Topical Science—April 2021


Welcome to another month of fun science! Whether you’re teaching from home or in the classroom, these videos will help you make science class more topical and fun. Let’s jump right in.

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Sunday, April 4

Geologists Day

This day was established in 1966 and celebrates the work of geologists. Geologists are scientists who study the natural processes that shape our world—for example, rock formations and how these are created. One of the world’s most famous land formations is the Grand Canyon. Discover how the Grand Canyon was created in this video:

Monday, April 5

National Wildlife Week

Celebrated since 1938, National Wildlife Week is an annual education program that connects and educates conservationists of all ages. The aim of the movement is to teach people how we can protect wildlife and wildlife habitats. One simple thing you can do to help is cleaning up outdoor spaces—for example, doing a beach cleanup. Learn more.

Wednesday, April 7

World Health Day

World Health Day is a global awareness day sponsored by the World Health Organization. Each year, the day focuses on a specific health topic, with the aim to improve the health of people all around the world. One important aspect of health is what you eat. Learn more about what constitutes a balanced diet in this video: Watch now.

International Beaver Day

In North America, the beaver population has drastically diminished over the last centuries. As a result, a lot of wetlands have disappeared, causing problems such as water pollution and flooding. By protecting beavers and letting them build their dams, those problems could be avoided, which is the aim of this day. Learn more about how beavers build dams: Watch now.

Monday, April 12

International Day of Human Space Flight

On April 12, 1961, Yuri Gagarin became the first human to travel into outer space. In 2011, on the 50th anniversary of Gagarin’s journey, the UN proclaimed April 12 the International Day of Human Space Flight. The day celebrates all the humans who have ever traveled into space and the important research they have done. On this day, why not find out more about astronauts’ lives in space? For example, how do they exercise?  Watch now.

Wednesday, April 14

National Dolphin Day

This day aims to educate people about dolphins, their habitats, and their importance to the health of the ocean. It also encourages people to find out what they can do to protect dolphins. Dolphins are amazing creatures who have a very special way of communicating with each other—echolocation! Learn more.

Thursday, April 22

International Mother Earth Day

Established by the UN in 2009, this day promotes “a view of the Earth as the entity that sustains all living things found in nature.” In other words, it encourages us to learn about how everything on the Earth, including us humans, relies on the health of the planet and its biodiversity. But what is biodiversity? 

Saturday, April 24

World Immunization Week

This World Health Organization event promotes the importance of vaccines to protect people around the world from diseases. Every year, millions of lives are saved because of immunization, and many diseases, such as polio, have been almost completely eradicated thanks to vaccines.

Sunday, April 25

National DNA Day

On this day in 1953, Rosalind Franklin, James Watson, Francis Crick, and Maurice Wilkins published their groundbreaking papers on the double-helix structure of DNA. To celebrate, this day encourages people to learn more about DNA. You can find out more in this video: 

Monday, April 26

Richter Scale Day

This day celebrates the birth of Charles F. Richter, an American seismologist who invented the Richter scale. Today, the Richter scale is used worldwide to measure the strength of earthquakes. But how does the scale work? Find out more:  

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Topical Science—March 2021


Happy March! Are you ready for another month of topical science content? Below, we’ve collated free science videos and articles to complement the holidays and observance days in March. Hopefully, this content will be welcome inspiration for the last few weeks of school before spring break.

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Wednesday, March 3

World Wildlife Day

This global annual event was created by the UN in 1973 and celebrates the world’s wildlife, with the goal of protecting wild animal and plant species from threats such as habitat loss and illegal hunting. One way of protecting wildlife is through conservation work. For example, in Namibia, an ecotourism venture protects the country’s black rhinos—one of the world’s rarest creatures. Find out more.

Monday, March 8

International Women’s Day

Celebrated for over 100 years in countries all over the world, this day became an official UN day in 1975. For decades, women have used this day to fight for their rights. On this day, why not learn more about one of history’s most celebrated female scientists, Marie Curie? Find out more.

