STEM skills for kids include knowing about fundamental engineering concepts.  Check out our articles on how electronics components work.  Read about important principles and how to apply them.

Fact from Fiction: Real Inventions from Science Fiction

Some of our great modern inventions were born years ago in the minds of creative writers and artists.  Learn about the ways that science fiction has impacted our reality.   Cell phones Cell phone technology inventor Martin Cooper credits his inspiration...

Series and Parallel Circuits: Bonus Project

In this project, we'll explore the differences between series and parallel circuits.  We'll start with some vocabulary.  A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through...

What is a microcontroller?

All of our MakeCrate electronics subscription kits use an Arduino microcontroller as well as a variety of digital and analog sensors and displays to create nightlights, calculators, room alarms, and more. Because the microcontroller is a fundamental part of every...

Circuit Basics: Electricity Flow

Transcript: Let's take a look at the steps required to build a circuit that allows electricity to flow correctly. In each of the projects that we build at MakeCrate, we start by connecting a wire to the 5V connection on our Arduino to our breadboard, and then...

Voltage, Current, and Resistance: Ohm’s Law

Voltage, current, and resistance are three important and related concepts that help any circuit behave properly.  Get a basic introduction into their relationship in this short video.

How does an ultrasonic sensor work?

Learn the science and math behind an ultrasonic sensor. Transcript:  An ultrasonic sensor can be used to calculate how far away an object is. These sensors can be used to determine things like how far your car is from a wall, or whether or not your water bottle is in...

How does a photoresistor work?

Learn about the properties of semiconductors that allow photoresistors to work. Transcript: Let’s take a look at how a photoresistor works. A resistor is an electronic component that reduces the amount of current flowing through a circuit.  A variable resistor is one...

How does a buzzer work?

  Curious what is happening inside a buzzer? Check out this video. Transcript: Buzzers can be both fun and useful in electric circuits.We’ll use them a lot in MakeCrate projects, so let’s take a look at what is going on inside a buzzer to produce sound. The buzzer...

How does a breadboard work?

How does a breadboard work? The breadboard is a key part of every MakeCrate project. Let’s take a look at why we use them, why they are called breadboards, and how they work. Why use a breadboard? The type of breadboards we use are called solderless breadboards....

How do I know what level of resistance my resistor has?

How do I know what level resistance my resistor has? Through hole resistors like the ones in your projects have a series of bands on them that indicate how much resistance they provide. A resistor chart like the one below helps to decode the bands: For example, let’s...

Find products to help grow the next generation of STEM heroes!

MakeCrate classroom kits and subscription boxes teach kids fundamental coding and engineering skills so that they can embrace their inner STEM hero.  Fun, hands-on projects and an online learning platform help kids master problem solving and critical thinking while having fun!  Check out some of our products below, or shop our full product line. 


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