## ⭐ Lessons for March 20, 2020 ⭐

Welcome to Friday! Today is going to be a bit different than other day. For math, it’s only practice worksheets, so you can make sure you understand all the subjects right before we move to multiplication. And after that, we will do a little quiz. Please write in your answers in the comment section. Every Monday, we will choose somebody to be the winner and they will get a fridge magnet:

PE 🏃‍♀️

Today, we will be working on our back muscle. All this sitting can hurt your back really badly, so it’s important to make it stronger! Please follow my video:

Math ➕➖✖➗

You can check your solutions right here:

Science 🔬

Question 1: What do you call middle of a hurricane?

Question 2: What do we call process of creation of a crystal?

Question 3: How do you prevent spread of a virus?

Question 4: Can you name the two types of volcanoes?

Social Science 👩‍🎓

Question 1: What made Frida Kahlo famous?

Question 2: Name one of Indira Gandhi’s accomplishments

Question 3: Can you name the two elements that Marie Curie discovered?

Question 4: Name one of Queen Elizabeth I accomplishments

## ⭐ Lessons for March 19, 2020 ⭐

PE 🏃‍♀️

We should start our day with some exercises. Here is your workout for today:

• Do the jumping jacks to warm up (they are missing from this video – ups!)
• Stretch out your legs and back
• And one more stretch for your legs!

Here is my YouTube video showing what to do – exercise with me!

Math ➕➖✖➗

Regrouping

Today’s lesson is about regrouping when you do two-digit subtraction. This is when you subtract one number from another and you have bigger digit in the first number than in the other. Let’s use an example to help me explain. We will be figuring out how much 41 – 18 is.

First, write them down like this:

4 1

-1 8

Make sure that the first number is on top – order of numbers matters when you subtract!

First, you need to subtract numbers on the far right side. But oh-oh! 1 is larger than 8. Now what 🤔

Now you’re going to go in the front and cross off the 4 and make it a 3. Go into the last number and make it 11:

3 11

4 1

-1 8

Now you subtract 8 from 11 and that works – it’s 3:

3 11

4 1

-1 8

3

Now all you have to do is subtract 1 from 3, which is 2:

3 11

4 1

-1 8

2 3

Here is my video with instructions:

Here is a worksheet for you to practice:

And solutions to the worksheet:

Science 🔬

Volcano

Volcanoes are mountains with lava inside. Majority of volcanoes on Earth are not active. Being active means when the lava comes out of them. There are other things that come out of volcanoes during an eruption: steam, gasses, ash and pieces of rock. Lava can flow out of the top or the sides.

There are two types of volcanoes:

Shield volcanoes – lava usually flows out of them without big explosions, causing it to create layers of rocks made of cooled down lava. They are usually wide and their sides aren’t steep. An example of a shield volcano is Mauna Kea in Hawaii.

Stratavolcanoes – these are steep mountains made of hardened lava. They sometimes erupt, but you can’t really tell when and it can be a very long time between eruptions. The most famous stratavolcanoes are Mount Fuji in Japan and Vesuvius in Italy.

Parts of a volcano:

Social science 👩‍🎓

Queen Elizabeth I

Queen Elizabeth I was born on September 7, 1533. Her parents were King Henry VIII and Anne Boleyn. She had an older half-sister named Mary and a younger half-brother named Edward. After King Henry VIII died, Edward became king, but he didn’t rule long. Since he didn’t have children, his sister was supposed to become queen. Unfortunately, there was a fight over which one: Elizabeth or Mary. Elizabeth won. She never got married and did not have children. She died March 24, 1603.

Queen Elizabeth’s accomplishments:

• She made Protestant religion England’s official religion
• When she was the queen, a lot of artists worked in England. William Shakespeare wrote his plays. There were many other writers, poets and composers there, too
• She paid for many trips across the Atlantic Ocean, which led to colonization of America

Trivia of the day

Caffeine works as a pesticide (kills bugs) in a coffee plant.

Word of the day

Temporary – not permanent; not lasting.

Activity of the day 🏛

Watch me create a volcano explosion at home:

To create your own volcano explosion, you can use some items from around the house. Here is how to make the exploding lava:

• Put water in a bottle and add some food dye (red, possibly orange or yellow)
• Add 6 drops of laundry detergent
• Add 2 tablespoons of baking soda

## ⭐ Lessons for March 18, 2020 ⭐

PE 🏃‍♀️

We should start our day with some exercises. Here is your core workout for today:

• 20 jumping jacks to warm up
• Do plank for 30 seconds
• Do 10 sit-ups
• Do 10 Russian twists on each side

Here is my YouTube video showing what to do – exercise with me! (and excuse my headless jumping jacks 😂)

Math ➕➖✖➗

Two-digit subtraction

Today’s lesson is about two-digit subtraction. This is when you subtract two numbers with two digits from each other. Let’s use an example to help me explain. We will be figuring out how much 53 – 12 is.

