Growing Takes Fuel: teacher key

How You Grow, grade 3 edition, written for 3rd grade. Growing takes food, sleep and play. Find out what bones, calcium and deep sleep have to do with it.

Read the book. Print this page for the key.

Questions and answers

1. What do doctors use to follow how a child grows?
   • A growth chart (answer)
   • A map
   • A clock
2. What helps the body take in calcium from food?
   • Salt
   • Vitamin D (answer)
   • Cartilage
3. Which type of sleep is hard to wake from?
   • Light sleep
   • A short nap
   • Deep sleep (answer)
4. What are growth spurts?
   • Faster stretches of growing (answer)
   • Times when bones break
   • Foods with calcium
5. Why is deep sleep important for kids?
   • The body releases hormones that kids need to grow (answer)
   • It makes light sleep longer
   • It makes the bed softer

Words

• calcium: bone-building mineral
• hormones: body messengers
• spurts: quick bursts
• protein: body-building food
• mineral: a rock-like nutrient