Ingenious Communication Techniques of the Indigenous American world

A Winter Count document.
Image Source: Wikimedia Commons

If a time machine dropped you into the Americas in 1491, what would you find? A vast, empty continent roamed by small bands of people, fighting to survive? No way!  Both North and South America before the arrival of Columbus played host to very large urban civilizations, powerful militaries, huge agricultural economies, and an impressive diversity of religions, languages and art styles.  Amazing feats of engineering were the norm in this world as people from Tierra Del Fuego to Baffin Bay carved out their lifestyles in wildly different ecological regions.  You might have seen evidence of this ingenuity in things like the Igloo, or the Tipi, but have you ever heard of the Inka Roads, or the floating city of Tenochtitlan?  Whether they were living in a huge empire or a small tribal nation, Native American people had to be creative in the ways they stored, spread, and communicated the information that each group needed to survive.  Let’s examine some Native American communication techniques that go WAY beyond the stereotypical “smoke signals!”

Inka Road
Image Source: Wikimedia Commons

Despite 770,000 square miles of terrain that encompassed the highest, snowy Andes, the Amazon rainforest, Pacific Ocean beaches and several fierce deserts, the massive 12 million strong Inca Empire innovated one of the most rapid and efficient messaging systems in the premodern world! It relied on a specially trained team of expert marathon runners to relay the messages that were vital to the management of the huge empire.  Chaskis were elite endurance athletes trained from childhood to run fast on some of the toughest high-altitude terrain on earth.  Chaskis passed messages anywhere along 25,000 miles of  specially designed Inca Roads. 
They ran several miles at a sprint until they reached the next Chaski station.  There they would pass the message and the next runner would be off like the wind.  Chaskis took their job very seriously and knew that if they were found to pass an incorrect message, they would be thrown off a cliff.  Running their non-stop, high speed relay race, they could pass a message from Ecuador to Chile in one week, an amazingly fast result for the world before electronic communication! 

Learn more about the Chaskis – Inka Teachers Guide
Learn more about the Chaski Runners

A Winter Count document of the Yanktonai. Image Source: Wikimedia Commons

Large-scale empires like the Inca needed to know exactly what was happening in every corner of their massive territory and had the resources to train and support thousands of Chaskis for all their communication needs.  But what about smaller scale societies, especially nomadic ones that moved around a lot?  Sometimes there is a stereotype that small scale groups like the Natives of the North American Plains were in such a struggle for survival that they did not have time for things like technology, history, and philosophy, but this is not true.  The Sioux had a system of recording and communicating their history that suited their needs perfectly: The Winter Count. 

These are four separate Winter Counts from 1833, all recording a meteor shower.
Image Source: Wikimedia Commons

In the Sioux world, years were not counted from Dec.-Jan. but measured from first snowfall to the next year’s first snowfall.  At the end of the year, elders met to decide what was the most important event of the year past; that event would forever name and define the year.  A special member of the group would design a pictograph representing the event and add it to a special hide that showed each year’s pictographs in succession.  Some of these Winter Count hides ran over 100 years and could be constantly renewed by painting on fresh hide when the old one decayed.  The keeper of the Winter Count also served as the group’s historian, using the winter count to tell stories of what happened each year, keeping the group connected to their past and able to learn more about themselves for the future.  The Winter Count hide itself was easily portable and made of simple materials, making it a perfect technological fit for the highly mobile the Plains Natives. 

Get up close to a Winter Count Calendar

Nature’s Density

Image credit: how to smile

What is
Density? Density is how much ‘stuff’ is packed into a particular area.

For
example, if we have 13 balls in a box and we have the same box with 27
identical balls inside it. We say the box with 27 balls has higher density than
the box with 13 balls.

Density
is a fundamental property of matter. Density is defined as mass divided by unit
volume. It is measured in grams per cubic centimeter or kilograms per cubic
meter. The Greek letter rho, is the symbol for density.

Density,
ρ = Mass ÷ Volume

So,
two liquids can take up the same amount of space(volume) but can have
completely different masses. If liquid A has a higher mass, MORE of that liquid
is in that space and therefore is denser. If liquid B has a lower mass, LESS of
that liquid is in that same space and is therefore less dense than liquid A.

Image credit: steve spangler science

All
liquids in your tower have similar volumes but they have different densities.
What does that mean? That means that each liquid has a different amount of mass
in that volume. The liquids with the highest density are at the bottom, and the
ones with the lower density are on top of each other. So, which of the liquids
is most dense? And which is least dense?