First, write them down like this:

5 3

-1 2

First, you are going to look at the last two numbers. You are going to subtract the top one from the bottom one:

5 3

-1 2

_1

Now, you do the same for the front numbers:

5 3

-1 2

4 1

And now you have the answer: 53 – 12 = 41

Here is my video with instructions:

Here is a worksheet for you to practice:

And solutions to the worksheet:

Science 🔬

Virus

Viruses are tiny living creatures that get into cells of other creatures (including people) and get them sick. They are so tiny that it’s hard to find them, even using microscopes. They destroy data in cells and kill them. Viruses need to be inside other living beings to survive. But they are everywhere and we have to fight them all the time, even though we can’t see them.

Common illnesses caused by viruses are cold, flu and measles. Some people try using antibiotics to get better, but those do not kill viruses. There are few medications that actually kill viruses. The best thing to do is to prevent people from getting sick, including getting vaccinated and practicing good behaviors. Wash your hands often and well. Don’t sneeze or cough on other people. You should cough into your elbow or a tissue instead.

Social science 👩‍🎓

Marie Curie

Marie Curie was born on November 7, 1867 in Warsaw, Poland. When she was a teenager, she taught school to earn money. She wanted to go to school in Paris, France. In college, she met Pierre Curie, her future husband and research partner. They had a daughter together, named Irene Curie (later Irene Joliot-Curie, another Nobel-prize winning lady!). She died on July 4, 1934 from cancer caused by her research.

She discovered two radioactive elements, radium and polonium. With her husband, they developed theory of radioactivity, which earned them a Nobel Prize in physics. This made her the first woman to win one. Eight years later, she won a Nobel Prize in chemistry for discovery of radium and polonium. To this day, she is the only person to have won Nobel Prizes in two different fields of science.

Trivia of the day

The Olympic Games originated in Greece.

Word of the day

Frontier – a wilderness at the edge of a settled area of a country.

Activity of the day 🏛

Learn to make mashed potatoes:

## ⭐ Lessons for March 17, 2020 ⭐

PE 🏃‍♀️

Today, we will do soccer for our workout.

• Bounce the ball on your knee – 10 times each side
• Practice running with the ball around the cones
• Practice passing ball between two cones

Here is my YouTube video showing what to do – exercise with me!

Math ➕➖✖➗

Today’s lesson is about three-digit addition. This is when you add two numbers with three digits to each other. Let’s use an example to help me explain. We will be figuring out how much 122 + 452 is.

First, write them down like this:

1 2 2

+4 5 2

First, you are going to add the last two numbers to each other:

1 2 2

+4 5 2

_ _ 4

Second, you need to add the middle numbers:

1 2 2

+4 5 2

_ 7 4

Now, we will add the two front numbers to each other:

1 2 2

+4 5 2

+5 7 4

But this works only if the two numbers in each column added to each other are less than 10. What if they are more? 🤔 Here is an example: let’s add 489 + 452.

We start the same way:

4 8 9

+4 5 2

Now we add the last two numbers:

4 8 9

+4 5 2

_ _11

Oh-oh! We can’t have a 11 in there! Now we have to put the 1 below the 5 and the 7 and put 1 on top – above the 8:

1

+4 8 9

+4 5 2

_ _ 1

Now we have to add 1 + 8 + 5 in the middle:

4 8 9

+4 5 2

_ 14 1

Again: not good! We now ended up with a 14 below the 5. Like with the 9 and a 2, we leave 4 below the 5 and put 1 above the 4″

1

+4 8 9

+4 5 2

9 4 1

And now you know that 489 + 452 = 941

Here is my video with instructions:

Here is a worksheet for you to practice:

And solutions to the worksheet:

Science 🔬

Crystals

Crystals are made of very well organized (really, really tiny) particles. They have a special pattern, which is different for each particle. Here is what they can look like:

When you look at crystals, they usually have flat surfaces and sharp angles – no rounding in there!

Creation of crystals is called crystallization. The particles are in a liquid, like water and then when the liquid evaporates, it leaves the particles in an organized structure – the crystal.

Computer and some TV screens are made from liquid crystals. So it’s possible that you are reading this lesson thanks to crystals!

Flat surfaces of crystals make them shiny and that’s why we make a lot of jewelry out of them.

Social science 👩‍🎓

Indira Gandhi

Indira Gandhi was born on November 19, 1917 in Allahabad, British India. Since then, India became independent of England and now the place where she was born is called Prayagraj, India. She studied in Oxford, but never finished. While still living in England, she got married. Indira Gandhi and her husband had two kids. Gandhi was her husband’s name and she was not related to Mahatma Gandhi. Back in India, she worked for the government and in 1966, she became the first woman to be India’s prime minister and one of the first women to be elected to lead a democratic country. Indira Gandhi was assassinated by her own bodyguards on October 31, 1984.

