Lego Education WeDo 2.0 Guided Projects – Science : Exciting

Lego Education WeDo 2.0 Robust Structure: Two boys building their earthquake simulator model.

Is it not EXCITING???

This wonderful Lego Education WeDo 2.0 also teaches Science!!!

Personally, Science is one of the subjects that is not easy for me to grasp. Don’t get me wrong. experiments were fine. I had fun doing them.

In fact, I had a good memory of the fun and excitement of our experiments in the classes. However, I had a hard time remembering the laws, principles and the Scientists behind them during our written exams. Oh, I just hope my kids will have a better memory than me! 😊

In these series of open projects on Science, Lego Education WeDo 2.0 lessons taught some basic principles on the different branches of Science.

Here are the first four guided projects:

WeDo 2.0 Pulling

WeDo 2.0 Speed

WeDo 2.0 Robust Structures

WeDo 2.0 Frog’s Metamorphosis

NOTE: I modified some parts of the lessons to suit the age and learning level of my kids. If you wish to view the original and more detailed Lego WeDo 2.0 Science Projects lessons, simply click the project’s name.

For the Lego WeDo 2.0 Getting Started Projects, please check the articles Lego Education WeDo 2.0 Getting Started Projects 1 and Lego Education WeDo 2.0 Getting Started Projects 2.

WeDo 2.0 Pulling

In this project, the kids will learn about the basic factors that causes pulling (or pushing).

Primarily, they will learn about motion, force and friction.

Those three terms though I understand them, I find it challenging to explain to my kids especially my five year old. So I got a little help from the net.

Lego Education WeDo 2.0 Pulling Robot

Definition of Terms:

TermDefinition
MOTION⛳ Simply a change in position.
⛳ In other words, it refers to MOVEMENT.
⛳ In short, something is MOVING.
⛳ Some examples are walking, running, swimming and throwing a ball.
FORCE🎈 This the the push or pull on something.
🎈 This requires two objects touching each other.
🎈 One object causes another object to move.
🎈 It can make an object change its direction or even change its shape.
🎈 It can make something move fast, slow down or stop.
FRICTION⛳ According to the dictionary, this is the resisting force.
⛳ This happens when two objects RUB each other.
⛳ Examples are: 1) when we rub our hands together
2) Sliding down
3) wheels rolling on the road

Project Background

The background story is that Mia and Max saw how machines pull heavy objects and they were truly impressed.

Now, they were wondering how objects move and tried to investigate.

Project Objectives

🎈 Introduce what are Motion, Force and Friction

🎈 Create a program to make the robot pull.

This project is interesting and challenging at a different level. Well, I encountered the terms above when I was in already in highschool.

But in this case, I am going to explain them to my five year old. I do not expect that he will fully understand as it might sound the same to him.

And it might just be one word to him ACTION or MOVE. 😉

Nevertheless, I hope he would have at least the impression of the factors that affect those actions

Project Tasks

🎈 Build a Pull Robot.

🎈 Create a program to make the robot pull.

🎈 Introduce Bevel Gear

The tasks may sound simple but there is actually challenge in them. For one, the Pull Robot moves not with a regular wheel connected directly to the motor.

The Pull Robot utilizes a Bevel Gear for its motion which actually affects its axis rotation. For that reason, the robot moves horizontally (sideward) instead of vertically (straight).

Explore Time

For the explore time, I asked my son to do a series of pulling activity on top of our wooden table.

Please take note, to do the activities on the same surface.

In that way, the kids will be able to recognize the difference in movement when there is friction.

Activities
🚩 Our first activity was simply to make the Pull Robot move.

So he can notice that it moves sideway instead of straight.
🚩 Next, I let him put some pulleys on the Pull Robot as its load.

Despite the load, the robot can still manage to move fast.
🚩 Then, we added the tires one by one.

He observed how the Pull Robot slowed down.

My son thought initially that was it was because the load got heavier.

At this time, I tried to explain to him about friction. By pointing out that the tire contains a kind of force that resist the pulling.
🚩 In our next activity, we removed the sliding bricks that help reduce the friction on the surface.

By doing so, he can compare the difference in the robot’s move with and without those sliding bricks.
🚩 For our last activity, we put a cardboard under the cart of the Pull Robot.

Then, we put the same load as before.

This is to show him that it was not the weight of the tires that caused the robot’s inability to move and pull.

That it was friction that caused it.

See post What is Lego Education WeDo 2.0 Core Set? for further information on the building elements and programming blocks.

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WeDo 2.0 Speed

Lego Education WeDo 2.0 Speed Robot

My son was enthusiastic upon seeing the image of our next model. Well, of course, it is a race car!!!

He actually got unhappy with the previous project, Pull Robot. For the reason that, it cannot be as fast as he wants it to be (because of friction 😅).

Project Background

The two kids, Max and Mia, saw on television how the race cars developed since it first came out.

Amazed at the speed of these cars, they wonder what factors contribute to make a car run faster.

Project Objectives

🪐 To make the students realize how the change in motor power affects the travel time needed to reach the same destination (distance).

NOTE: For older kids, it is good to introduce the formula for speed and show how to calculate the time needed to reach a certain distance.