Sunday, March 14

International Day of Mathematics

This day, also known as Pi Day (since the first three digits of π are 3.14) has been celebrated since 1988. In 2019, UNESCO recognized it as the International Day of Mathematics. Math isn’t just for the classroom—it’s present everywhere in nature! For example, the periodical cicada seems to make use of prime numbers to survive. Find out more: 

Thursday, March 18

World Sleep Day

World Sleep Day is an annual event organized by the World Sleep Society that has been celebrated since 2008. The goal of the event is to highlight the importance of a good night’s sleep and to bring attention to the health problems that bad sleep can lead to. But how does the body know that we sleep at night? Watch this video to find out what makes us sleepy: Watch now.

Sunday, March 21

International Day of Forests

This day was established by the UN in 2012 with the aim of raising awareness of how important forests are to the health of the planet—and, by extension, the health of us humans. The day raises awareness of the problems of deforestation and encourages projects that protect forests, such as tree-planting campaigns. But what is deforestation, and why is it so bad?

Monday, March 22

World Water Day

World Water Day is a UN observance day that highlights the importance of freshwater. Access to clean freshwater is crucial to people’s survival and health, but around the world, many people struggle to access it. So where does freshwater come from? Let’s learn more about the water cycle:

Tuesday, March 23

World Meteorological Day

On March 23, 1950, the World Meteorological Organization was established, and since then this day has been celebrated in all countries that are members of the organization. The day celebrates the contribution of meteorological services to society—for example giving early warnings of severe weather, such as strong winds and storms. On this day, why not learn more about why wind travels the way it does? 

Saturday, March 27

Earth Hour

Earth Hour is a worldwide movement organized by the World Wide Fund for Nature (WWF). For one hour, between 8.30 and 9.30 pm, people are encouraged to turn off all unnecessary electricity. This symbolic action aims to raise awareness of the impact that our electricity usage has on climate change. Learn more about global warming by watching this video:

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Ciencia de actualidad—Febrero 2021

¡Feliz Febrero! Bien hecho por conseguir pasar a través del primer mes de 2021. Estamos inquietos esperando a que los días vayan haciéndose más claros y cálidos (para todos los que estamos en el hemisferio norte). Por supuesto, también estamos esperando a profundizar en más contenido científico fascinante este mes. 

¡Vamos a comenzar con nuestra selección mensual de ciencia de actualidad!

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Febrero 2021

Lunes, 1 de Febrero

Día Nacional de Texas

El primer día del mes celebra Texas, también conocido como el estado de la Estrella Solitaria. Texas es famoso por su producción de petróleo. Sus abundantes reservas de petróleo llevó a Texas a una era del petróleo a comienzos del siglo XX. Sin embargo, a día de hoy, los los suministros de petróleo están aminorando. Aprende más sobre las dificultades y los impactos medioambientales de la extracción de petróleo en el video “Frontier Oil Exploration”. Click aquí

Domingo, 7 de Febrero

Día Nacional de la tabla periódica

En este día se celebra la publicación de la primera tabla periódica moderna, creada por Dmitri Mendeleev en el siglo XIX. Desde entonces, se han descubierto y agregado muchos más elementos a la tabla. Obtenga más información en este video. Click aquí.

Lunes, 8 de Febrero

Día del nacimiento de la tv en color

En este día se transmiten las primeras transmisiones a color desde México en 1963 gracias al joven Guillermo González Camarena que creó un “adaptador cromático para equipos televisivos”, un sistema temprano de transmisión de televisión a color. En octubre de 1962 patentó el sistema bicolor simplificado, sistema que se usa hasta nuestros días en las televisiones a color. La NASA lo adoptó en las transmisiones científicas de televisión, particularmente en señales en vuelos espaciales debido a que la representación de los colores era más fiable. ¿Quieres saber más acerca del color y cómo lo percibimos? Ver más.

