Level 1
Level 2
Level 3
Level 4
Level 5
100

Antibiotic

A type of medicine that fights harmful germs in your body.

100

Illness

Another word for sickness.

100

Survive

To stay alive, even when things are hard.

100

Emotion

A feeling, like happiness, sadness, or anger.

100

Positive

Feeling good, hopeful, or sure about something.

200

Bacteria

Tiny living things, so small you need a microscope to see them. Some are good, some can make you sick.

200

Comfortable

Feeling relaxed, safe, and at ease.

200

Invade

T


To enter a place where you don’t belong, like germs invading the body.



200

Rest

To take a break so your body and mind can recover energy.

200

Theory


An idea that explains how or why something happens, based on facts.



300

Cell

The smallest building block that makes up all living things.

300

Disease

A sickness that stops your body from working the way it should.

300

Vaccination

A shot that helps your body learn how to fight off certain diseases.

300

Virus


A tiny germ that can make you sick, even smaller than bacteria.



300

Structure

The way something is built or put together.

400

Digest

To break down food in your body so it can give you energy.

400

Immune system

The part of your body that fights off germs and keeps you healthy.

400

Infection

When harmful germs get inside your body and start to grow.

400

Protect

To keep something safe from harm.

400

Treat

To try to make someone feel better from being sick or hurt.

500

Adolescent

A person who is growing from a child into a teenager.

500

Researcher

A person who studies and learns new things about the world.

500

Symptom

A sign that shows you might be sick, like a cough or fever.

500

Brain

The organ in your head that controls your thoughts, feelings, and actions.

500

Sore

A painful or tender spot on your body.

M
e
n
u