
Morse code is a way to communicate. The code was invented by Samuel Morse. Morse code uses symbols. The symbols are dots and dashes. Each letter of the alphabet is a combination of dots and dashes.
Photo Credit: Ioana Martalogu/Alamy Stock Photo
Big and small, spider webs are everywhere. Spiders weave webs … read more
This year, school looks different. Why are people wearing masks? … read more
The world has many exciting places. Where on Earth is … read more
© 2025 McGraw-Hill Education. All Rights Reserved.