Miércoles, 10 de Febrero

Día Mundial de las Legumbres

Este día fue establecido por la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO) y tiene como objetivo celebrar las legumbres de todo tipo: garbanzos, frijoles, lentejas, guisantes y más. Las legumbres no sólo son ecológicas, también son una parte importante de una dieta saludable. Obtén más información sobre lo que constituye una dieta equilibrada en este video: Click aquí.

Jueves, 11 de febrero

Día Internacional de la Niña y la Mujer en la Ciencia
Two happy elementary school girls performing science experiment in lab

Implementado por la UNESCO y ONU-Mujeres, este día celebra a las mujeres y niñas en la ciencia, y promueve formas de brindarles igualdad de acceso a la ciencia – ambos en el colegio y en sus carreras. Pocas niñas eligen estudiar STEM en la universidad y, como resultado, las mujeres son subrepresentadas en las carreras STEM. Pero, cómo se puede inspirar a las niñas a amar la ciencia? Lee más en el post de nuestro blog.

Sábado, 13 de febrero

Día mundial de la radio

La Conferencia General de la UNESCO proclamó el Día Mundial de la Radio el día en el que nació la ONU, la organización de Naciones Unidas. Este organismo internacional fue creado en 1946 recién terminada la segunda guerra mundial. La invención de la radio es normalmente asignada a Nicola Tesla o Guglielmo Marconi. Las ondas de radio se usan actualmente para la televisión y las emisiones de radio FM y AM, comunicaciones militares y otros numerosos tipos de comunicaciones. Aprende más: Ver más.

Domingo, 14 de febrero

Día de San Valentín
Several heart-shaped red balloons against pink background

Hoy, el día de San Valentín se celebra en todo el mundo, pero empezó cómo una fiesta cristiana para conmemorar a San Valentín en Roma. En los siglos XIV y XV se vinculó con el amor romántico, y en la Inglaterra del siglo XVIII la gente comenzó a regalar flores, tarjetas o dulces a sus seres queridos. Aquí hay algunos datos divertidos con temas científicos sobre este día: Lee ahora.

Día Mundial de la Ballena
Blue whale in the sea

Este día celebra todo tipo de ballenas, desde las gigantes ballenas azules, hasta las ballenas beluga, mucho más pequeñas (¡pero aún así bastante grandes!). Las ballenas azules son, de hecho, los mamíferos más grandes del planeta y pueden llegar a pesar hasta 160 toneladas. Pero, ¿por qué son tan grandes? Obtén más información en este artículo: Lee más.

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Street sign of "Dr Martin Luther King Jr Blvd" against blue sky

Topical Science—February 2021


Happy February! Well done for getting through the first month of 2021. We’re looking forward to the days slowly getting lighter and warmer (for everyone in the northern hemisphere). Of course, we’re also looking forward to diving into more fascinating science content this month. Let’s start with our monthly selection of topical science!

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Whole month

Black History/African-American History Month
Street sign of "Dr Martin Luther King Jr Blvd" against blue sky

This event commemorates the historical achievements, contributions, and trials of African-Americans—moments of history that have often been excluded from history books. This month, why not find new ways to engage all your students in STEM, regardless of background? Watch our webinar “Race and Bias: How to Engage All STEM Learners” to get started: Watch now.

Monday, February 1

National Texas Day

The first day of the month celebrates Texas, also known as the Lone Star State. Texas is well known for its oil production. Its abundant oil reserves led to the Texas oil boom in the early 20th century, but today oil supplies are dwindling. Learn more about the difficulties and environmental impacts of oil drilling in the video “Frontier Oil Exploration”:

Sunday, February 7

National Periodic Table Day

This day celebrates the publication of the first modern periodic table, created by Dmitri Mendeleev in the 19th century. Since then, many more elements have been discovered and added to the table. Learn more in this video:

