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Computer ScienceKindergarten· U.S. National — Common Core & NGSS
Aligned to:U.S. educational frameworks

Computers Then and Now

Students compare older tools with modern computers and discuss how computing technology has changed the ways people work, learn, and communicate.

Computers Then and Now

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Meet Tools from the Past

Long ago, people used tools that did many jobs we still do today. A typewriter put letters on paper when someone pressed its keys. It could not easily erase, save, or send the words. A corded telephone let people talk from different places, but it stayed connected to a wall. A paper map helped travelers find roads. People also used books and library card drawers to find facts. For example, a child who wanted to learn about whales might ask a librarian, look through cards, and then find a book on a shelf. These tools were useful for their time. Studying them helps us notice what people needed: ways to write, talk, travel, and learn.

A child explores a typewriter, wall phone, folded road map, and card drawers in an old library.
A child explores a typewriter, wall phone, folded road map, and card drawers in an old library.Source: Illustrated for this lesson

Explore Modern Computer Tools

Today, many tools contain computers. A desktop computer may have a screen, keyboard, and mouse. A laptop folds and can be carried. A tablet has a touchscreen. A smartphone is a small phone that can also run computer programs. These devices follow instructions called programs. They can store words and pictures, play sounds, and connect to other computers. For example, a student can use a tablet to hear a story, view a picture of a whale, and draw a whale on the screen. Different computer tools have different sizes and parts, but they can do many similar jobs. Children should use connected devices with a trusted adult and follow classroom or family safety rules.

A child and trusted adult explore four modern computer devices while a tablet shows a whale story and drawing.
A child and trusted adult explore four modern computer devices while a tablet shows a whale story and drawing.Source: Illustrated for this lesson

Match Tools That Do Similar Jobs

Older and newer tools can do similar jobs in different ways. A typewriter and a laptop both help people write. A paper map and a map program both help people find places. A mailed letter and an email both carry messages. A printed encyclopedia and a trusted website can both provide information. To make a match, first ask, “What job does this tool do?” For example, imagine that Maya wants to send news to her uncle. In the past, she might write a letter, place it in an envelope, and mail it. Today, with an adult’s help, she might type and send an email. The tools are different, but Maya’s goal is the same: sharing a message with someone far away.

Three clear pairs connect old and new tools that perform the same writing, navigation, and messaging jobs.
Three clear pairs connect old and new tools that perform the same writing, navigation, and messaging jobs.Source: Illustrated for this lesson

Compare Past and Present

Comparing means noticing what is the same and what is different. In the past, finding information could take more time. A person might visit a library, search through cards, and read several books. Today, a computer can help a person search many sources quickly. Both ways still require careful reading and good questions. Computers can also save work, copy it, and send it to another place. Older tools often worked without the internet or electricity, so they can still be useful. For example, a class in the past might use books and a paper poster to report on frogs. A class today might use books, a safe website, and a slide show. Both classes gather facts and share what they learned, but their tools are different.

Two classrooms side by side show a past frog report on paper and a present frog report on a computer.
Two classrooms side by side show a past frog report on paper and a present frog report on a computer.Source: Illustrated for this lesson

Share How Computers Help People

Computers can help people work, learn, and communicate. Workers may use computers to make plans, count supplies, or design buildings. Students may use them to practice letters, watch a science demonstration, or create a picture. Families may send messages or make video calls. Think about a situation someone wants to improve. Suppose Leo’s grandmother lives far away, and Leo wants to see her while they talk. A corded telephone lets them hear each other, but a tablet with a video call can let them hear and see each other. The improved tool helps solve Leo’s problem. Computers do not make every choice for people. People decide which tool fits the job, use it kindly, and ask a trusted adult for help when needed.

Leo compares a wall phone with a tablet video call while a trusted adult helps him talk to his grandmother.
Leo compares a wall phone with a tablet video call while a trusted adult helps him talk to his grandmother.Source: Illustrated for this lesson