Tool steel
Some steel is very strong. It is used to make tools. These tools help us cut things. They can also shape metal. This steel helps us build many things. Do you use tools at home?
Early Reader · Change the reading level on the articleTechnology articles — Page 79
Explore inventions, engineering, computing and the tools people build to solve problems. Choose an article below; its reading controls let you move between the available levels.
4,107 public articles · Page 79 of 86
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Toothbrush
A toothbrush cleans your teeth. It has a long handle. It also has soft hair on the end. You use it to stay clean. It helps your smile stay bright. Do you brush your teeth every day?
Early Reader · Change the reading level on the articleToothpick
A toothpick is a tiny stick. It can be made of wood. We use it to clean our teeth. It helps get food out after we eat. It is a very old tool. Do you use one after a meal?
Early Reader · Change the reading level on the articleTopographic Abney level
This tool helps us see hills. It shows how steep a slope is. We can use it to find tree height. It is small and fits in a pocket. It helps people work outside. Do you like to hike on hills?
Early Reader · Change the reading level on the articleTorch
A torch is a stick with fire. It helps people see in the dark. People use them in big parades. They can also be used for shows. A torch can be very bright. Do you like bright lights?
Early Reader · Change the reading level on the articleTor (network)
Some people use a special tool online. It helps hide where you are. It works like layers on an onion. This keeps your secrets safe. It helps many people stay private. Do you like to keep secrets?
Early Reader · Change the reading level on the articleToronto subway
Trains run under the ground in Toronto. They help people get to work. Many people ride these trains every day. It is a very busy way to travel. Do you like to ride trains?
Early Reader · Change the reading level on the articleTorque wrench
This tool helps tighten bolts. It makes sure they are not too loose. It also makes sure they are not too tight. It can even make a click sound! This helps us fix things well. Do you like to help fix things?
Early Reader · Change the reading level on the articleToshiba
Toshiba is a big company. It is from Japan. They make many things. They make tools to help us. They also make things for our homes. It is a very old company. Do you know any Toshiba things?
Early Reader · Change the reading level on the articleTotalEnergies
TotalEnergies is a big company. It finds oil and gas. It also makes green power. This helps people move and live. It is a very large group. Do you see their sign?
Early Reader · Change the reading level on the articleTotal station
A tool helps us build things. It finds the right spots. It tells us how far things are. It helps us make maps. We can use it to build roads. It is very smart. Do you like maps?
Early Reader · Change the reading level on the articleTouchpad
A touchpad is a flat part on a computer. You use your finger to move things on the screen. It helps you click and pick things. It is very useful for you. It is small and easy to use. Do you like using a touchpad?
Early Reader · Change the reading level on the articleToy balloon
A toy balloon is for fun. It can be many shapes. Some are round. Some look like animals. You can fill them with air. They make parties look great! Do you like balloons?
Early Reader · Change the reading level on the articleToyota Corolla
The Corolla is a car. It is made by Toyota. Many people buy this car. It has been around for a long time. People all over the world use it. It helps us get to places. Do you like cars?
Early Reader · Change the reading level on the articleToyota Production System
Toyota makes cars in a smart way. They make only what they need. They do not waste things. This helps them work well. It is a great way to build. Do you like to build things?
Early Reader · Change the reading level on the articleTracer ammunition
Some bullets glow in the dark. They leave a bright trail. This helps people see where they go. It helps them aim better. It is like a tiny light in the sky. Do you see the light?
Early Reader · Change the reading level on the articleTrade magazine
Some books are for work. They tell people about new things. They help workers learn. These books help people do a good job. It is fun to learn. Do you want to learn new things too?
Early Reader · Change the reading level on the articleTrademark
TradeMark is a very tall building. It is in a place called Charlotte. It has many floors for people to live in. It is one of the tallest there. Can you see it from far away?
Early Reader · Change the reading level on the articleTrade show
A trade show is a big meeting. Companies show off new things. They show toys or tools. People go there to see them. This helps businesses grow. It is a busy place! Have you ever seen a big fair?
Early Reader · Change the reading level on the articleTraffic
Traffic is cars and people moving. They move on roads. We use signs to stay safe. Rules help us go in order. This helps everyone get home. Do you see cars on your way to school?
Early Reader · Change the reading level on the articleTraffic congestion
Many cars use the same road. This makes cars go slow. It can make a big jam. This can make drivers feel mad. Have you seen a traffic jam?
Early Reader · Change the reading level on the articleTraffic light
Traffic lights use bright colors. Red means you must stop. Yellow means a change is coming. Green means you can go. They help keep us safe on the road. Do you see them when you ride in a car?
Early Reader · Change the reading level on the articleTraffic sign
Road signs help us travel. They tell us where to go. Some signs use pictures. These help everyone understand. They keep us safe on the road. Do you see signs when you ride in a car?
Early Reader · Change the reading level on the articleTrail blazing
People use marks to find their way. These marks show you the path. You might see paint on a tree. You might see a pile of rocks. These help us stay on the trail. It is good to look for them. Do you see any marks on…
Early Reader · Change the reading level on the articleTrailer (vehicle)
A trailer is a thing with wheels. It does not have its own motor. A car or truck pulls it. It helps us move big things. It can carry a boat or toys. It can even be a home! Do you like to ride in a car?
