Endocrine System
What Is the Endocrine System? The endocrine system is made up of glands
Brain and Nervous System
What Does the Brain Do? The brain controls what you think and feel, how you
Digestive System
What Is the Digestive System? Food is our fuel, and its nutrients give our bodies’
What Is Collagen?
Collagen (KOL-uh-jin) is a protein in the body. Different types of collagen are in many
Body Mass Index (BMI)
What Is BMI? Body mass index (BMI) is a calculation that uses height and
Growth Plates
What Is a Growth Plate? Growth plates are the areas of new bone growth in
Growth Charts
What Are Growth Charts? Kids grow at their own pace. Big, small, tall, short —
Ways to Build Strong Bones
It’s easy to take our bones for granted. After all, they do all their work behind the
Is Your Child Old Enough to Stay Home Alone?
Letting an older child stay home while you run a quick errand or even for