🪐 Let the students experience how the size of the pulley (drive mechanism) affects speed.

Project Tasks

🚩 Build a race model.

🚩 Create a program for the race car to run. (Just let them follow the sample program).

🚩 Try running the race car in different pulley configuration.

The model may look like a cool race car. However, it will not run right away after starting the program.

In the same manner, that the race car will start running after the go signal and stop at the finish line. This race car will also start when something is place in front of it (in this case, the student’s hand) then it will stop when it detected the finish line (could be a card board or a box).

Explore Time

At first, I did not explain to my son what the program will actually do. I want to see if he will discover it by himself. So, I just waited until he asked for help. 😉

ActivitiesImage
🏆 Discover how the program works.

Here, we discussed how the car will start and stop.

In the program, the motion sensor was put-to-use twice as an input.

First, it is to make the race car RUN. This serves as the GO SIGNAL.

Second, it is to make the race car STOP. It indicates the instance the race car reached the FINISH LINE.
🏆 Change the motor power. But first, set the STARTING POINT and FINISH LINE.

Let the race car run from the starting line to the finish line at different speeds.

This is in order for the kids to realize how the motor power or speed affects the TIME it takes to reach the finish line.
🏆 Next, learn about the pulley configuration.

The first configuration had two pulleys of the same size. That causes the race car to run in normal speed.
🏆 The second configuration had two pulleys of different sizes. Changing the one connected to the motor to a smaller pulley.
🏆 We tried, another configuration, wherein we changed the one connected to the wheel smaller and the one connected to the motor bigger (the normal size).
🏆 Changing the wheels. This time we tried to discover how the size of the wheel affects the race car’s speed.

See post What is Lego Education WeDo 2.0 Core Set? for further information on the building elements and programming blocks.

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WeDo 2.0 Robust Structures

Lego Education WeDo 2.0 Earthquake Simulator

Although the project title says, “Robust Structures”. The main subject of this project is not really about the intimidatingly beautiful skyscrapers that stand strong and powerful.

Mainly, it discusses about earthquake. What causes them? What are the dangers brought by them?

Hence, in relation to this, the project tackles the strengths and weaknesses of different structures during earthquake. The robust structures are those that have resistance during earthquake.

Consequently, the word “robust” here more or less mean “resistant” rather than “strong”.

Project Background

Max and Mia watched a video about earthquakes which left them wondering how the buildings can be safe from them.

So, they went to investigate the designs of the buildings that make them earthquake resistant.

Project Objectives

🌟 Learn about the causes of earthquakes.

🌟 Discuss about their dangerous effects.

🌟 Discover the aspects that makes the buildings safe from earthquakes

Project Tasks

🪐 Build an earthquake simulator and model buildings.

🪐 Create a program for the simulator that uses motor power as the earthquake’s magnitude.

Basically, the simulator represents the earth’s shaking plate. Then, the different model buildings will be tested one after another. By adjusting the motor power, which represents the magnitude of the earthquake, the students should learn which building model has more resistance to shaking.

Explore Time

Just going along with the activities presented in the Lego lesson plan, one by one we tested each building model at different magnitudes (motor power).

Seeing how destructive the simulator can be, my kids called it “building destroyer”! 😅

Then, I asked them to build their own models for a robust structure that can resist the earthquake.

My two boys had a great time competing with each other competing who built the most robust structure. Since, none of them wants to lose, they could not stop building one structure after another.

See post What is Lego Education WeDo 2.0 Core Set? for further information on the building elements and programming blocks.

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WeDo 2.0 Frog’s Metamorphosis

Lego Education WeDo 2.0 Tadpole

After starting off the Science projects with Physics, Geophysics and Seismology, I think this last project on Biology will be like a dessert after the main meals. 😅

Although, kids may not be familiar with Biology as a branch of Science, the frog’s metamorphosis is a common knowledge. Since, they heard of them more than often in their story books and lessons in the schools.

Project Background

Our ever curious Lego buddies, Max and Mia, saw frogs in their backyard. Now, they want to know how frogs grow.

For that reason, they are going to do a research about the life of a frog and their environment.

Project Objectives

✨ Discover the life-cycle of frogs.

✨ Learn about the the place where they grow and live.

Project Tasks

🐸 First, build a model tadpole or froglet.

🐸 Create a program for the tadpole.

🐸 Morph the young frog into an adult frog.

🐸 Modify or create a new program to fit the behavior of an adult frog.

Explore Time

After having a short discussion about the frog’s life-cycle. We proceeded to tackle about their differences. Then, we talk about their habitat and some interesting facts about frogs.

In this activity, my two boys joined forces in building the models. Building the tadpole was easy since there is a building instruction. However, building the frog became a challenge since they had to depend on the image as their basis.

Moreover, the programming part for the tadpole went fine since they just followed the sample program. But my youngest boy became disappointed in making the program for the adult frog because he cannot make it hop! 😅

Well, until now we are still trying to figure out the possibility for making it hop and jump. For now, we have to settle in making move forward while making a croaking sound!

Definitely, we will share it with you should we find the way to make a hopping robot frog!

See you again in our next activities! 😊

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