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## ERA OF THE DINOSAURS

Geological timescaleTriassic period: 250&#8211;200 million years agoJurassic period: 200&#8211;145 million years agoCretaceous period: 145&#8211;65 million years agoDinosaurs roamed the planet for a…

## Common

Name at birth: Lonnie Rashid Lynn, Jr.Common is the stage name of Lonnie Rashid Lynn, Jr., a Grammy-winning rapper who won an Oscar for co-writing "Glory" for the 2014 film Selma. He grew up in Chica…

## Weather: The Modern Era

The Modern EraWeatherRadar and SatellitesRadar&#8212;Scanning the SkiesDoppler&#8212;the New GenerationSatellites&#8212;a Far-Out LookThe Modern EraPutting It All Together Satellites are capa…

## The Dawn of an Electronic Era

The computer age began when ENIAC (Electronic Numerical Integrator and Calculator) was completed in 1945. The first multipurpose computer, ENIAC set speed records with an amazing 5,000 additions pe…

## Common Factors

Factors that two numbers have in common are called the common factors of those numbers. Example: What are the common factors of 20 and 25?&nbsp;&nbsp;T…

## Common Core

The debate intensifies over standards in education &nbsp; Related Links Common Core State Standards Initiative New Evaluations Are Raising the Stakes for Teachers School D…

## The Common Cold

Source: National Institute of Allergy and Infectious Diseases, National Institutes of Health. The problem. In the course of a year, individuals in the United States suffer one billion colds, accordi…

## Find Common Denominators

In this video, Jada learns who to compare fractions using common denominators.

## Lowest Common Multiples

Common multiples are multiples that two numbers have in common. These can be useful when working with fractions and ratios.Example:What are some common multiples of 2 and 3?&nbsp;&nbsp;Multiples of…

## Most common blood type

The Question: What's the most common blood type? The Answer: In the United States, 37% of the population has type O+ blood, making it the most c…