Indira Gandhi’s main accomplishments:

• Green revolution – after the independence, there was not enough food for everybody in India. She made sure that the Green Revolution happened. It brought new plants to India, making sure there was enough for everybody to eat
• Banks – she made the government take over the banks (nationalization). This way if the banks went out of business, people wouldn’t lose all of their money. It also made banks work for regular people – before that, they were only interested in companies and very rich people
• Bangladesh – Indira Gandhi made sure that the Bengali people had a country of their own. Their land used to be part of Pakistan, but they were treated really badly
• First Indian to go to space – her government made it possible for a man from India to go fly to space with the Russians
• When she was the prime minister, she made India become a very important country in that part of the world.

Trivia of the day

Planet nearest to the Sun: Mercury.

Word of the day

Din – a loud, harsh, or strident noise.

Activity of the day 🏛

Watch me make crystals at home:

## ⭐ Lessons for March 16, 2020 ⭐

The schools are out for a lot of us, but we should keep learning. I will be posting daily lessons while I am at home. I hope you will join me in my studies!

PE 🏃‍♀️

We should start our day with some exercises. Here is your workout for today:

• Do 20 jumping jacks to warm up
• Do 10 lunges on each leg – try to lift yourself up, not back
• Do 10 squats – keep your feet flat on the ground!
• Balance exercise: lift left arm and right leg. Now bend down slowly and try touching your left toes with right hand. Repeat it 10 times and then do the same thing on the other side

Here is my YouTube video showing what to do – exercise with me!

Math ➕➖✖➗

Today’s lesson is about two-digit addition. This is when you add two numbers with two digits to each other. Let’s use an example to help me explain. We will be figuring out how much 23 + 12 is.

First, write them down like this:

2 3

+1 2

First, you are going to add the last two numbers to each other:

2 3

+1 2

_5

Now, we will add the two front numbers to each other:

2 3

+1 2

35

But this works only if the two numbers in each column added to each other are less than 10. What if they are more?🤔 Here is an example: let’s add 37 + 45.

We start the same way:

37

+45

Now we add the last two numbers:

37

+45

_12

Oh-oh! We can’t have a 12 in there! Now we have to put the two below the 5 and the 7 and put 1 on top – above the 3:

1

+37

+45

_2

Now we have to add 1 + 3 + 4:

37

+45

82

And now you know that 37 + 45 = 82

Here is my video with instructions:

Here is a worksheet for you to practice:

And solutions to the worksheet:

Science 🔬

Hurricanes

Different names for a hurricane

In different parts of the world, we use different names for the same kind of storm. In the Indian Ocean, they are called cyclones. In the Southeast Asia, they are known as typhoons. To the scientists, they are tropical cyclones.

Parts of a hurricane

A hurricane is a large rotating (meaning spinning in circles around its middle) storm. In the middle, there is a circle called an eye. The weather in there is relatively nice and the winds are weak. The most dangerous part of a hurricane is the eye wall. This is because that’s the place with the strongest winds – they can be as fast as 155 miles per hour! That’s more than twice as fast as you can drive on a freeway! The arms sticking out are called rain bands. This is where majority of the rain comes from during the storms. This can be dangerous because it causes floods on land.

So the hurricanes are dangerous because of strong winds and rains, which can cause floods. Another danger from hurricanes is called storm surge. This is when winds push water up on land. It can cause really bad flooding up the coast.

How do hurricanes form

When the ocean water temperature is over 80 F, it evaporates (turns into steam) and forms huge clouds. It happens really fast and causes strong winds. Earth’s spinning causes the winds to go in circles. In the Northern Hemisphere, hurricanes spin counterclockwise, while in the Southern Hemisphere, they go clockwise. Normally, when the storms go over land, they get weaker because there isn’t much water to evaporate in there.

When and where do hurricanes form?

Hurricanes form at the end of the summer and in the fall, when the ocean water temperature gets to 80F. This means it can’t happen too far away from the equator because it doesn’t get hot enough in there. There is not enough force to cause spin too close to the equator, so they don’t form there, either.

Social science 👩‍🎓

Frida Kahlo

To celebrate Women’s History Month, we are going to learn about Mexican painter, Frida Kahlo!

Frida Kahlo was born on July 6, 1907 in Coyoacan, Mexico City, Mexico. When she was 6 years old, she had polio. This was an illness that caused people’s muscle not to work right and may change how body parts are shaped. This happened to Frida. When she was 18, she was in a bad bus accident and she got very hurt. She started to paint when she was recovering. She married another artist, Diego Rivera. Their relationship was not a happy one and eventually they divorced. Frida Kahlo died in Mexico on July 13, 1954 the age of 47.

Frida Kahlo belonged to surrealism movement in art. Her paintings were bright and colorful. She was on a lot of them. She used things that happened to her, her pain and difficulties of women as her inspiration. She was the first Mexican woman to have her paintings displayed in the Louvre in Paris.

Trivia of the day

There is an animal that never sleeps. It’s called bullfrog.

Word of the day

Announce – make known.

Activity 🏛

Enjoy touring the British Museum: