e matching games etc. really beneficial and effective in my classes, as motivational, assessment, information and evaluative tools. I tried to incorporate inquiry into my planning where possible and the use of games.

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Climate Change 101 with Bill Nye | National Geographic

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Global Warming 101 | National Geographic

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Human Population Through Time | Ubuntu Network

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This video shows that it took 200,000 years for our human population to reach 1 billion-and only 200 years to reach 7 billion. But growth has begun slowing, as women have fewer babies on average. When will our global population peak? And how can we minimize our impact on Earth's resources, even as we approach 11 billion?

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World Population: Past, Present, and Future

(move and expand the bar at the bottom of the chart to navigate through time)

The chart above illustrates how world population has changed throughout history. View the full tabulated data.

At the dawn of agriculture, about 8000 B.C., the population of the world was approximately 5 million. Over the 8,000-year period up to 1 A.D. it grew to 200 million (some estimate 300 million or even 600, suggesting how imprecise population estimates of early historical periods can be), with a growth rate of under 0.05% per year.

A tremendous change occurred with the industrial revolution: whereas it had taken all of human history until around 1800 for world population to reach one billion, the second billion was achieved in only 130 years (1930), the third billion in 30 years (1960), the fourth billion in 15 years (1974), and the fifth billion in only 13 years (1987).

During the 20th century alone, the population in the world has grown from 1.65 billion to 6 billion.

In 1970, there were roughly half as many people in the world as there are now.

Because of declining growth rates, it will now take over 200 years to double again.

Wonder how big was the world's population when you were born?
Check out this simple wizard or this more elaborated one to find out.

Growth Rate

Population in the world is growing at a rate of around 0.91% per year in 2024 (up from 0.88% in 2023, and down from 0.98% in 2020, and 1.06% in 2019). The current population increase is estimated at around 73 million people per year.

Annual growth rate reached its peak in the late 1960s, when it was at around 2%. The rate of increase has nearly halved since then, and will continue to decline in the coming years.

World population will therefore continue to grow in the 21st century, but at a much slower rate compared to the recent past. World population has doubled (100% increase) in 40 years from 1959 (3 billion) to 1999 (6 billion). It is now estimated that it will increase by 50% in the subsequent 40 years, to reach 9 billion by 2037.

The latest world population projections indicate that world population will reach 10 billion persons in the year 2057 and 10.4 billion in 2100.

World Population (2024 and historical)
View the complete population historical table
World Population Forecast (2025-2050)
View population projections for all years (up to 2100)
World Population Milestones

10 Billion (2058)

The United Nations projects world population will reach 10 billion in the year 2058.

9 Billion (2037)

World population is expected to reach 9 billion in the year 2037.

8.1 Billion (current)

The current world population is 8,109,479,367 as of Thursday, May 16, 2024 according to the most recent United Nations estimates elaborated by Worldometer. The term "World Population" refers to the human population (the total number of humans currently living) of the world.

8 Billion (2022)

World population has reached 8 billion people on November 15, 2022 according to the United Nations. The U.S. Census Bureau International Database (IDB) estimates instead that the world population hit 8 billion on September 26, 2023. In their note, they added: " Emphasis on the word estimates. There are many sources of uncertainty in estimating the global population, and it's unlikely this population milestone was reached on that exact date" [ source]

7 Billion (2010)

According to the latest revision by the United Nations (released in 2022), world population reached 7 Billion in late 2010 (after being previously estimated as occurring on October 31, 2011). The U.S. Census Bureau made a different estimate, for which the 7 billion mark was reached on March 12, 2012.

6 Billion (1998)

According to the latest revision by the United Nations (released in 2022), the 6 billion figure was reached towards the end of 1998 (this was previously estimated as occurring on October 12, 1999, celebrated as the Day of 6 Billion). According to the U.S. Census Bureau instead, the six billion milestone was reached on July 22, 1999, at about 3:49 AM GMT. Yet, according to the U.S. Census Bureau, the date and time of when 6 billion was reached will probably change because the already uncertain estimates are constantly being updated.

Previous Milestones

Summary Table

1 - 1804 ( 1803 years): 0.2 to 1 bil.

1804 - 2022 ( 218 years): from 1 billion to 8 billion

World Population by Region

World Population Density (people/km²)

Population density map of the world showing not only countries but also many subdivisions (regions, states, provinces). See also: World Map

Courtesy of
Junuxx at en.wikipedia [ CC-BY-SA-3.0 or GFDL], via Wikimedia Commons

World Population by Religion

According to a recent study (based on the 2010 world population of 6.9 billion) by The Pew Forum, there are:

2,173,180,000 Christians (31% of world population), of which 50% are Catholic, 37% Protestant, 12% Orthodox, and 1% other.

1,598,510,000 Muslims (23%), of which 87-90% are Sunnis, 10-13% Shia.

1,126,500,000 No Religion affiliation (16%): atheists, agnostics and people who do not identify with any particular religion. One-in-five people (20%) in the United States are religiously unaffiliated.

1,033,080,000 Hindus (15%), the overwhelming majority (94%) of which live in India.

487,540,000 Buddhists (7%), of which half live in China.

405,120,000 Folk Religionists (6%): faiths that are closely associated with a particular group of people, ethnicity or tribe.

58,110,000 Other Religions (1%): Baha'i faith, Taoism, Jainism, Shintoism, Sikhism, Tenrikyo, Wicca, Zoroastrianism and many others.

13,850,000 Jews (0.2%), four-fifths of which live in two countries: United States (41%) and Israel (41%).

World Population by Country

How many people have ever lived on earth?

It was written during the 1970s that 75% of the people who had ever been born were alive at that moment. This was false.

