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ScienceGrade 2

Why Do We Sleep

Why Do We Sleep

Learning Objective

Students will learn about why we sleep.

Words to Know

REM sleep: The dream stage — eyes dart around under eyelids!; REM sleep is when you dream.
Melatonin: A hormone that makes you sleepy!; Screens make less melatonin.
Circadian rhythm: Your bodys internal clock!; It tells you when to sleep.
Growth hormone: A chemical released during sleep for growing!; You grow most while sleeping!

Check What You Learned

Quick Quiz

1 / 3

What does “REM sleep” mean?

Lesson Info

Grade 2

2026-07-20

Standards Alignment

4-LS1-2
Use a model to describe that animals receive different types of information through their senses, process the information in their brain, and respond to the information in different ways
Health education
importance of sleep for growth and learning

Keywords

2nd grade sciencescience for kidssleeprem sleepmelatonincircadian rhythmgrowth hormone4-LS1-2Health educationkids learningelementary education

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