Hello Readers, Writers, Teachers, and Children! I’d like to introduce a new series of educational articles that I call Historical Geographic. In this series, we
What is an Atom? The Elements – Helium What is Lithium? Lithium is the third element on the periodic table. It has 3 protons, 3
Prehistoric Times The Archean (ar-KEE-uhn) Period started about 4 billion years ago and lasted until about 2.5 billion years ago. That’s a looooooooot of zeroes!
Hello Reader, Writers, Teachers, and Children! Our earth is somewhere around 4.5 billion years old. And living things have existed on it for maybe 3.5
What is an Atom? The Elements – Hydrogen What is Helium? Helium is the second element on the periodic table, and the second lightest element
What is an Atom? What is Hydrogen? Hydrogen is the very first element on the periodic table. It’s made up of just one proton and