Early Reader · Change the reading level on the articleTrajan's Bridge
A long time ago, Romans built a bridge. It went over a big river. It was very, very long. It helped soldiers cross the water. It was a great thing to build. [IMAGE:File:Remains of the Trajan's Bridge on the south…
Early Reader · Change the reading level on the articleTrans-African Highway network
Big roads go across Africa. These roads help people trade. They help doctors and police reach you. Some roads are still being built. They help many people live well. Do you like long car rides?
Early Reader · Change the reading level on the articleTrans-Australian Railway
A long train track goes across the desert. It helps people travel far away. The track is very, very straight. It looks like a line in the sand. You can see it from space! Do you like train rides?
Early Reader · Change the reading level on the articleTranscontinental railroad
Trains can travel very far. They go from one side of land to the other. These tracks help move people and things. This makes it easy to visit far places. It helps us stay connected. Can you ride a long train?
Early Reader · Change the reading level on the articleTransducer
Some tools change one kind of power to another. They can turn light into a signal. They can turn sound into a signal, too. This helps machines work. It helps us hear music. Do you use these tools every day?
Early Reader · Change the reading level on the articleTrans-European high-speed rail network
Fast trains run in many places. They go on special tracks. These tracks help trains move fast. This helps people travel. It is a big way to move. Do you like fast trains?
Early Reader · Change the reading level on the articleTrans-European Transport Network
Many places use big paths to travel. These paths are roads and trains. They help people move far away. They also help ships and planes. These paths help us all stay close. Do you like to travel?
Early Reader · Change the reading level on the articleTransform, clipping, and lighting
Computers make 3D pictures. They draw shapes to look real. They add light to the colors. This helps games look good. It makes the world feel big. Do you like video games?
Early Reader · Change the reading level on the articleTransistor radio
Small radios can go anywhere. They fit in your pocket. Old radios were big and heavy. These new ones use tiny parts. Now you can hear music on the go. Do you like to listen to music?
Early Reader · Change the reading level on the articleTransistor–transistor logic
Tiny parts help computers work. They help machines think. These parts make many tools. They are in many things you use. They help us every day. Do you like computers?
Early Reader · Change the reading level on the articleTransit-oriented development
People build towns near trains. These towns have shops and homes close by. You can walk to the bus or train. It helps us use fewer cars. This keeps our world clean. Can you walk to a train station?
Early Reader · Change the reading level on the articleTransjakarta
Big buses travel in Jakarta. They have their own lanes. This helps them move fast. They help many people get around. It is a great way to ride. Do you like riding buses?
Early Reader · Change the reading level on the articleTransmission Control Protocol
The internet helps us talk. It sends messages to our friends. This tool makes sure they arrive. It checks for mistakes too. It helps us read mail online. Does your computer send mail?
Early Reader · Change the reading level on the articleTransmission electron microscopy
This tool sees very tiny things. It uses tiny bits to make a picture. These bits go through a small sample. It can even see tiny dots called atoms. This helps us learn about life. Can you imagine seeing something so…
Early Reader · Change the reading level on the articleTransmission line
Special wires carry signals. These wires move waves. They help us watch TV. They also help computers talk. They keep the waves inside. This is very helpful. Can you find a wire?
Early Reader · Change the reading level on the articleTransmission (mechanical device)
A gearbox helps machines move. It uses gears to change speed. It can make things go fast. It can also make them strong. This helps cars and bikes run well. It is very useful! Can you see gears on a bike?
Early Reader · Change the reading level on the articleTransmission system operator
{ "text": Some groups move power to you. They use big lines to carry it. They also move gas through pipes. This helps keep your lights on. It keeps us safe too. Do you use lights at home?", "media": [ "File:Retail…
Early Reader · Change the reading level on the articleTransmission tower
Tall towers hold up power lines. They carry power to your home. These towers are made of strong steel. They help us use lights and tools. It is a big job! Can you see a tower near you?
Early Reader · Change the reading level on the articleTransmitter
A transmitter sends signals through the air. It helps us talk to people far away. It works with an antenna. This helps your cell phone work. It is very helpful to us. Do you use a radio?
Early Reader · Change the reading level on the articleTrans-Mongolian Railway
A long train track goes through Mongolia. It connects Russia and China. The trains carry many things. They also carry people. This helps many towns. It is a very big trip. Would you like to ride the train?
Early Reader · Change the reading level on the articleTransparency (human–computer interaction)
Computers can hide how they work. They do this to help us. You can use them easily. You do not see the hard parts. This makes using them fun. Does your computer hide things?
Early Reader · Change the reading level on the articleTransportation engineering
People build ways to move. These ways help us travel. They include roads and tracks. They help cars and trains move safely. We use them every day. How do you get to school?
Early Reader · Change the reading level on the articleTransportation planning
People plan how we move. They plan for cars and buses. They also plan for bikes. This helps us get to new places. It keeps our world safe. How do you get to school?
Early Reader · Change the reading level on the article