Join our HTHT @ Home Science Experiment and make your own Density Tower:
https://sciencemadefun.net/downloads/Density%20Tower_EOTD_May%2013th.pdf

Bang in a Bag

Image credit: little bins for little hands

A chemical reaction is a process in which one or more chemicals
(or things) combine to make something new. The ‘things’ or chemicals that we
started with are called Reactants and the new ‘thing’ that is made are called
Products. It is called a chemical reaction since:

  1. It is accompanied by a rearrangement of the
    atoms in the reactants to form different chemical matter. The product formed is
    a new entity and is chemically different from the starting reactants.
  2. It is usually irreversible: this means that in
    most cases, I cannot get back what I started with.
  3. A chemical reaction is usually accompanied by
    a color change, smell, heat or light or release of a gas.

An example
of chemical reactions is the burning of wood in the presence of oxygen to
produce ash, water vapor and carbon dioxide.

A Chemical reaction or change is different from a physical change.

A physical change usually involves only a change of state: from
solid to liquid, liquid to gas or gas to water. A physical change does not
involve a change in the chemical entity of the reactant. The products will have
different physical properties than the reactants (such as state of matter,
texture, shape), but the chemical structure remains exactly the same as the
reactants. Therefore, a physical change is usually reversible.

Image source: Pixabay.com

An example
of a physical change is the change of states of water. Liquid water freezes to
become ice, and when heated turns to water vapor or steam. But in all three
states, it is still chemically identical: H2O, which is made of two
atoms of Hydrogen and one atom of Oxygen. So, change of states of matter is not
a chemical, but a physical change.

In the Bang
in a Bag chemical reaction you just observed, acidic vinegar (chemically acetic
acid) reacts with basic baking soda (chemically sodium bicarbonate) to form an
entirely new substance called sodium acetate, carbon dioxide (the gas produced)
and water. Once the reaction is complete, you cannot get back the vinegar and
baking soda. The release of carbon dioxide caused the sound and the bubbling
you observed during the chemical reaction.

Join our HTHT @ Home Science Experiment and make your own Bang in a Bag:
https://sciencemadefun.net/downloads/Bang%20in%20a%20Bag_EOTD_May%2012th.pdf

Bag Stab & Polymerization

A plastic bag is made of polymers, long chains of individual molecules called monomers. When a sharp pencil pierces the bag the polymer chains separate without breaking. The chains of molecules then squeeze tightly around the pencil creating a seal that prevents it from leaking.

Polymers
find use in our everyday life, from water bottles and Tupperware to tires for
automobiles. The word polymer
is derived from the Greek root poly-, meaning many, and mer, meaning part or
segment. Many of the same units (or mers) are connected together to form a long
chain or polymer.

Polymers
are of two types: Polymers such as starch, proteins and DNA occur in Nature,
and are called Natural polymers. Synthetic polymers are derived from petroleum
oil and made by scientists and engineers. Examples of synthetic polymers
include nylon and plastic.

Long
repeating chains can be linked together to form a cross-linked polymer, which
may become branched and become a Branched chain polymer. As the degree of cross
linking in the polymer increases, the polymer usually increases in rigidity and
toughness. This is why we see plastics that have different degrees of hardness
from a plastic bag to a hard-plastic baseball bat.

Join our
HTHT @ Home Science Experiment and learn about polymers:

https://sciencemadefun.net/downloads/Bag%20Stab_EOTD_May%2011th.pdf

MEDIEVAL ENGINEERS: THE SCIENCE BEHIND THE CATAPULT

Image source: Pixabay.com

A
catapult is a lever, a stick or beam, propped up by a fulcrum, the pivot point.
The catapult magnifies your force to throw an object. So, you do not need as big
of a force to propel a large object, but the larger the force, the farther it
goes. In ancient times, catapults were used to throw heavy rocks.

Levers
and fulcrums can be used to pick up heavy things like rocks and building
materials. Have you ever used a see-saw? That’s a lever and fulcrum! See if you
can point out which part of your catapult is the lever, and which is the
fulcrum? The craft stick with the spoon is the lever and the stack of other
craft sticks is the fulcrum. The spoon beam pivots around the stack to generate
the force to launch the load. When you press down on the spoon, it pulls up on
the rubber band on the opposite end—this is its potential energy. When the
spoon is released, it pulls back up on the rubber band and the pom pom goes flying!
The potential energy is converted into energy of motion- kinetic energy.
Gravity also does its part as it pulls the object back down to the ground.

