How To Make Your Own Lego Fidget Spinner

Lego Fidget Spinner

We are going to show you how to make a regular sized Lego Fidget Spinner and a mini one too!

Regular Sized Lego Fidget Spinner Instructions

The picture above shows the Legos used to build the regular sized Lego fidget spinner.  You can use either the 4x2 or 3x2 sized blocks.  Here we are using four 3x2 and four 4x2.    The green circular piece if from a Ninjago spinner set.  It isn't necessary, but makes it look really cool when it spins!

Step One

Add the four 3x2 pieces to the back of the large circle piece.  Space them evenly around the circle.

Step Two

Add the 4x4 blocks on top of the 3x2 blocks.  If you can't find 2x2 blocks you can use 2x1 blocks or studs instead. 

Step Three

Place one of the small circles onto the crossaxle as shown in the picture above.  Then place it through the large circle.

Step Four

Add the four 4x2's (or 4x3's) on top of the large circle.

Step Five

If you have a Ninjago spinner item to add to your fidget spinner, put it on next.  Finally add the remaining circle piece to the other end of the crossaxle.  Have fun spinning!

Mini Lego Fidget Spinner Instructions

The picture above shows the pieces needed for the mini Lego Fidget Spinner.  If you don't have four 2x1 blocks, you can use studs instead.   

Steps One, Two, and Three

First add four of the 2x2 blocks to the back of the large circle.  Flip it over and add either 2x1's or studs on top of the 2x2 blocks.  Then add the remaining 2x2 blocks on top as shown above.

Steps Four and Five

Place one of the small circle pieces on the crossaxle as shown above.  Next place the crossaxle through the large circle.  Finally add the other small circle to the end of the crossaxle.  Now you are all ready to spin!

Easter Egg Dying Experiment

What you need for this experiment

4 Egg Dye Tablets

4 Boiled Eggs

Water

Vinegar

4 Small Containers

Experiment Directions

Add an egg dye tablet to each of the containers.
Add 1 tablespoon of vinegar to one container, 2 tablespoons of vinegar to another container, and 3 tablespoons of vinegar to a third container.
After tablets dissolve, add 1/2 cup water to each of the 4 containers.
Add a boiled egg to each container.
Wait 15 minutes and see which egg is dyed the best.

Why does it do that?

The egg dye is a type of dye called an acid dye. Vinegar is an acid and mixing it with the water will create the ideal conditions for the egg dye to color the egg.   The more vinegar you use, the more acidic your dye solution.  The more acidic your dye solution, the more the dye will adhere to your eggs.  This is why the most brightly colored egg was the one with the most vinegar in the solution.

Erupting Sand Volcano

What you need for this experiment

Sand
Baking Soda
Vinegar
Empty Bottle
Food Coloring
Dishwashing Soap
Funnel

Experiment Directions

Form your volcano out of the sand.  You may need to use some water to help it stay together.
Make a hole in the top.  Place bottle in the hole. 
Add some food coloring to your vinegar.  This isn't necessary for the reaction, but makes it more fun!
Place tablespoons of baking soda in the bottle in your volcano.  You will probably want to use a funnel for this!
Add vinegar to the bottle. Experiment with different amounts of baking soda and vinegar to see what happens. 
Next, try it again but add some dishwashing soap to your vinegar before adding it to the baking soda. 

Why does it do that?

Baking soda and vinegar react with each other because one is an acid (vinegar) and the other is a base (baking soda). This is called an acid-base reaction.  Baking soda is sodium bicarbonate (NaHCO3) and vinegar is acetic acid (HCH3COO).   When you put the two together, the reaction produces sodium acetate (NaC2H3O2) , water (H2O), and carbon dioxide (CO2).  It is the carbon dioxide bubbling up that produces the "erupting" effect.  Adding the dishwashing soap produces a more dramatic eruption due to the escaping carbon dioxide "blowing bubbles" in the dishwashing soap.

How To Make A Homemade Lava Lamp

What you need for this experiment

Vegetable Oil

Water

Empty Bottle

Food Coloring

Alka Seltzer

Funnel

Experiment Directions

Fill bottle 3/4 of the way with vegetable oil.
Fill the bottle most of the rest of the way with water.  (Don't overfill!)
Add 10 drops of food coloring.
Drop in 1/2 an Alka Seltzer tablet. 
Enjoy lava lamp!
When bubbles stop try it again with an entire tablet. 
Add a tablet any time you want to enjoy the lava lamp.

 

Why does it do that?

It is all about density!  What is density you ask?  The density of a material is determined by the amount of mass it contains per unit volume.  Mathematically, it is calculated by dividing the mass by the volume.  In our experiment, the water is more dense than the oil.  That's why it sinks!  When you drop the Alka Seltzer tablet into the water, the baking sodium and citric acid in the tablet react to form carbon dioxide.  Our food colored water droplets hitch a ride on the carbon dioxide, which you see as the "lava" bubbles going up.  Once they reach the top, the carbon dioxide escapes out into the air and the "lava" bubble falls back down.   This reaction continues until the Alka Seltzer tablet is used up. 

Welcome!

Welcome to Kids Do STEM!  My name is Falyn and I want to share my love of STEM with you.  I'm eleven years old and in the 5th grade.  We are going to make experiments, tell jokes, and answer your "why does..." questions.  So come along, join the ride, and above all else, have fun!
Welcome to Kids Do STEM!  My name is Falyn and I want to share my love of STEM with you.  I'm eleven years old and in the 5th grade.  We are going to make experiments, tell jokes, and answer your "why does..." questions.  So come along, join the ride, and above all else, have fun!