Jessie Antonellis-John
Math and Science Instructor
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Co-authored Articles (36)
How to
Read a Ruler
Need to measure something but getting hung up on all those lines on a ruler? You're in the right place. We're here to explain what the ruler markings mean so taking measurements will be a breeze. Whether you need to know...
How to
Make a Faraday Cage
The Faraday cage (or shield), named after Michael Faraday, is a device that is used to protect from electromagnetic radiation. A Faraday cage may be formed by a continuous covering of conductive material, or a mesh of su...
How to Use a Ruler to Measure in Millimeters (Plus Estimating Lengths)
Learn to measure milliliters with rulers and other objects—and how to convert from inches, meters, and other units A millimeter (also spelled “millimetre”) is a unit of length in the metric system—a system of uni...
How to
Read Latitude and Longitude on a Map
Latitude and longitude are measurements of location on the globe. If you know how to read latitude and longitude on a map, you can determine the geographic coordinates of any spot on the map. While online maps make it ea...
How to Write Latitude & Longitude in Degrees, Minutes, Seconds, & Decimals
A guide to writing longitude & latitude in different formats, complete with examplesIf you’ve ever read a map or a globe, you’re probably familiar with latitude and longitude. These coordinates can you help you pinpo...
How to Make a Bottle Rocket at Home
Two different kinds of bottle rocket designs to soar into the sky You’re never too young to be an astronaut! You might not be making a trip to the moon for a few more years, but you can launch your very own rocket righ...
How to
Make a Solar System Model
There are eight known planets orbiting our sun, including Earth. Making a model is a fun introduction to this solar system, and a good art project for primary school science classes. This detailed example can take a few ...
How to
Identify the Stars
There are billions of stars in the night sky, and stargazing is a very popular and enjoyable pastime. Getting started identifying constellations and stars in the sky is easy. Most of the major stars, like Polaris or Alph...
How to Create a School Project on the Layers of the Earth: 3 Fun Ideas
Make a 2-D or 3-D Earth layers diagram that’ll wow your teacherIf you have to make a model of the Earth’s layers (i.e., the crust, upper mantle, lower mantle, liquid outer core, and solid inner core) for a school pro...
How to
Read a Sundial
Sundials have been used to measure time, based on the Sun, for thousands of years. This simple device can be made up of nothing but a flat dial and a gnomon (the “pointer” that casts the shadow), but can still be tri...
How to
Remember the Order of the Planets in Our Solar System
Memorizing the names of all the planets around our sun can be done easily with practice, and without having to learn anything else about them. Using mnemonic devices, repetition, and visual imagery, you can quickly memor...
How to
Make a Diet Coke and Mentos Rocket
Dropping Mentos into a bottle of diet soda causes a physical reaction: as they fall through the soda, the Mentos candies break the bonds between the carbon dioxide and water (the combination that makes soda fizzy), relea...
How to
Create a Potato Battery
Did you ever think that you could use a vegetable as a battery? Batteries produce electricity by passing electrons back and forth between two metal plates What if you didn’t have a battery around, but had a potato? W...
How to
Make a Simple Rocket
Rockets capture the imaginations of adults and children alike. Unfortunately, we often refer to “rocket science” as if it is the most complicated subject on the planet. While some highly advanced rockets are engineer...
How to
Make a Sundial
A sundial is a device that uses the position of the sun to reflect the time. An upright stick, called a gnomon, is positioned to cast a shadow onto a pre-marked sundial face. As the sun moves across the sky, the shadow a...
How to
Make a Tornado in a Bottle
With water, dish soap, and a bit of spinning, you can make a tornado in a bottle! This can be a great way to learn how tornadoes work. For a basic experiment, try making a tornado in a single bottle. If you want to get m...
How to
Make a Model of the Earth
Making a model of the Earth is a fun project for learning about geography, geology, and astronomy. Pick up your paints and get started making the whole world.https://www.education.com/science-fair/article/earth-model/
How to
Determine Latitude and Longitude
Latitude and longitude can be used to determine the exact location of any point on the globe. There are several ways to find your latitude and longitude - some of which require many more resources than others. Find your...
How to
Make a Planet Model
Few science fair projects are as timeless as a planet model, and for good reason. Planet models showcase knowledge about the planet, as well as skill at portraying its physical characteristics and scale. Whether you're c...
The Easiest Way to Round to the Nearest Hundred
Listen to the “talking digit” to quickly round numbersDid you ever see numbers like 473 and 231 and wish you could instantly know about how much they added up to? Rounding numbers gives you a way to do that. Your num...