Image source: Pixabay.com

Take
it Further:

Try
launching a bouncy ball with your catapult. Compare it with the pom pom. How far
or high did it travel? Did it go as high or far as the catapult?

The
catapult also demonstrates Newton’s 3 Laws of motion:

An object at rest stays at rest until a force is applied, and an object will stay in motion until something creates an imbalance in the motion. (First Law) The acceleration produced when a force is applied depends on the mass of the object. (F = Ma; Second Law) Every action causes an equal and opposite reaction. (Third Law)

The
pom pom will remain at rest until a force acts on it (the release of the spoon
and/or gravity) – First Law

The
bouncy ball will not travel as high or far as the pom pom as the bouncy ball
has more mass than the pom pom and will require a larger force to travel the
same distance and speed as the pom pom – Second Law (Force = Mass X
Acceleration)

When
the spoon is pushed down, the load (pom pom or bouncy ball) travels upward- in
the opposite direction equal to the force applied on it. (Third Law of
Action-Reaction)

A catapult is a simple machine that has been around for ages. Have your kids dig up a little history and research when the first catapults were invented and used! Hint; check out the 17th century!

Join our HTHT @ Home Science Experiment to make your own Catapult: https://sciencemadefun.net/downloads/Catapult_EOTD_May%206th.pdf

Image source: Pixabay.com

Sizzlin’ Science Summer Camps

Many of the schools and organizations who choose to book
summer programs with us, continue to book year after year. This may be a result
of the benefits that teachers and parents see when their students are involved
in summer learning programs.

Studies suggest that students lose roughly a month of
learning during the summer. Though a child can regain much of the knowledge
lost during summer break, it is important to remember that learning loss is
cumulative. Many believe that over time, the summer slide directly contributes
to the achievement gap between students of different socioeconomic backgrounds.

One of the most common reasons for deciding against summer
learning opportunities is a matter of cost or funding. High Touch High Tech
recognizes the importance of making summer programming accessible to every
student, parent, teacher, and schooling district. We will always put the
ability to educate our community first, by providing the same high quality
science experience at every location, accepting grant funding for programs, and
giving every student the opportunity to receive the high-quality STEM education
that they deserve. 

Often the schools that book High Touch High Tech for summer
camps year after year also choose to take advantage of our low priced, high
quality elementary programs and after school enrichment programs. We offer a
range of program types in such a wide variety of grades and academic settings
because we realize how important it is for students to have access to hands-on
STEM education year-round. We believe this creates an environment that is
conducive to prolonged interest in the STEM fields and sets students up for
academic success.

Summer Learning Loss

Summer is fast approaching, and our eye is on the important
topics. What is the true cost of all the time spent away from the classroom?
How can we continue to stimulate and inspire bright young minds, in a way that
feels fun and exciting to both kids and parents?

Research shows that students that stay actively involved in programs that involve physical and mental health exercises have tended to score higher on standardized tests than those who are not engaged in such activities during the summer break. More than that, studies have revealed that keeping students in such beneficial programs may ultimately affect the likelihood of those students to advance beyond the socioeconomic classes that they were born into.

High Touch High Tech aims to make itself available to any
community, organization, or school where there is a need or desire for
educational enrichment. We believe that we can be an asset to students learning
how to interact with scientific concepts, and that learning can be fun.

Not only is it crucial to keep young minds engaged and
learning during time spent away from the classroom, but early involvement in
STEM based education is a monumental factor when considering which students
will go on to get degrees in STEM related fields. Research finds that students
who are interested in STEM fields early on in their education, by 8th
grade, are more likely to graduate with a degree in a related field than those
who performed highly on tests in STEM fields.

High Touch High Tech puts an emphasis on fun, hands-on
methods of learning.  We strive to
deliver exciting programs year-round, helping guide a student’s engagement with
scientific concepts by way of auditory, visual, and kinesthetic learning
methods. This allows us to the opportunity to reach the child where they are at,
through which ever learning style is most suitable to their naturally preferred
learning method.

25 Years of Prioritizing Education

The focus on education is ever increasing. In our
technological, fast paced world, the focus on providing a well-rounded, ample
education is critical. To develop into intelligent, innovated adults, the
foundation of education must be engaging and copious.

Lifelong success begins early. Studies have shown that
children who enter the K-12 system unprepared rarely catch up to their peers.
The effects of early education are sustained into adulthood. Children having
participated in high quality preschool and elementary programs yielding better
academic achievements, increased employment and earnings, as well as reduced
crime and delinquency. Investments in early childhood educations have the
highest return-on-investment, seeing a return rate of 15-17% each year.