Wednesday, February 10

World Pulses Day

This day was established by the Food and Agriculture Organization (FAO) and aims to celebrate pulses of all kinds—chickpeas, beans, lentils, peas, and more! Pulses aren’t just eco-friendly—they’re also an important part of a healthy diet. Learn more about what makes up a balanced diet in this video:

Thursday, February 11

International Day of Women and Girls in Science
Two happy elementary school girls performing science experiment in lab

Implemented by UNESCO and UN Women, this day celebrates women and girls in science and promotes ways to give them equal access to science—both in school and in their careers. Few girls choose to study STEM at college or university and, as a result, women are underrepresented in STEM careers. But how can you inspire girls to love science? Read our blog post.

National Inventors’ Day
Box of dynamite

This day celebrates inventors all over the word. Past inventors have used their imagination and intelligence to create all kinds of things—including many things that we now take for granted. One of history’s most famous inventors is Alfred Nobel, who invented dynamite. Learn more:

Sunday, February 14

Valentine’s Day
Several heart-shaped red balloons against pink background

Today, Valentine’s Day is celebrated across the world, but it started as a Christian feast day to commemorate Saint Valentine of Rome. In the 14th and 15th centuries it became linked to romantic love, and in 18th century England people started giving flowers, cards, or confectionery to their loved ones. Here are some fun, science-themed facts about the holiday: Read now.

Saturday, February 20

National Love Your Pet Day
Child hugging old, black dog

This unofficial holiday celebrates the love that we have for our pets—whether they’re dogs, cats, birds, or something else entirely! Most of us have a favorite pet, but what is the most popular pet in America? Watch this video to find out:

World Whale Day
Blue whale in the sea

This day celebrates all kinds of whales—from the giant blue whales to the much smaller (but still quite large!) beluga whales. Blue whales are in fact the largest mammals on the planet, and they can weigh up to 160 metric tons! But why are they so large? Find out more in this article: Read more.

Monday, February 22

National California Day
Group of wolves in Yellowstone National Park

Today we celebrate the golden state, California. The most populous state in the US is well-known for its impressive wilderness—such as Yellowstone National Park. On this day, why not learn more about what happened when wolves were released into the park in 1995… Watch now.

Saturday, February 27

International Polar Bear Day
Polar bear on sea ice, looking at the camera

This day raises awareness of the challenges that polar bears face because of global warming. With the increased sea ice loss in the Arctic, the natural habitat of polar bears is quickly changing—and many are struggling to cope. Find out how polar bears have evolved to survive the biting cold of the Arctic in this video: Watch now.

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Ciencia de actualidad—Enero 2021

¡Feliz año nuevo! Estamos emocionados de comenzar un nuevo año y esperamos impacientes por todo lo que está por venir. Como siempre, nuestro objetivo es compartir la educación científica de calidad con tantos estudiantes de todo el mundo como sea posible. Como parte de esto, continuaremos compartiendo contenido científico de actualidad cada mes. ¡Echemos un vistazo a lo que viene en enero!

Viernes, 1 de Enero

Mes nacional de la donación de sangre

El Mes Nacional del Donante de Sangre se celebra desde 1970, con el objetivo de concienciar sobre la importancia de la donación de sangre. La transfusión de sangre puede salvar vidas, pero durante la guerra de Vietnam, los médicos aprendieron que, a veces, el cuerpo necesita tiempo para curarse a sí mismo primero …

Lunes, 4 de Enero

World Braille Day

Este día celebra el braille, un sistema de escritura que permite a las personas con discapacidad visual leer tocando una serie de puntos en relieve. En Twig, creemos en hacer que la ciencia sea accesible, por lo que hemos creado 145 conjuntos de archivos NIMAS, lo que permite crear versiones en braille y en letra grande de nuestros libros y lectores Twig K-6.

Descubre más.

