Showing results by narrator "David Armstrong" in All Categories

Yo and Jennifer taste different types of fruit. Some fruits are sweet and some are sour. Cucumbers aren’t sweet or sour. Jennifer doesn’t like green food, and Yo only likes red food, like tomatoes and strawberries. Yo says yellow is a sour color and lemons and grapefruit are sour, too. Yo’s mom lets Jennifer try pineapples. Will Jennifer like pineapples? What kind of fruit will they try next?

What would we do without wheels? We use wheels for all kinds of things, including transportation. Learn about alternatives for transportation other than the wheel! Do you use any of these different ways of moving around?

Do you like to play basketball? Learn how to shoot free throws using science! What is an arch? What is the effect of resistance and drag on the ball? How do you use the forces of physics like angle, backspin and angle? Learn to shoot free throws like a scientist and improve your game!

Do you know how buildings you see in your city got there? Before buildings are built, machines that move the ground are used! The excavator or digger move old ground away, preparing the space for a new building! A driver sits in the cab where all the fun begins! The tools to control the machine are inside the cab. Levers control the arms which do all the digging. How does the digger’s body move?

What does the school you attend look like? Does it have two floors? Does it have a playground? Look at the building plans the architect has drawn for Hopperville’s new school. Next, the old building needs to be removed with machines like a crane and a wrecking ball. Only the excavator can build a big, deep hole for the building. Find out what the surveyor does!

Yo and his dad are walking their dog, Lips, when they discover that Lips is cold and needs his own coat. Now, Yo wants to make a coat for Lips—but he doesn't know how! Together, Yo and his dad, make a coat for Lips that they measure, cut and sew from an old blanket! What pattern of fabric do they use for Lips coat?

Have you ever heard of the Iditarod? Learn all about the history behind the iconic sled dog race, as well as, what racers and their dogs go through as they brave Alaskan winter along the race trail.

Yo and his father are on an adventure in the snow—but he hates his snowshoes! He thinks he can go faster without them. So his father challenges to take try and take his snowshoes off. Will Yo be able to move quicker without his special shoes?

Yo's toy giraffe is getting wet from the rain outside—he needs to find a way to keep it safe! Yo attempts to build a tower with blocks to shelter his toy from the wind and rain, but the wind knocks over the blocks. What construction advice does Yo’s mother give him that saves his toy giraffe’s tower from blowing over?

Learning a new sport can be exciting and difficult! Yo is trying to learn how to play T-Ball, but it’s harder than it looks. Luckily Yo’s Dad is here to help, and after instructing Yo on the best way to stand and swing, something amazing happens!

It’s time for bed! As Yo is being tucked in for the night, he notices his toys aren’t the same color in the dark as they are in the daylight. Yo wants to know why his train is no longer red and his ball is no longer green!

Did you know that sound vibrations make music? Learn how different musical instruments like guitar, drum, xylophone, and trumpet, make sound vibrations from the movement of strings or air—that together make music! Follow the activity to make your own instrument from straws! Experiment with short and long straws to discover which makes a high or low sound.

Eyes are organs that allow you to see the world! Learn about the anatomy of the eye and how it works to allow you to see. Discover how your vision is created through connections between your eye and brain. You won’t believe your eyes when you see a 3D movie! Special 3D glasses help your brain view a mixture of two different camera angles and colors from each lens. Have you ever seen a 3D movie?

Imagine taking a flight to the stars! Yo pretends to take a rocket into the sky to visit the stars–only he wonders if he will see the stars. Yo doesn’t want to crash into them if he can’t see them!

Germ Busters are on patrol! See the Germ Busters fighting bad germs in your blood marking them for destruction. The Busters are a team of antibodies that come from medicine you get from a shot. They are weak germs that can’t make you sick. Germ Busters keep protecting you from germs if they get inside your body again. Will you join the Germ Busters to fight the germs?

A big snowstorm hits Lark street and people in the neighborhood find ways to help each other and have fun! People shovel snow–Mr. Thompson pushes the snow out of the street with his snowplow. Maria helps her neighbor, Mr. Russel, get his groceries. The families on Lark street have fun in the snowy weather, too! They build snowmen and build ice sculptures. How do you have fun in the snow?

Do you know how the anatomy of the eye allows us to see colors? Learn about the part of the eye called cones. Cones are like sensors that detect colors. The more cones a person or animal has, the more colors the eye perceives. Can you guess if your pets see you in full color, or if you see your pets in full colors?

Yo and his grandfather have car trouble on their way to the movies–their car breaks down! John the tow truck driver helps them move the car to a repair shop. Yo tells John the car made noises then the car stopped. John shows Yo how a tow bar slides under the car, and a lever lifts the car up onto the truck to be taken to the repair shop! How did the lever help make John’s work easier?

Have you ever had an electrical power outage at home? In 2003, the largest blackout in United States history left millions of people without power for days! Learn how power generation plants are connected to the power grid that distributes electricity to regions of the country and to homes. What causes power outages? How does losing power affect daily life? What can people do to conserve energy?

Do you know how the buildings in your city got there? Before buildings are built, different types of machines that move the ground are used! Some are large like the excavator or digger that moves old ground and dirt away, preparing the space for a new building! A bulldozer clears away old stones and dirt. The scoop, called the loader, does many jobs–it smooths, scrapes or carries dirt away?