English – Sida 2 – Science Ed

Pop corn and Density

You will need:

A plastic container with a lid
Unpopped pop corn
A large marble
A ping pong ball

Implementation

Put the ping pong ball at the bottom of the container.
The fill the container about 2/3 of the way with corn. Make sure that the ping pong ball stays at the bottom. Then place the marble on top.
Put the lid on and shake it up! It doesn’t matter if you shake it up and down or side to side… Just shake! It won’t take much.

Ta da! The marble has turned into a ping pong ball!

The Science

The ping pong ball is much less dense than the corn, so it quickly makes its way to the top of the corn. The marble is more dense than the corn, so it sinks down into the corn. This is the same concept as the ping pong ball floating in water – the ball is less dense than the water, so it floats. Everyone expects a ping pong ball to float in water, but the way it behaves in the corn is really fascinating!

Disgusting Science: Rot Museum

Grab some jars with lids that will seal tight. In each jar put a food that you want to observe.

Seal up the jars and place them somewhere where they won’t bother you. Being by a window will cause a lot of condensation in the jars due to the heat from the sun beating into the jars. This can make things mold quite a bit faster. You could try them in the dark if you want to prevent that. Or do both and compare!

Start with predictions, which rots the fastest, which will grow mold first, or last…

The worst part of the entire process is opening those jars when the project is done.

I warn you it is a disgusting science experiment.

The experiment was found at the blog TeachBesideMe

How long is the paper in a toilet roll?

A simple experiment where you can think about units of length, estimation of length and how can so much paper fit on a still quite small roll.

Let the children write their name on a piece of paper that is then attached to its own stick.
Draw a starting line.
Let the children put the stick down in the ground where they think the paper will run out.
Roll out the paper starting from the starting line.

The roll will probably roll longer than the kids guessed.

NB! Check that you have sufficient space to roll it out before you start to roll it with the children. It’s quite a stretch on a full roll!

Robot Alphabet Craft

I found a alphabet made out of robots from the littlebinsforlittehands blog

NOTE: A suggestion for each letter robot is provided, but feel free to use your creativity when assembling the robots! You can even borrow pieces from other letters!

Tips For Alphabet Crafts in the Classroom

STEAM Integration: Introduce the alphabet robots as part of your STEAM curriculum. Discuss the science behind robotics, the technology used in building robots, and the engineering principles involved in their design.

Letter of the Week: Dedicate each week to a different letter of the alphabet and its corresponding robot. Explore words that start with the featured letter and encourage hands-on exploration with the associated robot craft.

Collaborative Projects: Foster teamwork and collaboration by assigning group projects where students work together to design and build a giant alphabet robot display for the classroom.

From STEM to STEAM: The Educational Value

This letters of the alphabet robot activity seamlessly integrates STEM concepts into the creative process:

Science: Children learn about the basics of robotics, including how robots are built, how they function, and the real-world applications of robotics technology.

Technology: As they color and assemble the robots, kids engage with simple engineering principles and learn about the technological components that make them work.

Engineering: Through hands-on construction, kids develop fine motor skills and spatial reasoning abilities, which are essential for engineering and design.

Arts: Creativity is at the heart of this craft activity, as kids express themselves through color choices, decorations, and storytelling, reinforcing the A in STEAM.

Mathematics: This activity offers plenty of opportunities for mathematical learning, from counting robot parts to identifying shapes and patterns in their designs.

Robot Alphabet Crafts

Build a far flying paper airplane.

If you want to start with a challenge for the children present this video from NASA for them. Have them reflect over what they learnt and try to build an airplane.

Or, why not let them make one first attempt first at constructing an airplane, watch the video second, and then try to build a second airplane and see if it will out do the first.

In the end of the blog will I share twoPDF-files with some models you can build (Thanks to the STEAMpoweredFamily blogg)

The Science Behind Paper Airplanes

Lift

Lift is the force that helps an airplane stay up in the air. Different paper airplane designs create lift in different ways. For example, some airplanes have wings that are longer or wider, while others have wings that are more curved. These features help the airplane catch the air as it moves forward. When the air moves faster over the curved or longer wings, it creates a force called lift, which pushes the airplane up. So, designs that have bigger or curved wings tend to generate more lift and can fly higher and farther.

Drag

Drag is the force that tries to slow down an airplane as it moves through the air. Some paper airplane designs have sleek and streamlined shapes, while others may have more folds and creases. Smooth and streamlined designs help reduce drag because the air can flow smoothly around the airplane. Less drag means the airplane can move through the air more easily and go faster and farther.

Weight

Weight is the force that pulls objects down towards the ground. Lighter paper airplanes can stay in the air longer because they are not pulled down as much by gravity. So, using lightweight paper or making a lighter airplane by using less paper can help it fly longer distances.

Balance and Stability

Balance and stability are important for a paper airplane to fly well. Some designs have features like fins or small folds at the back, which help keep the airplane steady and balanced in the air. This stability allows the airplane to fly straighter and farther.

Tips to Fly Further

1. Start with More Power

When you use a launcher, you can pull it back and let it go to launch the plane. The launcher has a lot of power, so when you release it, the plane gets a big push forward. This extra power helps the plane go faster right from the start.

2. Consider the Launch Angle

The angle at which you launch the plane is also important. By launching the plane at a slightly upward angle, it helps it go higher into the sky. When the plane goes higher, it can stay in the air longer and fly farther.

