The Science Literacy Bundle 5 consists of fourteen (12) readers with Lexile scores 520L-540L. Reading Level Grade 3- 4. Whales & Birds are currently out of stock 
 
Reptiles are animals that have skin covered in scales. They keep their body the right temperature by lying in the sun or in the shade. Most lay eggs, while other give birth to live babies.  Turtles, snakes, alligators, crocodiles, and lizards are all reptiles.
 
In Heat, young readers are introduced to the concept of heat. Heat is a form of energy and is caused by the movement of atoms and molecules. The faster they move the more heat is created. Heat changes water from ice to liquid to steam. Atoms and molecules are described.
 
In Rubber Rain Boots and Plastic Pink Flamingos, young readers are introduced to polymers. A polymer is a molecule made of many repeating units.
 
In The Shape of Earth, young readers are prompted to think about the shape of Earth.  They learn why Earth seems flat when it is actually ball-shaped.
 
A Star is an object in space that emits heat and light energy when hydrogen atoms combine to make helium. Stars are different sizes and give out different amounts of light. Several significant stars are described.
 
In The Moon, young readers learn the Moon is spherical, much smaller than Earth, made of rocks and minerals, has little air, has ice but no liquid water, and has gravity. It reflects light from the Sun and looks different from day to day. The surface has craters and lava flows.
 
Sharks are fish, animals that live and swim in water. Their skeleton is made of light and flexible cartilage. Sharks range in size from very small to huge, and some lay eggs while others have live births. Sharks don’t hunt humans but some will bite people.
 
Galaxies: A galaxy is a huge group of stars, planets, gas, comets, asteroids, and other objects in space. Our Sun and Earth are part of the Milky Way Galaxy. Telescopes are used to study galaxies.  Spiral, elliptical, and irregular galaxies are described.
 
The Sun is a star, an object in space that makes its own light and heat energy when helium and hydrogen atoms undergo nuclear reactions. The Sun’s energy makes life possible on Earth by providing warmth and light for plants to use to make food.
 
In Minerals, young readers are introduced to basic information how Minerals form from molten magma. When magma cools slowly, molecules can line up in an orderly way to make minerals. Minerals can form crystals, with each mineral having crystals of a specific shape. They can be different colors depending on the atoms included. Atoms and molecules are defined.
 
In The Biosphere, young readers learn the biosphere is made up of all the living things on Earth and the land, water, and air where living things exist. Each type of plant and animal lives in a place that provides what it needs to grow and survive. Environment and habitat are defined.
 
In Plant Cells vs. Animal Cells, young readers learn that plants and animals have different types of cells. Both types have a cell membrane and organelles, including a nucleus, ribosomes, and mitochondria. Some differences: plant cells have a stiff outer cell wall and make food from sunlight; animal cells don’t have a cell wall and can’t make their own food.