Martes, 5 de Enero

Día Nacional del Ave

Este evento anual celebra la observación y estudio de las aves, al mismo tiempo que apoya los programas de conservación del hábitat de aves silvestres y las organizaciones de rescate de las mismas. En este día, ¿por qué no averiguar más sobre el pájaro cascanueces y el importante papel que tiene en el mantenimiento de la biodiversidad del Parque Nacional de Yellowstone?

Aprende más.

Jueves, 7 de Enero

Día de las Rocas Antiguas

En este día, los geólogos y entusiastas de las rocas celebran el estudio de fósiles, minerales y rocas. ¿Por qué no unirse a su celebración y aprender más sobre los diferentes tipos de rocas?

Descubre más.

Sábado, 9 de Enero

Día de la electricidad estática

El Día de la Electricidad Estática nos anima a aprender más sobre este extraño tipo de electricidad. Probablemente todos lo hemos experimentado, pero ¿qué es exactamente? Lo vamos a averiguar:

Martes, 19 de Enero

Día Nacional de las palomitas

Este día celebra uno de los bocadillos más populares del mundo. Pero, ¿por qué revientan las palomitas de maíz?

Descubre más:

Miércoles, 20 de Enero

Día de la concienciación sobre el pingüino

¿Sabías que hay hasta 20 especies de pingüino? No todos viven en lugares fríos como la Antártida; de hecho, ¡se pueden encontrar en muchos de los continentes del mundo! En este día, ¿por qué no aprender más sobre el pingüino con cresta de Fiordland?

Aprende más.

Sábado, 24 de Enero

Día Internacional de la Educación

Este Día de Observación de las Naciones Unidas celebra la importancia de la educación para la paz y el desarrollo, y reconoce la educación como un derecho humano. Este es un sentimiento que compartimos en Twig Education, razón por la cual nuestro objetivo es brindar educación científica de calidad a estudiantes de todo el mundo.

Sepa más sobre nuestros productos.

Topical Science—January 2021


Happy New Year! We are excited to start a new year and we look forward to all that is to come. As always, our goal is to share quality science education with as many students from around the world as possible. As part of this, we will continue to share current scientific content each month. Let’s take a look at what’s coming in January!

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Friday, January 1

National Blood Donor Month

National Blood Donor Month has been celebrated since the 1970s, with the aim to raise awareness of the importance of blood donation. Blood transfusion can save lives, but during the Vietnam War, doctors learned that sometimes, the body needs time to heal itself first…

Monday, January 4

World Braille Day

This day celebrates braille—a writing system that allows visually impaired people to read by touching a series of raised dots. At Twig, we believe in making science accessible, so we have created 145 sets of NIMAS files, enabling braille and large print versions of our K-6 Twig Books and Readers to be made. Find out more.

Tuesday, January 5

National Bird Day

This annual event celebrates birdwatching and the study of birds—while also supporting wild bird habitat conservation programs and bird rescue organizations. On this day, why not find out more about the nutcracker and the important role it has in maintaining the biodiversity of Yellowstone National Park? Learn more.

Thursday, January 7

Old Rock Day

On this day, geologists and rock enthusiasts celebrate the study of fossils, minerals, and rocks. Why not join their celebration and learn more about different types of rocks? Learn more.

Saturday, January 9

Static Electricity Day

Static Electricity Day encourages us to learn more about this strange type of electricity. We’ve probably all experienced it, but what exactly is it? Let’s find out:

Tuesday, January 19

National Popcorn Day

This day celebrates one of the world’s most popular snacks. But why does popcorn pop? Find out more.

Wednesday, January 20

Penguin Awareness Day

Did you know that there are as many as 20 species of penguin? They don’t all live in the cold places like Antarctica—in fact, they can be found on many of the world’s continents! On this day, why not learn more about the Fiordland crested penguin? Learn more.

Sunday, January 24

International Day of Education

This UN Observance Day celebrates the importance of education for peace and development, and recognizes education as a human right. This is a sentiment we share at Twig Education, which is why our goal is to provide quality science education to students across the globe. Learn more about our products.

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