Unit 1
Whales are animals. They are the biggest animals.
Whales are animals which are the biggest animals.
Electricity is something useful. It is needed for computers, TVs, cars, and many things.
Electricity is something useful which is needed for computers, TVs, cars, and many things.
A screen is something we have in our home. We use it to watch movies, TV, and play video games.
A screen is something we have in our home which we use to watch movies, TV, and play video games.
Friction is something that slows things. It happens when two things rub together.
Friction is something that slows things which happens when two things rub together.
Pollution is something bad. We need to clean it.
Pollution is something bad which we need to clean.
Inventions are useful things. We use them to solve problems.
Inventions are useful things which we use to solve problems.
Coins are something we collect. We also use them to buy things.
Coins are something we collect which we also use to buy things.
A swing is something fun. We use them to play.
A swing is something fun which we use to play.
Squids have ten arms. They use them to...
Squids have ten arms which they use to...
An airplane is something that was invented in 1903. We use it to...
An airplane is something that was invented in 1903, which we use to...
A stuffed animal is a toy. It is very...
A stuffed animal is a toy which is very...
Balance is an important thing. It helps us...
Balance is an important thing which helps us...
Sea turtles are animals...
Sea turtles are animals which...
A wheel is a useful invention...
A wheel is a useful invention which...
A dinosaur is an animal...
A dinosaur is an animal which...
Gravity is a strong force...
Gravity is a strong force which...