R is for ...

rabbit A rabbit is a small, cute mammal with big ears.	raccoon The raccoon is a mammal with mask-like markings on its face and a ringed tail.	racket A racket is used to hit a ball or shuttlecock in sports like tennis and badminton.	radar Radar is a device that uses reflected radio waves to located objects at a distance. Radar is short for "radio detection and ranging."	radio A radio lets you hear broadcast music and talk shows.
radish A radish is a sharp-tasting vegetable that grows underground.	radius The radius is the distance from the center of a circle (or a sphere) to the edge.	railroad tracks Trains run along railroad tracks.	rain Rain is water that falls from clouds. Rain is measured using a rain gauge.	rainbow A rainbow appears when sunlight passes through bits of water in the air. The white light is broken up into many colors.
rainbow lorikeet A small, colorful, brush-tongued parrot from Australia.	raincoat A raincoat keeps you dry when it rains.	rain forest A rain forest is a wet tropical environment teeming with plants and animals.	rainstick A rainstick is a ceremonial musical instrument used to invoke the rain spirits. In Chile, rainsticks are traditionally made from dead cactus tubes with hundreds of cactus spines hammered into the tube. Tiny lava pebbles cascade gently through the tube, sounding much like rain.	raisin Raisins are dried grapes.
rake A rake is a garden tool that helps gather grass and leaves.	raspberry Raspberries are a type of edible berry that grows on a prickly vine.	rat A rat is a rodent with a long tail and a pointed snout.	1/2 ratio A ratio is the relationship between two numbers.	rattle A rattle makes noise when you shake it.
rattlesnake Rattlesnakes are poisonous snakes that have a rattle at the end of their tail.	ray A ray is a flat fish that is related to the sharks. Many have a long tail that stings.	read People read newspapers, books, magazines, the internet, and other things.	recipe A recipe is a set of instructions for making a type of food.	recorder A recorder is a small wind instrument.
rectangle A rectangle is a four-sided figure whose sides are at right angles to each other.	recycle When items are recycled, they are re-used. For example, used paper can be recycled into new paper.	red Red is the first color in the rainbow.	red-eyed tree frog The red-eyed tree frog is a rain forest frog with bright red eyes.	red panda Red Pandas are bear-like mammals from mountains in Asia.
red wolf Red wolves are endangered meat-eaters from the eastern USA.	redwood The redwood is the tallest tree, growing up to 360 feet tall.	reef Reefs are warm, clear, shallow ocean habitats that are rich in life.	refrigerator A refrigerator is a machine that keeps food cold.	reindeer Reindeer live in the far north.
remainder The remainder is the fractional part of the answer in long division. The dividend divided by the divisor is the quotient plus the remainder.	remote control A remote control lets you operate a machine from far away.	reptile Reptiles are a group of scaly, egg-laying animals. Lizards, snakes, turtles and dinosaurs are reptiles.	Revere, Paul Paul Revere was a silversmith who warned American partiots that the British were coming as the American Revolution began.	rhea The rhea is a large, flightless bird from South America.
rhinoceros A rhinoceros is a huge animal that has one or two horn-like spikes on its head. This mammal is also called a rhino.	Rhode Island Rhode Island is a state in the eastern United States of America. Its capital is Providence.	rhombus A rhombus is a parallelogram with equal-length sides.	rhyme Words that rhyme have endings that sound the same, like cat and hat, or kite and light.

ribbon You can tie a bow in a ribbon to decorate something.

rice Rice is a food. It is a grain that grows in warm, wet soil. Rice is an important food in much of Asia.

ride When you take a ride, you travel on something else, like a bicycle, a horse, or other means of transportation.

? riddle A riddle is a question that is a puzzle or a joke.

right Right is the opposite of left.

right angle A right angle looks like the corner of a square; it extends ninety degrees.

right triangle A right triangle has one angle that is a right angle (extending 90 degrees).

right whale Right whales are baleen whales with a huge head and an arched mouth. They were almost hunted to extinction.

ring A ring is a piece of jewelry that goes on your finger.

river A river is a large, flowing body of water that usually empties into a sea or ocean.

river otter River otters are aquatic mammals from North America that have a streamlined shape.

roach A roach is a type of insect. It has six legs and white blood.

road A road is a wide path made for travelling.

roadrunner The roadrunner is a bird is a fast running bird that rarely flies.

robin The robin is a common bird with red-colored feathers on its breast.

robot A robot is a mechanical worker.

rock A rock is a hard mineral, also called a stone. The Earth's crust is made of rock.

rocket A rocket is a machine that propels itself into space.

rockhopper penguin The rockhopper penguin is a small, aggressive, crested bird that cannot fly.

rocking horse Children can rock on a rocking horse.

rodent Rodents are mammals whose two front teeth continue to grow throughout their lives. Rats, mice, beavers, squirrels, hamsters, and gerbils are rodents.

roll A roll is a small piece of baked dough.

roll Many items, like paper towels, come on a roll.

roller skate When you wear roller skates, you can roll along the ground.

rolling pin A rolling pin is used to roll out dough.

Roman numerals Thousands of years ago, in ancient Rome, the Romans used a system of numbers that we call Roman numerals. In this system, I=1. V=5, X=10, L=50, C=100, D=500, and M=1,000.

roof The roof is the top covering of a building.

room A room is a part of a building that is separated off by walls.

rooster A rooster is a male chicken.

roots The roots are the parts of a plant that gets water and other nutrients from the soil. Roots also store energy and provide support for the plant. Most roots grow underground.

rope A rope is useful for tying things together or playing jump rope.

rose The rose is a beautiful flower with a sweet scent.

Rottweiler The Rottweiler is a powerful, muscular, determined dog that was originally bred in Germany to guard and herd cattle.

round Round things are curved. A circle is round.

rowboat A rowboat is a small boat that is propelled by oars that a person moves.

rubber band A rubber band is a very stretchy circular ribbon of rubber. Rubber bands are often used to hold things together.

ruby A ruby is a hard, shiny, red jewel.

rug A rug is a floor covering made of woven yarn or thick fabric.

ruler A ruler is a straight piece of material that is used for measuring distances or drawing straight lines.

run Running is faster than walking.

Russia Russia is the biggest country in the world; it is in both Europe and Asia. Russia's capital is Moscow.

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