Assuming that we start counting from about 50,000 B.C., the time when modern Homo sapiens appeared on the earth (and not from 700,000 B.C. when the ancestors of Homo sapiens appeared, or several million years ago when hominids were present), taking into account that all population data are a rough estimate, and assuming a constant growth rate applied to each period up to modern times, it has been estimated that a total of approximately 106 billion people have been born since the dawn of the human species, making the population currently alive roughly 6% of all people who have ever lived on planet Earth.

Others have estimated the number of human beings who have ever lived to be anywhere from 45 billion to 125 billion, with most estimates falling into the range of 90 to 110 billion humans.

World Population clock: sources and methodology

The world population counter displayed on Worldometer takes into consideration data from two major sources: the United Nations and the U.S. Census Bureau.

1. The United Nations Population Division of the Department of Economic and Social Affairs every two years calculates, updates, and publishes estimates of total population in its World Population Prospects series. These population estimates and projections provide the standard and consistent set of population figures that are used throughout the United Nations system.

The World Population Prospect: the 2022 Revision provides the most recent data available (released in July of 2022). Estimates and projected world population and country specific populations are given from 1950 through 2100 and are released every two years. Worldometer, as it is common practice, utilizes the medium fertility estimates.

Data underlying the population estimates are national and sub national census data and data on births, deaths, and migrants available from national sources and publications, as well as from questionnaires. For all countries, census and registration data are evaluated and, if necessary, adjusted for incompleteness by the Population Division as part of its preparations of the official United Nations population estimates and projections.

2. The International Programs Center at the U.S. Census Bureau, Population Division also develops estimates and projections based on analysis of available data (based on census, survey, and administrative information) on population, fertility, mortality, and migration for each country or area of the world. According to the U.S. Census Bureau, world population reached 7 billion on March 12, 2012.

For most countries adjustment of the data is necessary to correct for errors, omissions, and inconsistencies in the data. Finally, since most recent data for a single country is often two years old on average, the current world population figure is necessarily a projection of past data based on assumed trends. As new data become available, assumptions and data are reevaluated and past conclusions and current figures may be modified.

For information about how these estimates and projections are made by the U.S. Census Bureau, see the Population Estimates and Projections Methodology.

Why Worldometer's Population Clock is the most accurate

The above world population clock is based on the latest estimates released in July of 2022 by the United Nations. It will show the same number wherever you are in the world and whatever time you set on your PC.

Visitors around the world visiting a PC clock based counter, instead, will see different numbers depending on where they are located. This is the case with other world population clocks - such as the one hosted on a United Nations website, reaching 8 billion in 24 different instances (one per hour) on November 15, 2022, when each local time zone reached 12:10:08. Similarly, in 2011, the clocks on a UN website and on National Geographic - showed 7 billion whenever the visitor's locally set PC clocks reached 4:21:10 AM on October 31, 2011.

Obviously, the UN data is based on estimates and can't be 100% accurate, so in all honesty nobody can possibly say with any degree of certainty on which day world population reached 7 billion (or any other exact number), let alone at what time. But once an estimate is made (based on the best data and analysis available), the world population clock should be showing the same number at any given time anywhere around the world.

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World Population Clock: 8.1 Billion People (LIVE, 2024) - Worldometer

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How many people are there in the world? World population has reached 8 billion on November 15, 2022 according to the United Nations. World population live counter with data sheets, graphs, maps, and census data regarding the current, historical, and future world population figures, estimates, growth rates, densities and demographics

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ES 7. Illustrate how earth processes and human factors influence Earth’s climate, evaluate effects of climate change and initiatives that attempt to address those effects.

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NS 6. Conduct research relevant to a scientific issue, evaluate different sources of information including secondary data, understanding that a source may lack detail or show bias.

ES 6. Research different energy sources; formulate and communicate an informed view of ways that current and future energy needs on Earth can be met.

CW 10. Evaluate how humans contribute to sustainability through the extraction, use, disposal, and recycling of materials.

PW 8. Research and discuss the ethical and sustainability issues that arise from our generation and consumption of electricity.

BW 10. Evaluate how humans can successfully conserve ecological biodiversity and contribute to global food production: appreciate the benefits that people obtain from the ecosystem.

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Explanation of the links to other Learning Outcomes

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Explanation of the links to other Learning Outcomes

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Being creative (BC),
Working with others (WO),
Communicating (C),
Being literate (BL),
Managing information and thinking (MI&T)

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Starting Planning - Contextual Strands assignment

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This article focuses on one teachers experience of using a flipped classroom approach. A flipped classroom is something that I would really like to embrace in my next school placement/ when I am a qualified teacher as I believe it really enhances the learning that can take place in a classroom, leaving more time for practicals, discussions and direct help with the students. I was unable to try this strategy out when on placement as many of my students did not have access to devices/internet. I did however put an emphases on having a video in most of my classes. Like the students mentioned in this article my students reported that they found it beneficial to hear another person explaining something, the visual aid of seeing it, and the ability to watch the video again if there was any confusion. This coupled with the added engagement and motivation that videos have on students I believe makes them a really effective tool to use in teaching.

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Identifying Effective Climate Change Education Strategies: A Systematic Review of the Research.

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Identifying Effective Climate Change Education Strategies: A Systematic Review of the Research.

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This article investigates the different teaching strategies that teachers use when teaching students about climate change. The article acknowledges that climate change can be a difficult subject to teach as it is seen as a very opinionated topic. It is so different from most other topics in the science curriculum like the periodic table or the circulatory system, that are concrete. The article suggests methods like debate, discussion and many more as beneficial teaching strategies. It emphasizes also the importance of making the material relevant to the lives of the students in order for them to engage with the topic and the material effectively. Making links to the nature of science also. These are aspects that I tried to include in my teaching, I placed a real emphasis on discussion in many of my classes.