For students to perform at a competitive level, STEM
literacy in early education must be highlighted. STEM education teaches much
more than science and mathematics. By focusing on hands-on learning, students
can comprehend real world situations while developing problem solving,
leadership, critical thinking and creative thinking skills.

By instilling creative and critical thinking at a young age,
we establish a basis of innovation. Innovation is critical to building a
better, safer world. High Touch High Tech has worked for over 25 years to
establish early STEM education as a priority around the world. The foundation
of an enriching science education will propel modernization and minds on the
cutting edge.

 High Touch High Tech
offers programs to satisfy all STEM domains for students of preschool to middle
school ages. Our mission of STEM literacy in early education was founded more
than 25 years ago, and research continues to prove our approach to be most
effective.  Future scientists will
remember High Touch High Tech as their science inspiration.  

25 Years of Slime

In recent years, the slime trend has taken the internet by
storm. There are over 13 million posts with #Slime on Instagram! This trend has
even been responsible for glue shortages at craft stores around the world!

High Touch High Tech brought slime to students 25 years ago!
We were the original slime makers!

How is slime made? What makes slime so slimy? Science, of
course! To understand how this non-Newtonian fluid is created, we must
understand a little bit of chemistry. A non-Newtonian fluid is a substance that
is neither a liquid nor a solid! Slime will ooze out of your hands like a
liquid but can be picked up like a solid!

What makes slime so stretchy? We can thank polymers for
slime’s gooey, oozy qualities! Polymers are substances that are made of several
repeating until, these units joining like train cars! To create these polymers,
you must make the chemical reaction to create these polymers! Polymerization,
the chemical reaction that creates a polymer, happens when you mix all the
slime ingredients together!

In our ChemFun program, students are introduced to the world
of chemistry! Your students will become chemists, exploring chemical reactions.
They’ll even get to take home their very own slime!

For more than 25 years, High Touch High Tech has brought
students hands-on science! Throughout the years slime has been a fan favorite,
with a ‘how it works’ lesson at the very core!

Celebrating the Contributions of Black Scientists, Inventors, and Engineers

“Freedom Sun(g)” photo by Jennifer Rangubphai taken at The George Washington Carver Museum

Black History Month is celebrated
each February, recognizing the role that African Americans have served in U.S.
History. Generations of African Americans faced relentless adversity and their
achievements often went overlooked. Many African American scientists,
inventors, and engineers developed inventions that helped to advance human
history and to make our lives healthier and happier. Let’s learn more about
some of these amazing black scientists!

One of the most famous black
inventors is George Washington Carver. Carver is often called the Peanut Man,
having developed over 300 products using the peanut! These peanut inventions
include shampoo, shaving cream, animal feed, dyes, and paper! Contrary to
popular belief, Carver did not invent peanut butter. He did help to popularize
peanuts with the American public by encouraging use of peanuts to make soaps,
axle greases, insecticides, medications, glue, and frying oil!  

Mae Jemison was the first African
American woman in space, spending 190 hours, 30 minutes, and 23 seconds in
orbit. Jemison has degrees in chemical engineering, African American studies,
and even a medical doctorate! After Mae Jemison’s career at NASA, she founded
her own company that seeks to develop a love for science in students and helps
to bring cutting-edge technology to underprivileged schools around the world!

“My parents were the best scientists I knew, because they
were always asking questions.” – Mae Jemison

Garrett Morgan was another
trailblazing black inventor. He developed the original traffic signal, a
hair-straightening product, and even the first gas mask! Morgan’s breathing
device, called the “safety hood,” allowed wearers a safe breathing experience
free of smoke, gases, and other pollutants! Originally marketing this breathing
apparatus to fire departments, this gas mask was later built upon to provide
World War I soldiers from the toxic mustard gas being used in warfare. Though
Morgan’s gas mask saved many lives, his business was affected by the racial
discrimination of the time. Many people refused to buy his products due to the
fact he was African American. Morgan’s inventions saved many lives, from
firefighters and soldiers, to all vehicle operators and occupants!

Through education and a passion for
science, these black inventors and many others have greatly contributed to
advancing the life quality of people around the world. STEM education is the
key to unlock a better world, and reaching underrepresented communities draws a
unique perspective. Without black scientists there would be no elevators, air
conditioning, refrigerators, fire extinguishers, or electric light bulbs.  High Touch High Tech’s hands-on, STEM
education model reaches over 16 million students in 11 countries each year. We
pride ourselves on reaching the underrepresented in the STEM fields, and dream
of a world of diverse scientists.