Models for airplanes

How to Make Awesome Paper Airplanes (PDF, 956 kB)

How to Make a Paper Airplane with Launcher (PDF, 378 kB)

Balloon racer

Building and measuring lengths

Steg 1 Material

LEGO Pieces
LEGO Wheels
LEGO-axis parts
Balloon

Phase 2 Activity

Build a car model. When building a car, consider where it is best for the balloon to be and how the weight of the Lego can balance as the car goes. When building the back of the car (where the balloon is attached), remember not to leave too much space around the mouth of the balloon, otherwise there is a risk that the balloon will fly off without a car.

Inflate the balloon and let your racer go.

If the racer didn’t succeed the first time, rebuild and try different models. When the drivers are ready, a measurement session can be held where each racer is put in turn to ride. The distance can be measured with a tape measure or with an iPad tape measure using the app.

Phase 3 Why

Engineers develop and solve problems.

How to build a car where the balloon stays. Try to get the car to move without giving it speed with your hand.

Idea taken from STEAM Turku

Physics on a swing

Let’s get acquainted with pendulum movement, like swings on a swing. What effect does the weight of the object and the length of the string make on how the object turns.
What do you notice?

Phase 1 Material

string
tape
measure
scissors
Items with different weights (e.g. toys, weights )
Paper and pens for any notes

Phase 2 Activity

Use a tape measure and measure out pieces o f string of different lengths (e.g. 1m, 60cm and 30cm).
Cut the strings 10-20 cm longer than measured above. Cut up two pieces of each length.
Tie any object to the other end of the strings.
Grasp the free end of the string with your fingers and set the object in motion. Try to keep your hands on the same place when the object oscillates, like swinging in a swing.
Can take two strings of the same length in each hand and observe which object is heavier.
It is then observed which has a larger pendulum movement, which is faster, and which one slows down faster when no additional impetus is given.
After that, strings of different lengths can be but objects of equal weight to the ends of the wire. Now you notice which pendulum moves bigger, which one is faster, and which one slows down faster, when no further impetus is given.

Modification

This can also be tested with a yo-yo or a similar object with a string and weight at one end.
If desired, you can also make a table to compare different string lengths and the pendulum movement of something in a child-friendly way.

Idea taken from STEAM Turku

From Angles to Triangles

WARM UP

1) Statues at Different Levels

Create different, clear geometric shapes by standing still like statues. Create statues at floor level (on the ground), at intermediate level (sitting or kneeling), and at a higher level (standing). You can also create shapes together.

2) Body Triangles

What kind of different triangles can you create with your own body? Can you make a really small triangle? Or a really big one? With what different parts of the body can you create a triangle? What if you create triangles with one or two classmates?

3) Secret Triangles

Stand in a large room so that everyone has their own space around them. Each student must choose two other students, who can be their secret triangle friends. No one should reveal which students they have chosen. When the music starts playing, everyone is allowed to move freely in the room, but you must make sure that you are always at an equal distance from both your triangle friends.

2) Rubber Band Triangles

Divide into groups of three. Each group stands inside a ring created by a long rubber band. Each group should create a triangle using their rubber band. The groups are allowed to move freely to the beat of music. How does the triangle change when the tips move? Try different levels and poses. The rubber band can be held at the waist, ankles, wrists.

TASKS

1) Angles With Arms

Stretch out both arms in front of you. Then a smaller or larger angle is formed between the arms. If you are in a room where the corners consist of 90-degree angles, you can stand in a corner and try how it feels on your arms to form an angle of 90 degrees. What does the angle between the arms look like if it has less or more than 90 degrees?
Divide the room in half with a line. One half is too blunt angles, the other too acute angles. The arm angles are allowed to move freely on both sides of the centerline, but when they hit the centerline, they should stop and stiffen to 90-degree angles. You get away from the center line when another angle hits the center line, so that the angles together amount to 180 degrees. After that, both angles are allowed to continue their journey in any half of the room.
Feel free to use some type of background music in the assignment!

2) Triangle Experiment

The task is a continuation of the previous task with different angles in the room. When the music stops, all the students should stop moving and keep the angle they have between their arms unchanged. Then the students should seek out two other students and try to form a triangle with them.
What do you notice? Can all groups form a triangle? You notice quite quickly that any three angles cannot form a triangle together.

3) Line – or triangle?

Demonstrate physically that the sum of a triangle’s angles is 180 degrees.
A student should stand at the centre line and form a 180-degree angle with their arms. Another student stands next to them, and the first student reduces their own angle, so that the sum of the two new angles is 180 degrees. A third student stands between the first two, and now both first two angles need to be smaller for the third to be able to participate. The sum of all three angles should now be 180 degrees. All three students must make sure that their own angle does not change size. After that, they can move away from the line and form a triangle. Will you manage to form the triangle?
The task description can be changed depending on whether the sum of a triangle’s angles is a new or a familiar theme. The task can be rephrased into a problem, e.g., as follows:
- Start at the line where you have created three angles (as above), and now form a triangle of the angles. What can you conclude about the sum of the angles of the triangle? OR
- You have been given a line with an angle of 180 degrees. How can you use your body to justify that the sum of a triangle’s angles is also 180 degrees?
You can illustrate the sum of a triangle’s angles using fingers, legs, or feet. Which way is easiest?

The idea is taken from Lumatikas material.